fix(windows): defer missing tray task during trust reset

.dockerignore

@@ -0,0 +1,12 @@
+# MinerOps repository-root Docker build context
+.git
+.env
+.env.*
+!.env.example
+!.env.dev.example
+**/__pycache__/
+**/*.pyc
+**/*.pyo
+**/*.dump
+**/*.sql.gz
+backend/app/main.py.bak*

agents/windows/.gitattributes

@@ -0,0 +1,4 @@
+*.ps1 -text
+
+
+*.ps1 whitespace=cr-at-eol

agents/windows/.gitignore

@@ -0,0 +1,8 @@
+agent-config.json
+agent-state.json
+logs/
+*.bak
+*.bak.*
+*-probe-*.json
+rollback/
+

agents/windows/BASELINE_SHA256SUMS

@@ -0,0 +1,8 @@
+d10c355772381fb0a3953bb8cf3af247be21659a7eee4c489438d30f8bdd2da8  EnrichOneMiner.ps1
+ef56e1eca40aa838ff1e3826cdba33dc948064b8d685c6d1d4c365b049984d4e  MinerOpsAgentGUI.ps1
+51fbcec81331ae9b171783b55f589f7c3d4d0e872ae66611b918703ef2b8725d  MinerOpsAgentService.ps1
+bee0f9925e5ace27d8d7207d12af0ab7e5cab6b2a655654fca0ecf7dd71d7380  MinerOpsAgentTray.ps1
+c68ad90566be4ff5b18142048cdc5186d6c71c900f45e5d15d07ef4ecfc25317  MinerOpsApi3EnrichmentPoller.ps1
+90e4bbe7b1fc6467fc37da7c4e67adc01e74f332e9a2d14d1961f1488a984894  MinerOpsPoolPoller.ps1
+18b36f45b966d1ff0c0cd008bb25567204e1cb90839b825e80671f1c2071d3e5  MinerOpsPoolPollerTask.ps1
+

agents/windows/EnrichOneMiner.ps1

@@ -0,0 +1,251 @@
+param(
+    [Parameter(Mandatory=$true)]
+    [string]$IpAddress,
+
+    [string]$MinerId = ""
+)
+
+$ConfigPath = "C:\MinerOpsAgent\agent-config.json"
+
+function Read-AgentConfig {
+    if (!(Test-Path $ConfigPath)) {
+        throw "Agent config not found: $ConfigPath"
+    }
+
+    return Get-Content $ConfigPath -Raw | ConvertFrom-Json
+}
+
+function Invoke-MinerCommandRaw {
+    param(
+        [string]$IpAddress,
+        [string]$Command,
+        [int]$Port = 4028,
+        [int]$TimeoutMs = 2500
+    )
+
+    $client = $null
+
+    try {
+        $client = New-Object System.Net.Sockets.TcpClient
+        $async = $client.BeginConnect($IpAddress, $Port, $null, $null)
+
+        if (-not $async.AsyncWaitHandle.WaitOne($TimeoutMs)) {
+            return ""
+        }
+
+        $client.EndConnect($async)
+        $client.ReceiveTimeout = $TimeoutMs
+        $client.SendTimeout = $TimeoutMs
+
+        $stream = $client.GetStream()
+        $payload = [System.Text.Encoding]::ASCII.GetBytes("{`"cmd`":`"$Command`"}`n")
+        $stream.Write($payload, 0, $payload.Length)
+
+        try {
+            $client.Client.Shutdown([System.Net.Sockets.SocketShutdown]::Send)
+        } catch {
+        }
+
+        $buffer = New-Object byte[] 262144
+        $chunks = New-Object System.Collections.ArrayList
+        $started = Get-Date
+
+        while (((Get-Date) - $started).TotalMilliseconds -lt $TimeoutMs) {
+            if (-not $stream.DataAvailable) {
+                Start-Sleep -Milliseconds 20
+                continue
+            }
+
+            $read = $stream.Read($buffer, 0, $buffer.Length)
+
+            if ($read -le 0) {
+                break
+            }
+
+            for ($i = 0; $i -lt $read; $i++) {
+                [void]$chunks.Add([byte]$buffer[$i])
+            }
+
+            if ($chunks.Count -gt 2097152) {
+                break
+            }
+        }
+
+        return [System.Text.Encoding]::UTF8.GetString([byte[]]$chunks.ToArray([byte])).Trim()
+    } catch {
+        return ""
+    } finally {
+        if ($client -ne $null) {
+            $client.Close()
+        }
+    }
+}
+
+function Try-ParseJson {
+    param([string]$Raw)
+
+    if (!$Raw -or $Raw.Trim().Length -eq 0) {
+        return $null
+    }
+
+    try {
+        return $Raw | ConvertFrom-Json
+    } catch {
+        return $null
+    }
+}
+
+function Find-FirstValue {
+    param(
+        [object]$Object,
+        [string[]]$Names
+    )
+
+    if ($null -eq $Object) {
+        return ""
+    }
+
+    $json = $Object | ConvertTo-Json -Depth 80 -Compress
+
+    foreach ($name in $Names) {
+        $escaped = [regex]::Escape($name)
+
+        $pattern = '"' + $escaped + '"\s*:\s*"([^"]+)"'
+        $m = [regex]::Match($json, $pattern, [System.Text.RegularExpressions.RegexOptions]::IgnoreCase)
+        if ($m.Success) {
+            return $m.Groups[1].Value
+        }
+
+        $pattern2 = '"' + $escaped + '"\s*:\s*([0-9A-Za-z\.\-_:]+)'
+        $m2 = [regex]::Match($json, $pattern2, [System.Text.RegularExpressions.RegexOptions]::IgnoreCase)
+        if ($m2.Success) {
+            return $m2.Groups[1].Value
+        }
+    }
+
+    return ""
+}
+
+function Find-MacAddress {
+    param([string]$Text)
+
+    if (!$Text) {
+        return ""
+    }
+
+    $m = [regex]::Match($Text, '([0-9A-Fa-f]{2}[:-]){5}[0-9A-Fa-f]{2}')
+    if ($m.Success) {
+        return $m.Value.Replace("-", ":").ToUpper()
+    }
+
+    return ""
+}
+
+$config = Read-AgentConfig
+$hubUrl = ([string]$config.hub_url).TrimEnd("/")
+$secret = [string]$config.agent_secret
+$agentId = [string]$config.agent_id
+
+$commands = @(
+    "summary",
+    "devs",
+    "edevs",
+    "stats",
+    "pools",
+    "devdetails",
+    "version",
+    "get_version",
+    "get_miner_info"
+)
+
+$raws = [ordered]@{}
+$parsed = [ordered]@{}
+
+foreach ($cmd in $commands) {
+    Write-Host "Querying $IpAddress command: $cmd"
+    $raw = Invoke-MinerCommandRaw -IpAddress $IpAddress -Command $cmd -TimeoutMs 2500
+    $raws[$cmd] = $raw
+    $parsed[$cmd] = Try-ParseJson -Raw $raw
+    Write-Host "  bytes: $($raw.Length)"
+}
+
+$allText = ($raws.GetEnumerator() | ForEach-Object { $_.Value }) -join "`n"
+$allParsed = [ordered]@{
+    summary = $parsed["summary"]
+    devs = $parsed["devs"]
+    edevs = $parsed["edevs"]
+    stats = $parsed["stats"]
+    pools = $parsed["pools"]
+    devdetails = $parsed["devdetails"]
+    version = $parsed["version"]
+    get_version = $parsed["get_version"]
+    get_miner_info = $parsed["get_miner_info"]
+}
+
+$mac = Find-FirstValue -Object $allParsed -Names @("MAC", "Mac", "mac", "macaddr", "mac_address", "Net MAC", "ethaddr", "Ethernet MAC")
+if (!$mac) {
+    $mac = Find-MacAddress -Text $allText
+}
+
+$hostname = Find-FirstValue -Object $allParsed -Names @("Hostname", "hostname", "host", "Host")
+$minerSn = Find-FirstValue -Object $allParsed -Names @("Miner SN", "miner_sn", "miner sn", "Serial", "serial", "SN", "sn", "M_Serial")
+$firmware = Find-FirstValue -Object $allParsed -Names @("Firmware", "firmware", "firmware_version", "Soft Version", "Version", "CompileTime")
+$apiVersion = Find-FirstValue -Object $allParsed -Names @("API", "api", "api_version", "Api Version")
+$platform = Find-FirstValue -Object $allParsed -Names @("Platform", "platform", "Machine", "machine")
+$model = Find-FirstValue -Object $allParsed -Names @("Model", "model", "Miner Type", "miner_type", "Type", "type")
+
+if (!$model) {
+    $model = "WhatsMiner"
+}
+
+$payload = [ordered]@{
+    ip_address = $IpAddress
+    miner_id = $MinerId
+    mac_address = $mac
+    hostname = $hostname
+    miner_sn = $minerSn
+    model = $model
+    miner_type = $model
+    api_version = $apiVersion
+    firmware_version = $firmware
+    platform = $platform
+    raw_version = @{
+        version = $raws["version"]
+        get_version = $raws["get_version"]
+    }
+    raw_miner_info = @{
+        devs = $raws["devs"]
+        edevs = $raws["edevs"]
+        stats = $raws["stats"]
+        pools = $raws["pools"]
+        devdetails = $raws["devdetails"]
+        get_miner_info = $raws["get_miner_info"]
+    }
+}
+
+Write-Host ""
+Write-Host "Detected:"
+Write-Host "  MAC:      $mac"
+Write-Host "  Hostname: $hostname"
+Write-Host "  SN:       $minerSn"
+Write-Host "  Model:    $model"
+Write-Host "  Firmware: $firmware"
+Write-Host "  API:      $apiVersion"
+Write-Host "  Platform: $platform"
+Write-Host ""
+
+$response = Invoke-RestMethod `
+    -Method Post `
+    -Uri "$hubUrl/api/agent/miner-enrichment-v3" `
+    -Headers @{
+        "X-MinerOps-Agent-ID" = $agentId
+        "X-MinerOps-Agent-Secret" = $secret
+    } `
+    -ContentType "application/json" `
+    -Body ($payload | ConvertTo-Json -Depth 80)
+
+$response | ConvertTo-Json -Depth 20
+
+
+
+

agents/windows/MinerOpsAgentGUI.ps1

@@ -0,0 +1,228 @@
+Add-Type -AssemblyName System.Windows.Forms
+Add-Type -AssemblyName System.Drawing
+
+$BaseDir = "C:\MinerOpsAgent"
+$ConfigPath = Join-Path $BaseDir "agent-config.json"
+$StatePath = Join-Path $BaseDir "agent-state.json"
+$LogPath = Join-Path $BaseDir "logs\agent.log"
+$TaskName = "MinerOpsAgent"
+
+function Read-Config {
+    if (Test-Path $ConfigPath) {
+        return Get-Content $ConfigPath -Raw | ConvertFrom-Json
+    }
+    return $null
+}
+
+function Read-ConfigText {
+    if (Test-Path $ConfigPath) {
+        return Get-Content $ConfigPath -Raw
+    }
+    return ""
+}
+
+function Save-ConfigObject {
+    param([object]$Config)
+    $Config | ConvertTo-Json -Depth 10 | Set-Content -Path $ConfigPath -Encoding UTF8
+}
+
+function Save-ConfigText {
+    param([string]$Text)
+    $Text | Set-Content -Path $ConfigPath -Encoding UTF8
+}
+
+function Get-AgentTaskText {
+    $task = Get-ScheduledTask -TaskName $TaskName -ErrorAction SilentlyContinue
+    if (!$task) { return "Scheduled task not installed" }
+
+    $info = Get-ScheduledTaskInfo -TaskName $TaskName -ErrorAction SilentlyContinue
+    return "$($task.State) | Last result: $($info.LastTaskResult) | Last run: $($info.LastRunTime)"
+}
+
+$form = New-Object System.Windows.Forms.Form
+$form.Text = "MinerOps Agent"
+$form.Size = New-Object System.Drawing.Size(950, 780)
+$form.StartPosition = "CenterScreen"
+
+$statusLabel = New-Object System.Windows.Forms.Label
+$statusLabel.Location = New-Object System.Drawing.Point(15, 15)
+$statusLabel.Size = New-Object System.Drawing.Size(900, 24)
+$statusLabel.Text = "Task: " + (Get-AgentTaskText)
+$form.Controls.Add($statusLabel)
+
+$startButton = New-Object System.Windows.Forms.Button
+$startButton.Text = "Start"
+$startButton.Location = New-Object System.Drawing.Point(15, 45)
+$startButton.Size = New-Object System.Drawing.Size(100, 32)
+$form.Controls.Add($startButton)
+
+$stopButton = New-Object System.Windows.Forms.Button
+$stopButton.Text = "Stop"
+$stopButton.Location = New-Object System.Drawing.Point(125, 45)
+$stopButton.Size = New-Object System.Drawing.Size(100, 32)
+$form.Controls.Add($stopButton)
+
+$restartButton = New-Object System.Windows.Forms.Button
+$restartButton.Text = "Restart"
+$restartButton.Location = New-Object System.Drawing.Point(235, 45)
+$restartButton.Size = New-Object System.Drawing.Size(100, 32)
+$form.Controls.Add($restartButton)
+
+$testButton = New-Object System.Windows.Forms.Button
+$testButton.Text = "Test Hub"
+$testButton.Location = New-Object System.Drawing.Point(345, 45)
+$testButton.Size = New-Object System.Drawing.Size(100, 32)
+$form.Controls.Add($testButton)
+
+$saveButton = New-Object System.Windows.Forms.Button
+$saveButton.Text = "Save Config"
+$saveButton.Location = New-Object System.Drawing.Point(455, 45)
+$saveButton.Size = New-Object System.Drawing.Size(120, 32)
+$form.Controls.Add($saveButton)
+
+$secretLabel = New-Object System.Windows.Forms.Label
+$secretLabel.Text = "Agent Secret:"
+$secretLabel.Location = New-Object System.Drawing.Point(15, 90)
+$secretLabel.Size = New-Object System.Drawing.Size(100, 22)
+$form.Controls.Add($secretLabel)
+
+$secretBox = New-Object System.Windows.Forms.TextBox
+$secretBox.Location = New-Object System.Drawing.Point(115, 87)
+$secretBox.Size = New-Object System.Drawing.Size(570, 24)
+$secretBox.UseSystemPasswordChar = $true
+$form.Controls.Add($secretBox)
+
+$showSecretCheck = New-Object System.Windows.Forms.CheckBox
+$showSecretCheck.Text = "Show"
+$showSecretCheck.Location = New-Object System.Drawing.Point(695, 88)
+$showSecretCheck.Size = New-Object System.Drawing.Size(70, 24)
+$form.Controls.Add($showSecretCheck)
+
+$saveSecretButton = New-Object System.Windows.Forms.Button
+$saveSecretButton.Text = "Save Secret"
+$saveSecretButton.Location = New-Object System.Drawing.Point(775, 84)
+$saveSecretButton.Size = New-Object System.Drawing.Size(120, 30)
+$form.Controls.Add($saveSecretButton)
+
+$configBox = New-Object System.Windows.Forms.TextBox
+$configBox.Location = New-Object System.Drawing.Point(15, 125)
+$configBox.Size = New-Object System.Drawing.Size(900, 350)
+$configBox.Multiline = $true
+$configBox.ScrollBars = "Both"
+$configBox.Font = New-Object System.Drawing.Font("Consolas", 10)
+$configBox.Text = Read-ConfigText
+$form.Controls.Add($configBox)
+
+$stateBox = New-Object System.Windows.Forms.TextBox
+$stateBox.Location = New-Object System.Drawing.Point(15, 490)
+$stateBox.Size = New-Object System.Drawing.Size(900, 85)
+$stateBox.Multiline = $true
+$stateBox.ScrollBars = "Vertical"
+$stateBox.Font = New-Object System.Drawing.Font("Consolas", 9)
+$form.Controls.Add($stateBox)
+
+$logBox = New-Object System.Windows.Forms.TextBox
+$logBox.Location = New-Object System.Drawing.Point(15, 590)
+$logBox.Size = New-Object System.Drawing.Size(900, 130)
+$logBox.Multiline = $true
+$logBox.ScrollBars = "Vertical"
+$logBox.Font = New-Object System.Drawing.Font("Consolas", 9)
+$form.Controls.Add($logBox)
+
+function Refresh-Display {
+    $statusLabel.Text = "Task: " + (Get-AgentTaskText)
+
+    $config = Read-Config
+    if ($config -and $secretBox.Text.Length -eq 0) {
+        $secretBox.Text = [string]$config.agent_secret
+    }
+
+    if (Test-Path $StatePath) {
+        $stateBox.Text = Get-Content $StatePath -Raw
+    } else {
+        $stateBox.Text = "No state file yet."
+    }
+
+    if (Test-Path $LogPath) {
+        $logBox.Text = (Get-Content $LogPath -Tail 30) -join [Environment]::NewLine
+    } else {
+        $logBox.Text = "No log file yet."
+    }
+}
+
+$showSecretCheck.Add_CheckedChanged({
+    $secretBox.UseSystemPasswordChar = -not $showSecretCheck.Checked
+})
+
+$saveSecretButton.Add_Click({
+    try {
+        $config = $configBox.Text | ConvertFrom-Json
+        $config.agent_secret = $secretBox.Text
+        $config | ConvertTo-Json -Depth 10 | Set-Content -Path $ConfigPath -Encoding UTF8
+        $configBox.Text = Get-Content $ConfigPath -Raw
+        [System.Windows.Forms.MessageBox]::Show("Secret saved. Restart the agent to apply changes.")
+    } catch {
+        [System.Windows.Forms.MessageBox]::Show("Could not save secret: " + $_.Exception.Message)
+    }
+})
+
+$startButton.Add_Click({
+    Start-ScheduledTask -TaskName $TaskName -ErrorAction SilentlyContinue
+    Start-Sleep -Seconds 1
+    Refresh-Display
+})
+
+$stopButton.Add_Click({
+    Stop-ScheduledTask -TaskName $TaskName -ErrorAction SilentlyContinue
+    Start-Sleep -Seconds 1
+    Refresh-Display
+})
+
+$restartButton.Add_Click({
+    Stop-ScheduledTask -TaskName $TaskName -ErrorAction SilentlyContinue
+    Start-Sleep -Seconds 2
+    Start-ScheduledTask -TaskName $TaskName -ErrorAction SilentlyContinue
+    Start-Sleep -Seconds 1
+    Refresh-Display
+})
+
+$saveButton.Add_Click({
+    try {
+        $null = $configBox.Text | ConvertFrom-Json
+        Save-ConfigText -Text $configBox.Text
+        [System.Windows.Forms.MessageBox]::Show("Config saved. Restart the agent to apply changes.")
+    } catch {
+        [System.Windows.Forms.MessageBox]::Show("Invalid JSON: " + $_.Exception.Message)
+    }
+})
+
+$testButton.Add_Click({
+    try {
+        $config = $configBox.Text | ConvertFrom-Json
+        if ($secretBox.Text.Length -gt 0) {
+            $config.agent_secret = $secretBox.Text
+        }
+
+        $hub = [string]$config.hub_url
+        $agentId = [string]$config.agent_id
+        $secret = [string]$config.agent_secret
+
+        $headers = @{
+            "X-MinerOps-Agent-ID" = $agentId
+            "X-MinerOps-Agent-Secret" = $secret
+        }
+
+        $result = Invoke-RestMethod -Uri ($hub.TrimEnd("/") + "/api/agent/config") -Headers $headers -TimeoutSec 20
+        [System.Windows.Forms.MessageBox]::Show("Hub test OK.`nSite: " + $result.site_name)
+    } catch {
+        [System.Windows.Forms.MessageBox]::Show("Hub test failed: " + $_.Exception.Message)
+    }
+})
+
+$timer = New-Object System.Windows.Forms.Timer
+$timer.Interval = 3000
+$timer.Add_Tick({ Refresh-Display })
+$timer.Start()
+
+Refresh-Display
+[void]$form.ShowDialog()

agents/windows/MinerOpsAgentTray.ps1

@@ -0,0 +1,108 @@
+Add-Type -AssemblyName System.Windows.Forms
+Add-Type -AssemblyName System.Drawing
+
+$TaskName = "MinerOpsAgent"
+$GuiPath = "C:\MinerOpsAgent\MinerOpsAgentGUI.ps1"
+$LogPath = "C:\MinerOpsAgent\logs\agent.log"
+$DashboardUrl = "https://plexus.lussier.cc/dashboard"
+
+function Start-Agent {
+    Start-ScheduledTask -TaskName $TaskName -ErrorAction SilentlyContinue
+}
+
+function Stop-Agent {
+    Stop-ScheduledTask -TaskName $TaskName -ErrorAction SilentlyContinue
+}
+
+function Restart-Agent {
+    Stop-ScheduledTask -TaskName $TaskName -ErrorAction SilentlyContinue
+    Start-Sleep -Seconds 2
+    Start-ScheduledTask -TaskName $TaskName -ErrorAction SilentlyContinue
+}
+
+function Open-Gui {
+    Start-Process powershell.exe -ArgumentList "-NoProfile -ExecutionPolicy Bypass -File `"$GuiPath`""
+}
+
+function Open-Dashboard {
+    Start-Process $DashboardUrl
+}
+
+function Open-Log {
+    if (Test-Path $LogPath) {
+        Start-Process notepad.exe $LogPath
+    }
+}
+
+function Get-AgentStatusText {
+    $task = Get-ScheduledTask -TaskName $TaskName -ErrorAction SilentlyContinue
+
+    if (!$task) {
+        return "MinerOps Agent: task not installed"
+    }
+
+    return "MinerOps Agent: $($task.State)"
+}
+
+$notify = New-Object System.Windows.Forms.NotifyIcon
+$notify.Icon = [System.Drawing.SystemIcons]::Application
+$notify.Text = Get-AgentStatusText
+$notify.Visible = $true
+
+$menu = New-Object System.Windows.Forms.ContextMenuStrip
+
+$itemOpen = $menu.Items.Add("Open Agent GUI")
+$itemOpen.Add_Click({ Open-Gui })
+
+$itemDashboard = $menu.Items.Add("Open Plexus Dashboard")
+$itemDashboard.Add_Click({ Open-Dashboard })
+
+$menu.Items.Add("-") | Out-Null
+
+$itemStart = $menu.Items.Add("Start Agent")
+$itemStart.Add_Click({
+    Start-Agent
+    Start-Sleep -Seconds 1
+    $notify.Text = Get-AgentStatusText
+})
+
+$itemStop = $menu.Items.Add("Stop Agent")
+$itemStop.Add_Click({
+    Stop-Agent
+    Start-Sleep -Seconds 1
+    $notify.Text = Get-AgentStatusText
+})
+
+$itemRestart = $menu.Items.Add("Restart Agent")
+$itemRestart.Add_Click({
+    Restart-Agent
+    Start-Sleep -Seconds 1
+    $notify.Text = Get-AgentStatusText
+})
+
+$menu.Items.Add("-") | Out-Null
+
+$itemLog = $menu.Items.Add("Open Log")
+$itemLog.Add_Click({ Open-Log })
+
+$itemExit = $menu.Items.Add("Exit Tray Icon")
+$itemExit.Add_Click({
+    $notify.Visible = $false
+    $notify.Dispose()
+    [System.Windows.Forms.Application]::Exit()
+})
+
+$notify.ContextMenuStrip = $menu
+
+$notify.Add_DoubleClick({
+    Open-Gui
+})
+
+$timer = New-Object System.Windows.Forms.Timer
+$timer.Interval = 5000
+$timer.Add_Tick({
+    $notify.Text = Get-AgentStatusText
+})
+$timer.Start()
+
+[System.Windows.Forms.Application]::Run()

agents/windows/MinerOpsApi3EnrichmentPoller.ps1

@@ -0,0 +1,247 @@
+param(
+    [int] $Limit = 25,
+    [int] $TimeoutMs = 2500
+)
+
+$ErrorActionPreference = "Stop"
+
+$ConfigPath = "C:\MinerOpsAgent\agent-config.json"
+
+if (-not (Test-Path $ConfigPath)) {
+    throw "Missing config file: $ConfigPath"
+}
+
+$Config = Get-Content $ConfigPath -Raw | ConvertFrom-Json
+$HubUrl = [string]$Config.hub_url
+$HubUrl = $HubUrl.TrimEnd("/")
+$AgentId = [string]$Config.agent_id
+$SiteName = [string]$Config.site_name
+$Secret = [string]$Config.agent_secret
+
+$Headers = @{
+    "X-MinerOps-Agent-ID" = $AgentId
+    "X-MinerOps-Agent-Secret" = $Secret
+}
+
+function Invoke-WhatsMinerApi3Read {
+    param(
+        [Parameter(Mandatory=$true)] [string] $Ip,
+        [Parameter(Mandatory=$true)] [hashtable] $Request,
+        [int] $TimeoutMs = 2500
+    )
+
+    $client = $null
+    $stream = $null
+
+    try {
+        $json = ($Request | ConvertTo-Json -Depth 20 -Compress)
+        $payload = [System.Text.Encoding]::ASCII.GetBytes($json)
+        $length = [BitConverter]::GetBytes([Int32]$payload.Length)
+
+        $client = New-Object System.Net.Sockets.TcpClient
+        $client.ReceiveTimeout = $TimeoutMs
+        $client.SendTimeout = $TimeoutMs
+
+        $connect = $client.BeginConnect($Ip, 4433, $null, $null)
+
+        if (-not $connect.AsyncWaitHandle.WaitOne($TimeoutMs, $false)) {
+            try { $client.Close() } catch {}
+            throw "Timed out connecting to $Ip`:4433"
+        }
+
+        $client.EndConnect($connect)
+
+        $stream = $client.GetStream()
+        $stream.ReadTimeout = $TimeoutMs
+        $stream.WriteTimeout = $TimeoutMs
+
+        $stream.Write($length, 0, 4)
+        $stream.Write($payload, 0, $payload.Length)
+        $stream.Flush()
+
+        $lenBuf = New-Object byte[] 4
+        $offset = 0
+
+        while ($offset -lt 4) {
+            $read = $stream.Read($lenBuf, $offset, 4 - $offset)
+
+            if ($read -le 0) {
+                throw "No response length received."
+            }
+
+            $offset += $read
+        }
+
+        $responseLength = [BitConverter]::ToInt32($lenBuf, 0)
+
+        if ($responseLength -le 0 -or $responseLength -gt 1048576) {
+            throw "Invalid response length: $responseLength"
+        }
+
+        $buffer = New-Object byte[] $responseLength
+        $offset = 0
+
+        while ($offset -lt $responseLength) {
+            $read = $stream.Read($buffer, $offset, $responseLength - $offset)
+
+            if ($read -le 0) {
+                throw "Response ended early at $offset of $responseLength bytes."
+            }
+
+            $offset += $read
+        }
+
+        $raw = [System.Text.Encoding]::ASCII.GetString($buffer, 0, $responseLength)
+        $parsed = $raw | ConvertFrom-Json
+
+        return [pscustomobject]@{
+            ok = $true
+            parsed = $parsed
+            error = $null
+        }
+    }
+    catch {
+        return [pscustomobject]@{
+            ok = $false
+            parsed = $null
+            error = $_.Exception.Message
+        }
+    }
+    finally {
+        if ($stream) { try { $stream.Close() } catch {} }
+        if ($client) { try { $client.Close() } catch {} }
+    }
+}
+
+function Invoke-Api3OkCommand {
+    param(
+        [string] $Ip,
+        [hashtable] $Request
+    )
+
+    $result = Invoke-WhatsMinerApi3Read -Ip $Ip -Request $Request -TimeoutMs $TimeoutMs
+
+    if (-not $result.ok) {
+        return $null
+    }
+
+    if ($result.parsed.code -ne 0) {
+        return $null
+    }
+
+    return $result.parsed
+}
+
+Write-Host "Fetching known miners from $HubUrl"
+
+$known = Invoke-RestMethod `
+    -Uri "$HubUrl/api/agent/known-miners" `
+    -Headers $Headers `
+    -Method Get
+
+$miners = @($known.miners)
+
+if ($Limit -gt 0) {
+    $miners = @($miners | Select-Object -First $Limit)
+}
+
+Write-Host "API3 enrichment check count: $($miners.Count)"
+
+$items = New-Object System.Collections.Generic.List[object]
+$checked = 0
+$api3Ok = 0
+$api3Failed = 0
+
+foreach ($miner in $miners) {
+    $checked += 1
+    $ip = [string]$miner.ip_address
+    $mac = [string]$miner.mac_address
+
+    if (-not $ip) {
+        continue
+    }
+
+    Write-Host "[$checked/$($miners.Count)] $ip $mac"
+
+    $deviceInfoResult = Invoke-WhatsMinerApi3Read `
+        -Ip $ip `
+        -Request @{ cmd = "get.device.info" } `
+        -TimeoutMs $TimeoutMs
+
+    if (-not $deviceInfoResult.ok -or $deviceInfoResult.parsed.code -ne 0) {
+        $api3Failed += 1
+
+        $err = $deviceInfoResult.error
+
+        if ($deviceInfoResult.ok) {
+            $err = "API3 code $($deviceInfoResult.parsed.code): $($deviceInfoResult.parsed.msg)"
+        }
+
+        $items.Add([pscustomobject]@{
+            ip = $ip
+            mac = $mac
+            api3_supported = $false
+            api3_error = $err
+            device_info = $null
+            miner_setting = $null
+            miner_status = $null
+            fan_setting = $null
+            custom_data = $null
+        })
+
+        continue
+    }
+
+    $api3Ok += 1
+
+    $minerSetting = Invoke-Api3OkCommand `
+        -Ip $ip `
+        -Request @{ cmd = "get.miner.setting" }
+
+    $minerStatus = Invoke-Api3OkCommand `
+        -Ip $ip `
+        -Request @{ cmd = "get.miner.status"; param = "summary+pools+edevs" }
+
+    $fanSetting = Invoke-Api3OkCommand `
+        -Ip $ip `
+        -Request @{ cmd = "get.fan.setting" }
+
+    $customData = Invoke-Api3OkCommand `
+        -Ip $ip `
+        -Request @{ cmd = "get.device.custom_data" }
+
+    $items.Add([pscustomobject]@{
+        ip = $ip
+        mac = $mac
+        api3_supported = $true
+        api3_error = $null
+        device_info = $deviceInfoResult.parsed
+        miner_setting = $minerSetting
+        miner_status = $minerStatus
+        fan_setting = $fanSetting
+        custom_data = $customData
+    })
+}
+
+$payload = @{
+    agent_id = $AgentId
+    site_name = $SiteName
+    items = @($items.ToArray())
+}
+
+$json = $payload | ConvertTo-Json -Depth 80
+
+Write-Host "Posting API3 enrichment results to hub..."
+$result = Invoke-RestMethod `
+    -Uri "$HubUrl/api/agent/api3-enrichment" `
+    -Method Post `
+    -Headers $Headers `
+    -ContentType "application/json" `
+    -Body $json
+
+Write-Host ""
+Write-Host "Local checked: $checked"
+Write-Host "API3 OK: $api3Ok"
+Write-Host "API3 failed: $api3Failed"
+Write-Host ""
+$result | ConvertTo-Json -Depth 20

agents/windows/MinerOpsControl.ps1

@@ -0,0 +1,201 @@
+# Typed MinerOps miner-control execution. Loaded by MinerOpsAgentService.ps1.
+
+function Get-MinerOpsAgentVersion {
+    $versionPath = Join-Path $PSScriptRoot "VERSION"
+    if (Test-Path $versionPath) {
+        return ([string](Get-Content $versionPath -Raw)).Trim()
+    }
+    return "unknown"
+}
+
+function Get-MinerOpsControlCredentials {
+    $config = Read-AgentConfig
+    $account = ([string]$config.api3_account).Trim()
+    $password = [string]$config.api3_password
+    $port = 4433
+    if ($config.api3_port) {
+        try { $port = [int]$config.api3_port } catch { $port = 4433 }
+    }
+    return @{
+        available = (-not [string]::IsNullOrWhiteSpace($account)) -and
+            (-not [string]::IsNullOrWhiteSpace($password))
+        account = $account
+        password = $password
+        port = $port
+    }
+}
+
+function Invoke-MinerOpsControlApi3Command {
+    param(
+        [Parameter(Mandatory=$true)][string]$IpAddress,
+        [Parameter(Mandatory=$true)][string]$Command,
+        [object]$Param = $null
+    )
+    $credentials = Get-MinerOpsControlCredentials
+    if (-not $credentials.available) { throw "credentials_missing" }
+
+    $saltInfo = Get-MinerOpsApi3Salt -IpAddress $IpAddress -Port $credentials.port
+    $timestamp = [int64][DateTimeOffset]::UtcNow.ToUnixTimeSeconds()
+    $token = Get-MinerOpsApi3Token -Command $Command -Password $credentials.password `
+        -Salt ([string]$saltInfo.salt) -Timestamp $timestamp
+    $payload = @{
+        cmd = $Command
+        ts = $timestamp
+        token = $token
+        account = $credentials.account
+    }
+    if ($null -ne $Param) { $payload["param"] = $Param }
+    $response = Invoke-MinerOpsApi3Payload -IpAddress $IpAddress `
+        -Port $credentials.port -Payload $payload
+    if ([int]$response.response.code -ne 0) { throw "command_rejected" }
+    return $response
+}
+
+function New-MinerOpsControlResult {
+    param(
+        [bool]$Accepted,
+        [bool]$VerificationAttempted,
+        [string]$VerificationStatus,
+        [string]$ObservedMode = "",
+        [string]$FailureCode = "",
+        [string]$QueueStatus = "completed"
+    )
+    return [ordered]@{
+        schema_version = 1
+        command_accepted = $Accepted
+        verification_attempted = $VerificationAttempted
+        verification_status = $VerificationStatus
+        observed_service_state = $null
+        observed_performance_mode = if ($ObservedMode) { $ObservedMode } else { $null }
+        failure_code = if ($FailureCode) { $FailureCode } else { $null }
+        _queue_status = $QueueStatus
+    }
+}
+
+function Run-MinerControlCommand {
+    param([Parameter(Mandatory=$true)][object]$Payload)
+
+    try {
+        if ($Payload -is [string]) { $Payload = $Payload | ConvertFrom-Json }
+        $action = ([string]$Payload.action).Trim().ToLower()
+        $ipAddress = ([string]$Payload.ip_address).Trim()
+        $requested = ([string]$Payload.requested_value).Trim().ToLower()
+        if (-not $requested -and $Payload.performance_mode) {
+            $requested = ([string]$Payload.performance_mode).Trim().ToLower()
+        }
+        if ($action -notin @("suspend", "resume", "performance_mode")) {
+            return New-MinerOpsControlResult -Accepted $false `
+                -VerificationAttempted $false -VerificationStatus "unavailable" `
+                -FailureCode "invalid_action" -QueueStatus "failed"
+        }
+        if ([string]::IsNullOrWhiteSpace($ipAddress)) {
+            return New-MinerOpsControlResult -Accepted $false `
+                -VerificationAttempted $false -VerificationStatus "unavailable" `
+                -FailureCode "target_missing" -QueueStatus "failed"
+        }
+        $credentials = Get-MinerOpsControlCredentials
+        if (-not $credentials.available) {
+            return New-MinerOpsControlResult -Accepted $false `
+                -VerificationAttempted $false -VerificationStatus "unavailable" `
+                -FailureCode "credentials_missing" -QueueStatus "failed"
+        }
+
+        if ($action -eq "performance_mode") {
+            if ($requested -notin @("low", "normal", "high")) {
+                return New-MinerOpsControlResult -Accepted $false `
+                    -VerificationAttempted $false -VerificationStatus "unavailable" `
+                    -FailureCode "invalid_mode" -QueueStatus "failed"
+            }
+            Invoke-MinerOpsControlApi3Command -IpAddress $ipAddress `
+                -Command "set.miner.power_mode" -Param $requested | Out-Null
+
+            $observed = ""
+            $readUnavailable = $false
+            for ($attempt = 1; $attempt -le 3; $attempt++) {
+                try {
+                    $read = Invoke-MinerOpsControlApi3Command -IpAddress $ipAddress `
+                        -Command "get.miner.setting"
+                    $candidate = ([string]$read.response.msg.'power-mode').Trim().ToLower()
+                    if ($candidate -in @("low", "normal", "high")) {
+                        $observed = $candidate
+                        if ($observed -eq $requested) {
+                            return New-MinerOpsControlResult -Accepted $true `
+                                -VerificationAttempted $true -VerificationStatus "confirmed" `
+                                -ObservedMode $observed
+                        }
+                    }
+                } catch {
+                    if ($_.Exception.Message -match "unsupported|unknown_command") {
+                        $readUnavailable = $true
+                        break
+                    }
+                }
+                if ($attempt -lt 3) { Start-Sleep -Milliseconds 750 }
+            }
+            if ($readUnavailable) {
+                return New-MinerOpsControlResult -Accepted $true `
+                    -VerificationAttempted $true -VerificationStatus "unavailable"
+            }
+            if ($observed) {
+                return New-MinerOpsControlResult -Accepted $true `
+                    -VerificationAttempted $true `
+                    -VerificationStatus "verification_failed" -ObservedMode $observed
+            }
+            return New-MinerOpsControlResult -Accepted $true `
+                -VerificationAttempted $true -VerificationStatus "unconfirmed"
+        }
+
+        $serviceAction = if ($action -eq "suspend") { "stop" } else { "start" }
+        Invoke-MinerOpsControlApi3Command -IpAddress $ipAddress `
+            -Command "set.miner.service" -Param $serviceAction | Out-Null
+        return New-MinerOpsControlResult -Accepted $true `
+            -VerificationAttempted $false -VerificationStatus "unconfirmed"
+    } catch {
+        $failure = if ($_.Exception.Message -eq "credentials_missing") {
+            "credentials_missing"
+        } else { "write_rejected" }
+        return New-MinerOpsControlResult -Accepted $false `
+            -VerificationAttempted $false -VerificationStatus "unavailable" `
+            -FailureCode $failure -QueueStatus "failed"
+    }
+}
+
+function Send-AgentCommandResult {
+    param(
+        [string]$CommandId,
+        [string]$Status,
+        [object]$ResultPayload = $null,
+        [string]$ErrorMessage = $null
+    )
+    if ($ResultPayload -and $ResultPayload._queue_status) {
+        $Status = [string]$ResultPayload._queue_status
+        $ResultPayload.Remove("_queue_status")
+        $ErrorMessage = if ($ResultPayload.failure_code) {
+            [string]$ResultPayload.failure_code
+        } else { $null }
+    }
+    $body = [ordered]@{
+        command_id = $CommandId
+        status = $Status
+        result_payload = $ResultPayload
+        error_message = $ErrorMessage
+    }
+    return Invoke-AgentApi -Method "POST" -Path "/api/agent/commands/result" -Body $body
+}
+
+function Send-AgentCheckin {
+    $config = Read-AgentConfig
+    $credentials = Get-MinerOpsControlCredentials
+    $body = [ordered]@{
+        agent_id = [string]$config.agent_id
+        site_id = [string]$config.site_id
+        site_name = [string]$config.site_name
+        hostname = $env:COMPUTERNAME
+        version = Get-MinerOpsAgentVersion
+        ip_address = ""
+        control_available = [bool]$credentials.available
+        control_unavailable_reason = if ($credentials.available) { $null } else { "credentials_missing" }
+        local_time = (Get-Date).ToString("o")
+    }
+    return Invoke-AgentApi -Method "POST" -Path "/api/agent/checkin" -Body $body
+}

agents/windows/MinerOpsPoolPoller.ps1

@@ -0,0 +1,147 @@
+$ErrorActionPreference = "Stop"
+
+$ConfigPath = "C:\MinerOpsAgent\agent-config.json"
+$Config = Get-Content -Raw $ConfigPath | ConvertFrom-Json
+
+$HubUrl = ($Config.hub_url + "").TrimEnd("/")
+$AgentId = $Config.agent_id
+$AgentSecret = $Config.agent_secret
+
+$Headers = @{
+    "X-MinerOps-Agent-ID" = $AgentId
+    "X-MinerOps-Agent-Secret" = $AgentSecret
+}
+
+function Normalize-MinerOpsIp {
+    param([string] $Ip)
+
+    if (-not $Ip) {
+        return ""
+    }
+
+    return ($Ip -replace "/32$", "").Trim()
+}
+
+function Invoke-MinerOps4028PoolsSimple {
+    param(
+        [Parameter(Mandatory=$true)] [string] $Ip,
+        [int] $Port = 4028,
+        [int] $TimeoutMs = 5000
+    )
+
+    $client = $null
+    $stream = $null
+
+    try {
+        $json = '{"command":"pools"}'
+
+        $client = New-Object System.Net.Sockets.TcpClient
+        $client.ReceiveTimeout = $TimeoutMs
+        $client.SendTimeout = $TimeoutMs
+        $client.Connect($Ip, $Port)
+
+        $stream = $client.GetStream()
+        $stream.ReadTimeout = $TimeoutMs
+        $stream.WriteTimeout = $TimeoutMs
+
+        $bytes = [System.Text.Encoding]::ASCII.GetBytes($json)
+        $stream.Write($bytes, 0, $bytes.Length)
+        $stream.Flush()
+
+        Start-Sleep -Milliseconds 500
+
+        $buffer = New-Object byte[] 131072
+        $read = $stream.Read($buffer, 0, $buffer.Length)
+
+        if ($read -le 0) {
+            return $null
+        }
+
+        $raw = [System.Text.Encoding]::ASCII.GetString($buffer, 0, $read).Trim([char]0).Trim()
+
+        if (-not $raw) {
+            return $null
+        }
+
+        $parsed = $raw | ConvertFrom-Json
+
+        if (-not $parsed.POOLS) {
+            return $null
+        }
+
+        return @($parsed.POOLS)
+    }
+    catch {
+        return $null
+    }
+    finally {
+        if ($stream) {
+            try { $stream.Close() } catch {}
+        }
+
+        if ($client) {
+            try { $client.Close() } catch {}
+        }
+    }
+}
+
+$response = Invoke-RestMethod -Method Get -Uri "$HubUrl/api/agent/known-miners" -Headers $Headers -TimeoutSec 60
+
+$knownMiners = @()
+
+if ($response.miners) {
+    $knownMiners = @($response.miners)
+} elseif ($response.data -and $response.data.miners) {
+    $knownMiners = @($response.data.miners)
+} elseif ($response.data -and $response.data.known_miners) {
+    $knownMiners = @($response.data.known_miners)
+}
+
+Write-Host "Known miners: $($knownMiners.Count)"
+
+$poolSnapshots = New-Object System.Collections.Generic.List[object]
+$count = 0
+
+foreach ($miner in $knownMiners) {
+    $count++
+
+    $ip = Normalize-MinerOpsIp -Ip $miner.ip_address
+
+    if (-not $ip) {
+        continue
+    }
+
+    if (($count % 25) -eq 0) {
+        Write-Host "Checked $count / $($knownMiners.Count). Collected $($poolSnapshots.Count)."
+    }
+
+    $pools = @(Invoke-MinerOps4028PoolsSimple -Ip $ip)
+
+    if ($pools.Count -gt 0) {
+        $poolSnapshots.Add([pscustomobject]@{
+            miner_id = $miner.miner_id
+            ip_address = $ip
+            mac_address = $miner.mac_address
+            model = $miner.model
+            pools = @($pools)
+        })
+    }
+}
+
+Write-Host "Pool snapshots collected: $($poolSnapshots.Count)"
+
+$body = @{
+    agent_id = $AgentId
+    pool_snapshots = $poolSnapshots
+} | ConvertTo-Json -Depth 20
+
+$result = Invoke-RestMethod `
+    -Method Post `
+    -Uri "$HubUrl/api/agent/pool-snapshots" `
+    -Headers $Headers `
+    -Body $body `
+    -ContentType "application/json" `
+    -TimeoutSec 180
+
+$result | ConvertTo-Json -Depth 10
+

agents/windows/MinerOpsPoolPollerTask.ps1

@@ -0,0 +1,28 @@
+$LogDir = "C:\MinerOpsAgent\logs"
+$LogFile = Join-Path $LogDir "pool-poller.log"
+
+if (-not (Test-Path $LogDir)) {
+    New-Item -ItemType Directory -Path $LogDir -Force | Out-Null
+}
+
+$stamp = Get-Date -Format "yyyy-MM-dd HH:mm:ss"
+
+try {
+    Add-Content -Path $LogFile -Value "$stamp Starting MinerOps pool poller."
+
+    $output = powershell.exe -NoProfile -ExecutionPolicy Bypass -File "C:\MinerOpsAgent\MinerOpsPoolPoller.ps1" 2>&1
+
+    foreach ($line in $output) {
+        Add-Content -Path $LogFile -Value "$line"
+    }
+
+    $stamp = Get-Date -Format "yyyy-MM-dd HH:mm:ss"
+    Add-Content -Path $LogFile -Value "$stamp Pool poller finished."
+    Add-Content -Path $LogFile -Value ""
+}
+catch {
+    $stamp = Get-Date -Format "yyyy-MM-dd HH:mm:ss"
+    Add-Content -Path $LogFile -Value "$stamp Pool poller failed: $($_.Exception.Message)"
+    Add-Content -Path $LogFile -Value ""
+    exit 1
+}

agents/windows/README.md

@@ -0,0 +1,232 @@
+# MinerOps Windows Agent
+
+The Windows Agent runs at a mining site and performs local discovery, polling,
+API3 enrichment, pool polling, and approved queued miner-control operations.
+MinerOps does not send API3 credentials through the hub command queue; those
+credentials remain in the Agent's local `agent-config.json`.
+
+## Recovered Baseline
+
+The seven runtime and support scripts in this directory were recovered from the
+live `C:\MinerOpsAgent` installation. `BASELINE_SHA256SUMS` records their exact
+pre-change hashes. Historical backups, live configuration, state, logs, and
+probe output are intentionally excluded.
+
+## Local Files
+
+Create `agent-config.json` from `config.example.json` on the Agent host. Never
+commit that file. `site_id` is the durable MinerOps site UUID. `agent_zone_id` is the optional
+durable network-reachability Zone UUID; older configurations may omit it only
+when the Hub can preserve an established assignment or resolve exactly one
+enabled Zone at the Site. `site_name` is retained only for transitional display
+compatibility.
+
+The Agent writes runtime state to `agent-state.json` and logs under `logs/`.
+Installation and upgrades preserve all three paths.
+
+## Security
+
+API3 account and password values are local secrets. Missing credentials make
+miner control unavailable. Passwords, API tokens, salts, and the Agent secret
+must not be written to normal logs or returned to MinerOps command history.
+
+New Agent identities use per-Agent credentials created through secure
+one-time enrollment. The permanent Agent secret is returned only to the
+enrolling Agent and is stored locally in `agent-config.json`; MinerOps stores
+only its hash. The legacy deployment shared secret remains only for explicitly
+retained compatibility behavior and must not authenticate a newly enrolled
+per-Agent identity.
+
+## Legacy Compatibility
+
+The older direct Hub API3, `/agent-control`, password-change, bulk-control, and
+scheduling paths remain available for compatibility and are deprecated for the
+Internal Alpha. The new Miner Detail controls use only the typed control API and
+Agent queue; the modular control backend does not connect directly to miners.
+
+## Deployment
+
+### New Agent enrollment
+
+For a new Agent, use Agent Management in MinerOps:
+
+1. Choose the Site and an enabled, unassigned Agent Zone.
+2. Enter a descriptive Agent name.
+3. Create a Windows enrollment.
+4. Download MinerOpsAgent-Windows.zip before the enrollment expires.
+5. Copy the ZIP to the intended Windows machine and extract it.
+6. Open Windows PowerShell as Administrator in the extracted
+   MinerOpsAgent-Windows directory.
+7. Run:
+
+       .\Enroll-MinerOpsAgent.ps1
+
+8. Enter the local WhatsMiner API3 account/password when prompted, or leave
+   the account blank if API3 functionality is not being configured yet.
+9. The bootstrapper exchanges the short-lived token with POST /api/agent/enroll,
+   saves the resulting permanent Agent identity locally, and hands off to the
+   safe runtime installer.
+10. Verify the Agent appears in Agent Management and checks in successfully.
+11. Delete the downloaded ZIP and extracted setup directory.
+
+Do not place enrollment.json, enrollment tokens, Agent secrets, or API3
+credentials in screenshots, chat, tickets, logs, or source control.
+
+### Existing Agent upgrade
+
+An existing legacy Agent must receive a per-Agent credential before the global
+shared-secret compatibility path can be retired for its identity. In Agent
+Management, use **Upgrade credential** on that Agent. Download the resulting
+Windows package, transfer it only to that Agent computer, and run:
+
+       .\Upgrade-MinerOpsAgentCredential.ps1
+
+The authorization is bound server-side to the existing Agent ID and its
+current Site and Agent Zone. The script validates the local Agent ID, upgrades
+the canonical runtime, stops the main Agent task, generates the permanent
+secret locally, and recoverably replaces only the credential and durable routing
+fields in `agent-config.json` using protected same-directory pending and prior
+names. Existing API3 credentials, polling settings,
+network ranges, state, logs, and backups are preserved. Before any secret is
+written, the script creates and verifies a protected recovery file containing
+the original Scheduled Task state, exact transition token, and exact locally
+generated credential. The Hub accepts an ambiguous retry only for that same
+token and credential.
+
+The Agent directory is a filesystem security boundary. The transition rejects
+junctions/reparse points, verifies trusted ancestors, denies standard users
+create/delete/rename rights, and revalidates the boundary before each rename.
+If an existing Agent directory is discovered insecure, the script first writes
+`C:\MinerOpsAgent.minerops-filesystem-trust.blocked-<random>.state` under the trusted
+parent, then hardens the directory only to contain the incident. The blocker is
+outside the contaminated namespace because changing a DACL does not revoke
+file or directory handles opened before repair. The same process never redeems
+a token, creates or activates a permanent credential, runs the installer, or
+removes that blocker. Ordinary second, third, and later invocations remain
+blocked even when every current ACL looks correct.
+
+Recovery, pending, replacement remnants, and late-arriving artifacts are
+non-authoritative while the external blocker exists. Known transition state is
+quarantined without parsing. A correct filename, syntax, or ACL cannot promote
+it on a later run. Invalidate any possibly exposed authorization and retain or
+remove evidence only under the approved incident procedure.
+
+### Filesystem trust-epoch recovery
+
+Use this procedure only after confirming the blocker was created by the
+containment event and preserving required evidence:
+
+1. Do not delete or edit the external blocker. Do not run an ordinary retry.
+2. Use **Restart** to perform a full Windows kernel boot. Shutdown with Fast
+   Startup is not sufficient: Microsoft documents Fast Startup as hibernating
+   and restoring kernel session 0. The script identifies the kernel epoch by
+   the Event Log record anchor of the newest
+   `Microsoft-Windows-Kernel-Boot` event 27 whose `BootType` is exactly `0`.
+   Provider, event ID, record ID, and supported event version come from typed
+   EventRecord properties; namespace-aware XML selection reads only the
+   `BootType` payload. The new full-boot record ID must be strictly greater
+   than the stored record ID. Equality, an older/restored record, log clearing
+   or numbering reset, missing history, duplication, malformed XML, and an
+   unsupported provider schema all fail closed and require safe operator
+   intervention. There is no timestamp fallback. The anchor is unchanged by
+   clock or timezone changes, sleep, hibernation, and Fast Startup. See
+   Microsoft's [system power-state documentation](https://learn.microsoft.com/windows/win32/power/system-power-states)
+   and [Fast Startup support guidance](https://learn.microsoft.com/troubleshoot/windows-client/setup-upgrade-and-drivers/fast-startup-causes-system-hibernation-shutdown-fail).
+3. For a credential transition, use a fresh transition package if any recovery,
+   pending, remnant, quarantine, or internal blocker existed. Remove those
+   artifacts only under the approved incident procedure after invalidating the
+   old authorization.
+4. From the reviewed package, run:
+
+       .\Upgrade-MinerOpsAgentCredential.ps1 `
+           -ApproveFilesystemTrustResetAfterReboot
+
+   The script verifies that Windows boot identity changed, rescans the protected
+   namespace, positively verifies and stops the expected Scheduled Task, and asks the
+   installer to replace managed runtime without backing up or restoring any
+   pre-reset runtime. The installer leaves both the Agent task and external
+   blocker untouched after publication; it has no blocker-deletion path. Before
+   its first fallible stop/install step, the parent durably records the strictly
+   validated original task intent as `reset-authorized`; after installer
+   success it advances the blocker to `runtime-published`. It then verifies the
+   config against the package/server identity, commits the credential, and
+   restores the recorded task intent. Only the parent removes the blocker,
+   after active config and final task state have both been positively verified
+   and non-recovery transition cleanup has succeeded. Protected recovery stays
+   until after blocker deletion so an interrupted final cleanup remains safe.
+5. For a genuinely new enrollment, preserve evidence and use the approved
+   protected-recreation incident procedure to remove the contaminated namespace
+   and its external blocker, then let `Enroll-MinerOpsAgent.ps1` stage a new
+   protected directory. Enrollment has no in-script blocker-deletion path; its
+   explicit compatibility switch cannot override a retained blocker.
+
+The explicit switch without a strictly newer canonical full-kernel-boot anchor
+fails.
+Any suspicious transition artifact, failed runtime publication, failed
+credential convergence, invalid final task, or interrupted cleanup retains the
+blocker. Runtime publication alone never authorizes deletion. Protected
+directory recreation is the alternative when the retained namespace cannot be
+verified.
+
+If the script is interrupted after the Hub commits, rerun the same extracted
+package without deleting or editing `agent-credential-transition.recovery.json`
+or `agent-config.json.pending`. A protected, matching pending config is resumed;
+an insecure, malformed, or mismatched artifact fails closed. The original task
+intent is durable: an Agent which was running before the first attempt ends
+running, while an intentionally stopped Agent remains stopped. Success is not
+reported and transition artifacts are not removed until both the active config
+and expected final task state are verified. The verifier requires exactly one
+enabled root `MinerOpsAgent` task, the SYSTEM service-account/highest principal,
+the installed Windows PowerShell action and service-script arguments, and an
+exact final state of `Running` for running intent or `Ready` for stopped intent.
+Missing, query failure, access denied, malformed, multiple, disabled, queued,
+unknown, wrong-action, and wrong-principal results all fail closed and retain
+recovery.
+
+After a successful transition, the existing Agent ID, Site, and Zone are
+unchanged. Explicit Agent ID plus the new per-Agent secret is required, and the
+legacy shared secret is permanently disabled for that identity.
+
+For later code-only upgrades of an Agent that already has a per-Agent
+credential, copy the new canonical Agent files to a temporary directory and run
+install.ps1 from an elevated Windows PowerShell session.
+
+The installer copies only managed runtime code to C:\MinerOpsAgent and
+preserves agent-config.json, agent-state.json, logs\, backups, probe output,
+and other runtime data. Existing Scheduled Task definitions are authoritative
+and are not rewritten. Missing tasks are created for a fresh or incomplete
+installation without hard-coded user names.
+
+The per-user `MinerOpsAgentTray` task is optional UI and is not credential or
+core Agent authority. During an explicit filesystem trust reset, runtime
+publication may run noninteractively as `NT AUTHORITY\SYSTEM`, where no safe
+interactive user principal can be inferred. The installer still publishes
+`MinerOpsAgentTray.ps1`, but deliberately defers creation of a missing tray task
+until a later interactive maintenance install. It never creates the tray task
+as SYSTEM or invents a username. An existing tray task remains authoritative
+and is preserved unchanged rather than silently repaired under SYSTEM; inspect
+and remediate a suspected malformed definition separately. The core
+`MinerOpsAgent` task remains mandatory and strictly verified by credential
+recovery. `MinerOpsApi3Enrichment` and `MinerOpsPoolPoller` are non-interactive
+background tasks with explicit SYSTEM principals, so missing instances continue
+to be created during trust-reset publication.
+
+If MinerOpsAgent was running before an upgrade, the installer stops only that
+Scheduled Task, waits for it to stop, replaces the managed files, and starts it
+again. A previously stopped Agent remains stopped. Before replacing runtime
+files, the installer copies them to a timestamped backup under
+C:\MinerOpsAgent\backups.
+
+Runtime sources, installed destinations, active config, and rollback copies are
+rejected when they are reparse points or have more than one hard link. A normal
+trusted upgrade creates a fresh random backup directory and never adopts an
+existing backup destination. During an explicit post-reboot trust reset, old
+runtime is never copied into backup or restored; fresh package content replaces
+it while the external blocker remains, and the Agent task stays stopped for
+credential verification.
+
+A failed deployment restores managed files, removes tasks created by that
+failed attempt, and restores the main Agent's prior running state.
+
+uninstall.ps1 unregisters the four MinerOps Scheduled Tasks and removes runtime
+code while preserving local configuration, state, logs, and backups.

agents/windows/VERSION

@@ -0,0 +1 @@
+1.0.0-alpha

agents/windows/config.example.json

@@ -0,0 +1,22 @@
+{
+  "hub_url": "https://minerops.example.invalid",
+  "agent_id": "replace-with-agent-id",
+  "site_id": "00000000-0000-0000-0000-000000000000",
+  "agent_zone_id": "00000000-0000-0000-0000-000000000000",
+  "site_name": "Example Site",
+  "agent_secret": "replace-with-agent-secret",
+  "poll_interval_seconds": 120,
+  "ip_ranges": [
+    {
+      "name": "Example Range",
+      "cidr": "192.0.2.0/24",
+      "enabled": false,
+      "api_port": 4028,
+      "api3_port": 4433
+    }
+  ],
+  "api3_account": "replace-with-api3-account",
+  "api3_password": "replace-with-api3-password",
+  "api3_port": 4433
+}
+

agents/windows/tests/Invoke-MinerOpsStandardUserProbe.ps1

@@ -0,0 +1,247 @@
+[CmdletBinding()]
+param(
+    [Parameter(Mandatory = $true)][string]$Operation,
+    [Parameter(Mandatory = $true)][string]$InputPath,
+    [string]$DestinationPath = "",
+    [ValidateSet("None", "Path")][string]$BackupMode = "None",
+    [string]$BackupPath = "",
+    [Parameter(Mandatory = $true)][string]$ResultPath,
+    [Parameter(Mandatory = $true)][string]$SupportPath
+)
+
+$ErrorActionPreference = "Stop"
+. $SupportPath
+
+$sourceCreatedByCaller = $false
+$sourceReadVerified = $false
+$sourceModifyVerified = $false
+$sourceRenameVerified = $false
+$sourceDeleteAccessVerified = $false
+$sourceReplaceAccessVerified = $false
+$replaceInvoked = $false
+$sourceExistedBeforeAttack = $null
+$destinationExistedBeforeAttack = $null
+$backupExistedBeforeAttack = $null
+$inputFullPath = ""
+$destinationFullPath = ""
+$backupFullPath = ""
+$backupArgumentWasNativeNull = $false
+
+function Get-ProbeMetadata {
+    param(
+        [Parameter(Mandatory = $true)][string]$Status,
+        [Exception]$Exception
+    )
+
+    $inputOwnedByCaller = $false
+    if ([IO.File]::Exists($InputPath)) {
+        try {
+            $callerSid = [Security.Principal.WindowsIdentity]::GetCurrent().User
+            $ownerSid = [IO.File]::GetAccessControl($InputPath).GetOwner(
+                [Security.Principal.SecurityIdentifier]
+            )
+            $inputOwnedByCaller = $callerSid.Equals($ownerSid)
+        }
+        catch {
+            $inputOwnedByCaller = $false
+        }
+    }
+
+    $details = if ($null -ne $Exception) {
+        Get-MinerOpsNativeExceptionDetails -Exception $Exception
+    }
+    else { $null }
+    return [ordered]@{
+        status = $Status
+        operation = $Operation
+        # Retain these two outer-exception fields for compatibility with
+        # earlier native-harness result readers.
+        exception_type = if ($null -ne $Exception) {
+            $Exception.GetType().FullName
+        }
+        else {
+            ""
+        }
+        hresult = if ($null -ne $details) { $details.OuterHResult } else { 0 }
+        outer_exception_type = if ($null -ne $details) {
+            $details.OuterExceptionType
+        }
+        else { "" }
+        outer_hresult = if ($null -ne $details) {
+            $details.OuterHResult
+        }
+        else { 0 }
+        leaf_exception_type = if ($null -ne $details) {
+            $details.LeafExceptionType
+        }
+        else { "" }
+        leaf_hresult = if ($null -ne $details) {
+            $details.LeafHResult
+        }
+        else { 0 }
+        native_error = if ($null -ne $details) {
+            $details.NativeError
+        }
+        else { $null }
+        exception_chain_types = if ($null -ne $details) {
+            @($details.ExceptionChainTypes)
+        }
+        else { @() }
+        exception_chain_truncated = if ($null -ne $details) {
+            [bool]$details.ExceptionChainTruncated
+        }
+        else { $false }
+        source_exists = [IO.File]::Exists($InputPath)
+        destination_exists = if (
+            [string]::IsNullOrWhiteSpace($DestinationPath)
+        ) {
+            $null
+        }
+        else {
+            [IO.File]::Exists($DestinationPath)
+        }
+        input_owned_by_caller = $inputOwnedByCaller
+        source_created_by_caller = $sourceCreatedByCaller
+        source_read_verified = $sourceReadVerified
+        source_modify_verified = $sourceModifyVerified
+        source_rename_verified = $sourceRenameVerified
+        source_delete_access_verified = $sourceDeleteAccessVerified
+        source_replace_access_verified = $sourceReplaceAccessVerified
+        input_full_path = $inputFullPath
+        destination_full_path = $destinationFullPath
+        backup_mode = $BackupMode
+        backup_full_path = $backupFullPath
+        backup_argument_was_native_null = $backupArgumentWasNativeNull
+        source_existed_before_attack = $sourceExistedBeforeAttack
+        destination_existed_before_attack = $destinationExistedBeforeAttack
+        backup_existed_before_attack = $backupExistedBeforeAttack
+        replace_overload = "System.IO.File.Replace(String,String,String)"
+        replace_invoked = $replaceInvoked
+    }
+}
+
+function Write-ProbeResult {
+    param([Parameter(Mandatory = $true)]$Value)
+
+    $json = $Value | ConvertTo-Json -Compress
+    [IO.File]::WriteAllText($ResultPath, $json)
+}
+
+$exception = $null
+$status = "succeeded"
+try {
+    switch ($Operation) {
+        "read" { [void][IO.File]::ReadAllText($InputPath) }
+        "create" { [IO.File]::WriteAllText($InputPath, "untrusted") }
+        "modify" { [IO.File]::WriteAllText($InputPath, "untrusted") }
+        "delete" { [IO.File]::Delete($InputPath) }
+        "rename" { [IO.File]::Move($InputPath, $DestinationPath) }
+        "prepare_swap" {
+            if ([IO.File]::Exists($InputPath)) {
+                throw [ArgumentException]::new(
+                    "swap source unexpectedly existed before caller creation"
+                )
+            }
+            $renameProof = "$InputPath.rename-proof-$([guid]::NewGuid().ToString('N'))"
+            [IO.File]::WriteAllText(
+                $InputPath,
+                "attacker-controlled-swap-source"
+            )
+            $sourceCreatedByCaller = $true
+            $sourceReadVerified = [IO.File]::ReadAllText($InputPath) -ceq
+                "attacker-controlled-swap-source"
+            [IO.File]::AppendAllText($InputPath, "-modified")
+            $sourceModifyVerified = [IO.File]::ReadAllText($InputPath) -ceq
+                "attacker-controlled-swap-source-modified"
+            [IO.File]::Move($InputPath, $renameProof)
+            [IO.File]::Move($renameProof, $InputPath)
+            $sourceRenameVerified = [IO.File]::Exists($InputPath) -and
+                -not [IO.File]::Exists($renameProof)
+
+            $requiredRights =
+                [Security.AccessControl.FileSystemRights]::ReadData -bor
+                [Security.AccessControl.FileSystemRights]::WriteData -bor
+                [Security.AccessControl.FileSystemRights]::Delete -bor
+                [Security.AccessControl.FileSystemRights]::ChangePermissions -bor
+                [Security.AccessControl.FileSystemRights]::Synchronize
+            $rightsProbe = [IO.FileStream]::new(
+                $InputPath,
+                [IO.FileMode]::Open,
+                $requiredRights,
+                [IO.FileShare]::ReadWrite -bor [IO.FileShare]::Delete,
+                4096,
+                [IO.FileOptions]::None
+            )
+            try {
+                $sourceDeleteAccessVerified = $true
+                $sourceReplaceAccessVerified = $true
+            }
+            finally {
+                $rightsProbe.Dispose()
+            }
+        }
+        "swap" {
+            $inputFullPath = [IO.Path]::GetFullPath($InputPath)
+            $destinationFullPath = [IO.Path]::GetFullPath($DestinationPath)
+            if ($inputFullPath.Equals(
+                $destinationFullPath,
+                [StringComparison]::OrdinalIgnoreCase
+            )) {
+                throw [ArgumentException]::new(
+                    "swap source and destination are the same path"
+                )
+            }
+
+            $sourceExistedBeforeAttack = [IO.File]::Exists($inputFullPath)
+            $destinationExistedBeforeAttack =
+                [IO.File]::Exists($destinationFullPath)
+            if (-not $sourceExistedBeforeAttack) {
+                throw [IO.FileNotFoundException]::new(
+                    "swap source does not exist",
+                    $inputFullPath
+                )
+            }
+            if (-not $destinationExistedBeforeAttack) {
+                throw [IO.FileNotFoundException]::new(
+                    "swap destination does not exist",
+                    $destinationFullPath
+                )
+            }
+
+            if ($BackupMode -ceq "None") {
+                if (-not [string]::IsNullOrEmpty($BackupPath)) {
+                    throw [ArgumentException]::new(
+                        "backup path was supplied while backup mode is None"
+                    )
+                }
+                # A bare PowerShell $null is coerced to String.Empty for this
+                # .NET string parameter. NullString is the explicit native
+                # null required to request no ReplaceFile backup.
+                $backupArgumentWasNativeNull = $true
+            }
+            else {
+                throw [ArgumentException]::new(
+                    "backup-producing swap fixtures are prohibited because " +
+                    "they can expose protected destination content"
+                )
+            }
+
+            $replaceInvoked = $true
+            [IO.File]::Replace(
+                $inputFullPath,
+                $destinationFullPath,
+                [NullString]::Value
+            )
+        }
+        default { throw [ArgumentException]::new("unknown operation") }
+    }
+}
+catch {
+    $exception = $_.Exception
+    $status = Get-MinerOpsNativeExceptionStatus `
+        -Operation $Operation -Exception $exception
+}
+
+$result = Get-ProbeMetadata -Status $status -Exception $exception
+Write-ProbeResult -Value $result
+exit (Get-MinerOpsNativeStatusExitCode -Status $status)

agents/windows/tests/MinerOpsNativeHarnessSupport.ps1

@@ -0,0 +1,475 @@
+$ErrorActionPreference = "Stop"
+
+function Get-MinerOpsNativeGetItemState {
+    $effective = Get-Command Get-Item -ErrorAction Stop
+    $function = if (
+        $effective.CommandType -eq
+            [Management.Automation.CommandTypes]::Function
+    ) {
+        $effective
+    }
+    else {
+        $null
+    }
+
+    return [pscustomobject]@{
+        FunctionExisted = $null -ne $function
+        FunctionScriptBlock = if ($null -ne $function) {
+            $function.ScriptBlock
+        }
+        else {
+            $null
+        }
+        EffectiveCommandType = [string]$effective.CommandType
+        EffectiveName = [string]$effective.Name
+        EffectiveModuleName = [string]$effective.ModuleName
+        EffectiveSource = [string]$effective.Source
+        EffectiveDefinition = [string]$effective.Definition
+    }
+}
+
+function Assert-MinerOpsNativeGetItemState {
+    param(
+        [Parameter(Mandatory = $true)]$Expected,
+        [string]$Context = "Get-Item state check"
+    )
+
+    $actual = Get-MinerOpsNativeGetItemState
+    if ([bool]$actual.FunctionExisted -ne [bool]$Expected.FunctionExisted) {
+        throw "$Context changed the global Get-Item function's existence."
+    }
+    if (
+        [bool]$Expected.FunctionExisted -and
+        (
+            -not [object]::ReferenceEquals(
+                $actual.FunctionScriptBlock,
+                $Expected.FunctionScriptBlock
+            ) -or
+            $actual.FunctionScriptBlock.ToString() -cne
+                $Expected.FunctionScriptBlock.ToString()
+        )
+    ) {
+        throw "$Context changed the global Get-Item function's ScriptBlock."
+    }
+    foreach ($property in @(
+        "EffectiveCommandType",
+        "EffectiveName",
+        "EffectiveModuleName",
+        "EffectiveSource",
+        "EffectiveDefinition"
+    )) {
+        if ([string]$actual.$property -cne [string]$Expected.$property) {
+            throw "$Context changed effective Get-Item resolution ($property)."
+        }
+    }
+}
+
+function Invoke-MinerOpsNativeGetItemTrace {
+    param([Parameter(Mandatory = $true)][scriptblock]$Action)
+
+    $before = Get-MinerOpsNativeGetItemState
+    $observedGetItemPaths = [System.Collections.Generic.List[string]]::new()
+    $invokeWithLocalHook = {
+        param(
+            [Parameter(Mandatory = $true)][scriptblock]$TraceAction,
+            [Parameter(Mandatory = $true)]$ObservedPaths
+        )
+
+        # Use a child scope because PowerShell can continue resolving a
+        # removed active function until the scope that defined it exits.
+        # Exiting this child scope makes cleanup deterministic before the
+        # caller-state assertion runs.
+        Set-Item -LiteralPath "Function:\local:Get-Item" -Value {
+                [CmdletBinding(DefaultParameterSetName = "Path")]
+                param(
+                    [Parameter(Position = 0, ParameterSetName = "Path")]
+                    [string[]]$Path,
+                    [Parameter(Mandatory = $true, ParameterSetName = "LiteralPath")]
+                    [Alias("PSPath")]
+                    [string[]]$LiteralPath,
+                    [switch]$Force
+                )
+
+                $observed = if ($PSCmdlet.ParameterSetName -eq "LiteralPath") {
+                    $LiteralPath
+                }
+                else {
+                    $Path
+                }
+                foreach ($candidate in @($observed)) {
+                    $ObservedPaths.Add([string]$candidate)
+                }
+                Microsoft.PowerShell.Management\Get-Item @PSBoundParameters
+            }
+        try {
+            & $TraceAction | Out-Null
+        }
+        finally {
+            Remove-Item -LiteralPath "Function:\local:Get-Item" -Force `
+                -ErrorAction SilentlyContinue
+        }
+    }
+    try {
+        & $invokeWithLocalHook $Action $observedGetItemPaths
+        return @($observedGetItemPaths)
+    }
+    finally {
+        Assert-MinerOpsNativeGetItemState -Expected $before `
+            -Context "Invoke-MinerOpsNativeGetItemTrace cleanup"
+    }
+}
+
+function Get-MinerOpsNativeWin32Error {
+    param([Parameter(Mandatory = $true)][int]$HResult)
+
+    # HRESULT_FROM_WIN32 values have the 0x8007 facility prefix. Do not treat
+    # the low word of an arbitrary CLR or PowerShell HRESULT as a Win32 error.
+    $unsignedHResult = [int64]$HResult -band 4294967295L
+    if (
+        ($unsignedHResult -band 4294901760L) -eq 2147942400L
+    ) {
+        return [int]($unsignedHResult -band 65535L)
+    }
+
+    return $null
+}
+
+function Get-MinerOpsNativeExceptionDetails {
+    param([Parameter(Mandatory = $true)][Exception]$Exception)
+
+    $maximumDepth = 32
+    $visited = [System.Collections.Generic.List[Exception]]::new()
+    $chainTypes = [System.Collections.Generic.List[string]]::new()
+    $current = $Exception
+    $leaf = $Exception
+    $truncated = $false
+
+    for ($depth = 0; $depth -lt $maximumDepth; $depth++) {
+        if ($null -eq $current) { break }
+
+        $alreadyVisited = $false
+        foreach ($candidate in $visited) {
+            if ([object]::ReferenceEquals($candidate, $current)) {
+                $alreadyVisited = $true
+                break
+            }
+        }
+        if ($alreadyVisited) {
+            $truncated = $true
+            break
+        }
+
+        $visited.Add($current)
+        $chainTypes.Add($current.GetType().FullName)
+        $leaf = $current
+        $current = $current.InnerException
+    }
+    if ($null -ne $current) {
+        $truncated = $true
+    }
+
+    $nativeError = Get-MinerOpsNativeWin32Error -HResult ([int]$leaf.HResult)
+    return [pscustomobject]@{
+        OuterException = $Exception
+        OuterExceptionType = $Exception.GetType().FullName
+        OuterHResult = [int]$Exception.HResult
+        LeafException = $leaf
+        LeafExceptionType = $leaf.GetType().FullName
+        LeafHResult = [int]$leaf.HResult
+        NativeError = $nativeError
+        ExceptionChainTypes = @($chainTypes)
+        ExceptionChainTruncated = $truncated
+    }
+}
+
+function Get-MinerOpsNativeExceptionStatus {
+    param(
+        [Parameter(Mandatory = $true)][string]$Operation,
+        [Parameter(Mandatory = $true)][Exception]$Exception
+    )
+
+    $details = Get-MinerOpsNativeExceptionDetails -Exception $Exception
+    $meaningfulException = $details.LeafException
+    $nativeError = $details.NativeError
+
+    if ($details.ExceptionChainTruncated) {
+        return "unexpected_failure"
+    }
+
+    if ($meaningfulException -is [UnauthorizedAccessException]) {
+        return "security_denied"
+    }
+
+    if (
+        $meaningfulException -is [ArgumentException] -or
+        $meaningfulException -is [IO.FileNotFoundException] -or
+        $meaningfulException -is [IO.DirectoryNotFoundException] -or
+        $meaningfulException -is [IO.DriveNotFoundException] -or
+        $meaningfulException -is [IO.PathTooLongException] -or
+        $meaningfulException -is [NotSupportedException]
+    ) {
+        return "fixture_error"
+    }
+
+    if (
+        $meaningfulException -is [IO.IOException] -and
+        $null -ne $nativeError
+    ) {
+        if ([int]$nativeError -eq 5) {
+            return "security_denied"
+        }
+
+        if ($Operation -ceq "swap" -and [int]$nativeError -eq 1175) {
+            # ReplaceFileW documents ERROR_UNABLE_TO_REMOVE_REPLACED as
+            # retaining both original names. The caller must still prove every
+            # security and identity postcondition before treating this as a
+            # passing denial.
+            return "security_denied_requires_postconditions"
+        }
+
+        if ([int]$nativeError -eq 17) {
+            # ReplaceFile requires source and destination on the same volume.
+            # This says nothing about the protected target's access boundary.
+            return "api_precondition_failure"
+        }
+    }
+
+    return "unexpected_failure"
+}
+
+function Get-MinerOpsNativeStatusExitCode {
+    param([Parameter(Mandatory = $true)][string]$Status)
+
+    switch ($Status) {
+        "succeeded" { return 0 }
+        "security_denied" { return 5 }
+        "fixture_error" { return 6 }
+        "unexpected_failure" { return 7 }
+        "security_denied_requires_postconditions" { return 8 }
+        "api_precondition_failure" { return 9 }
+        default { throw "Unknown standard-user helper status '$Status'." }
+    }
+}
+
+function Get-MinerOpsNativeSwapFixtureStatus {
+    param([Parameter(Mandatory = $true)]$Fixture)
+
+    $fixtureFailures = [System.Collections.Generic.List[string]]::new()
+    $requiredFixtureChecks = [ordered]@{
+        SourceExists = "source is missing"
+        TargetExists = "target is missing"
+        PathsDistinct = "source and target are the same path"
+        SourceCreatedByStandardUser = `
+            "source was not created by the standard-user process"
+        SourceOwnedByStandardUser = `
+            "standard user does not own the source"
+        SourceReadable = "standard user cannot read the source"
+        SourceModifiable = "standard user cannot modify the source"
+        SourceRenameable = "standard user cannot rename the source"
+        SourceDeleteCapable = `
+            "standard user does not have required delete access to the source"
+        SourceReplaceAccessVerified = `
+            "standard user lacks source access required by ReplaceFile"
+        TargetAclTrusted = "target ACL was not trusted before attack"
+        TargetOwnerTrusted = "target owner was not trusted before attack"
+        TargetIdentityCaptured = "target identity was not captured"
+        SourceIdentityCaptured = "source identity was not captured"
+        FileIdentitiesDistinct = "source and target resolve to the same file"
+        BackupArgumentValid = "backup argument is invalid"
+        BackupPathsDistinct = `
+            "backup path is not distinct from source and target"
+        BackupExpectedStateVerified = `
+            "backup pre-attack state was not verified"
+        BackupConfidentialitySafe = `
+            "backup choice could expose protected target content"
+    }
+    foreach ($entry in $requiredFixtureChecks.GetEnumerator()) {
+        if (-not [bool]$Fixture.($entry.Key)) {
+            $fixtureFailures.Add([string]$entry.Value)
+        }
+    }
+    if ($fixtureFailures.Count -gt 0) {
+        return [pscustomobject]@{
+            Status = "fixture_error"
+            Failures = @($fixtureFailures)
+        }
+    }
+
+    $apiFailures = [System.Collections.Generic.List[string]]::new()
+    if (-not [bool]$Fixture.SameVolume) {
+        $apiFailures.Add("source, target, and backup are not on one volume")
+    }
+    if (-not [bool]$Fixture.NtfsVolume) {
+        $apiFailures.Add("attack fixture is not on NTFS")
+    }
+    if ($apiFailures.Count -gt 0) {
+        return [pscustomobject]@{
+            Status = "api_precondition_failure"
+            Failures = @($apiFailures)
+        }
+    }
+
+    return [pscustomobject]@{
+        Status = "ready"
+        Failures = @()
+    }
+}
+
+function Assert-MinerOpsNativeSwapFixtureReady {
+    param([Parameter(Mandatory = $true)]$Fixture)
+
+    $classification = Get-MinerOpsNativeSwapFixtureStatus -Fixture $Fixture
+    switch ([string]$classification.Status) {
+        "ready" { return }
+        "fixture_error" {
+            throw "Standard-user swap fixture is invalid: " +
+                "$(@($classification.Failures) -join '; ')."
+        }
+        "api_precondition_failure" {
+            throw "Standard-user swap has an API precondition failure: " +
+                "$(@($classification.Failures) -join '; ')."
+        }
+        default {
+            throw "Standard-user swap fixture classification failed closed."
+        }
+    }
+}
+
+function Assert-MinerOpsNativeSwapSecurityOutcome {
+    param(
+        [Parameter(Mandatory = $true)]$Result,
+        [Parameter(Mandatory = $true)]$Postconditions
+    )
+
+    if ([string]$Result.operation -cne "swap") {
+        throw "Swap result recorded the wrong operation."
+    }
+    $detail = "outer=$([string]$Result.outer_exception_type), " +
+        "outer_hresult=$([string]$Result.outer_hresult), " +
+        "leaf=$([string]$Result.leaf_exception_type), " +
+        "leaf_hresult=$([string]$Result.leaf_hresult), " +
+        "native=$([string]$Result.native_error), " +
+        "chain=$(@($Result.exception_chain_types) -join ' -> ')"
+    switch ([string]$Result.status) {
+        "succeeded" {
+            if (-not [bool]$Result.replace_invoked) {
+                throw "Successful swap result did not record File.Replace invocation."
+            }
+            throw "Standard user completed the protected replacement swap."
+        }
+        "security_denied" { }
+        "security_denied_requires_postconditions" { }
+        "fixture_error" {
+            throw "Standard-user swap fixture was invalid ($detail)."
+        }
+        "api_precondition_failure" {
+            throw "Standard-user swap hit an unrelated API precondition ($detail)."
+        }
+        default {
+            throw "Standard-user swap failed unexpectedly ($detail)."
+        }
+    }
+    if (-not [bool]$Result.replace_invoked) {
+        throw "Standard-user swap did not reach System.IO.File.Replace."
+    }
+
+    $required = [ordered]@{
+        TargetExists = "protected target is missing"
+        TargetIdentityUnchanged = "protected target identity changed"
+        TargetContentUnchanged = "protected target content changed"
+        TargetAclTrusted = "protected target ACL is not trusted"
+        TargetAclUnchanged = "protected target ACL changed"
+        TargetOwnerTrusted = "protected target owner is not trusted"
+        TargetOwnerUnchanged = "protected target owner changed"
+        TargetSingleLink = "protected target is not single-link"
+        SourceExists = "attacker source is missing"
+        SourceIdentityUnchanged = "attacker source identity changed"
+        SourceContentUnchanged = "attacker source content changed"
+        AttackerSourceNotPromoted = "attacker source was promoted to authority"
+        TargetDeniedStandardUserRead = `
+            "protected content became readable by the standard user"
+        TargetDeniedStandardUserModify = `
+            "protected target became modifiable by the standard user"
+        TargetDeniedStandardUserDelete = `
+            "protected target became deletable by the standard user"
+        TargetDeniedStandardUserRename = `
+            "protected target became renameable by the standard user"
+        NoAttackerReadableBackup = `
+            "replacement exposed protected content through a backup"
+    }
+    $failures = [System.Collections.Generic.List[string]]::new()
+    foreach ($entry in $required.GetEnumerator()) {
+        if (-not [bool]$Postconditions.($entry.Key)) {
+            $failures.Add([string]$entry.Value)
+        }
+    }
+    if ($failures.Count -gt 0) {
+        throw "Swap security postconditions failed ($detail): " +
+            "$($failures -join '; ')."
+    }
+}
+
+function Get-MinerOpsNativeFileIdentity {
+    param([Parameter(Mandatory = $true)]$Stream)
+
+    if (-not ("MinerOpsNativeHarnessFileIdentity" -as [type])) {
+        Add-Type -TypeDefinition @'
+using System;
+using System.ComponentModel;
+using System.Runtime.InteropServices;
+using Microsoft.Win32.SafeHandles;
+
+public sealed class MinerOpsNativeHarnessFileIdentityResult
+{
+    public string Identity { get; set; }
+    public uint VolumeSerialNumber { get; set; }
+    public ulong FileIndex { get; set; }
+    public uint NumberOfLinks { get; set; }
+}
+
+public static class MinerOpsNativeHarnessFileIdentity
+{
+    [StructLayout(LayoutKind.Sequential)]
+    private struct ByHandleFileInformation
+    {
+        public uint FileAttributes;
+        public System.Runtime.InteropServices.ComTypes.FILETIME CreationTime;
+        public System.Runtime.InteropServices.ComTypes.FILETIME LastAccessTime;
+        public System.Runtime.InteropServices.ComTypes.FILETIME LastWriteTime;
+        public uint VolumeSerialNumber;
+        public uint FileSizeHigh;
+        public uint FileSizeLow;
+        public uint NumberOfLinks;
+        public uint FileIndexHigh;
+        public uint FileIndexLow;
+    }
+
+    [DllImport("kernel32.dll", SetLastError = true)]
+    private static extern bool GetFileInformationByHandle(
+        SafeFileHandle file, out ByHandleFileInformation information);
+
+    public static MinerOpsNativeHarnessFileIdentityResult Get(
+        SafeFileHandle file)
+    {
+        ByHandleFileInformation information;
+        if (!GetFileInformationByHandle(file, out information))
+            throw new Win32Exception(Marshal.GetLastWin32Error());
+        ulong fileIndex = ((ulong)information.FileIndexHigh << 32) |
+            information.FileIndexLow;
+        return new MinerOpsNativeHarnessFileIdentityResult {
+            Identity = String.Format(
+                "{0:X8}:{1:X8}{2:X8}",
+                information.VolumeSerialNumber,
+                information.FileIndexHigh,
+                information.FileIndexLow),
+            VolumeSerialNumber = information.VolumeSerialNumber,
+            FileIndex = fileIndex,
+            NumberOfLinks = information.NumberOfLinks
+        };
+    }
+}
+'@
+    }
+
+    return [MinerOpsNativeHarnessFileIdentity]::Get($Stream.SafeFileHandle)
+}

agents/windows/tests/Test-MinerOpsBootEventParser.ps1

@@ -0,0 +1,335 @@
+$ErrorActionPreference = "Stop"
+
+$root = Split-Path $PSScriptRoot -Parent
+$scriptPath = Join-Path $root "Upgrade-MinerOpsAgentCredential.ps1"
+. $scriptPath
+
+$script:Passed = 0
+$script:BootEventRecords = @()
+$script:ToXmlCalls = 0
+
+function Assert-True {
+    param(
+        [Parameter(Mandatory)][bool]$Condition,
+        [Parameter(Mandatory)][string]$Message
+    )
+    if (-not $Condition) { throw $Message }
+}
+
+function Assert-Throws {
+    param(
+        [Parameter(Mandatory)][scriptblock]$Action,
+        [string]$Pattern = ""
+    )
+    try { & $Action | Out-Null }
+    catch {
+        if ($Pattern -and $_.Exception.Message -notmatch $Pattern) {
+            throw "Expected error '$Pattern', got '$($_.Exception.Message)'."
+        }
+        return
+    }
+    throw "Expected action to fail."
+}
+
+function Invoke-ParserTest {
+    param(
+        [Parameter(Mandatory)][string]$Name,
+        [Parameter(Mandatory)][scriptblock]$Action
+    )
+    & $Action
+    $script:Passed++
+    Write-Host "PASS: $Name"
+}
+
+function New-TestKernelBootXml {
+    param(
+        [string]$Namespace =
+            "http://schemas.microsoft.com/win/2004/08/events/event",
+        [string]$BootTypeContent = '<Data Name="BootType">0</Data>',
+        [switch]$OmitSystem,
+        [switch]$OmitEventData,
+        [switch]$DuplicateEventData
+    )
+
+    $system = if ($OmitSystem) { "" } else {
+@"
+  <System>
+    <Provider Name="Microsoft-Windows-Kernel-Boot" />
+    <EventID>27</EventID>
+    <Version>1</Version>
+    <Level>4</Level>
+    <Task>33</Task>
+    <Opcode>0</Opcode>
+    <EventRecordID>42</EventRecordID>
+    <Channel>System</Channel>
+  </System>
+"@
+    }
+    $eventData = if ($OmitEventData) { "" } else {
+        "  <EventData>$BootTypeContent</EventData>"
+    }
+    if ($DuplicateEventData) {
+        $eventData += "`n  <EventData>$BootTypeContent</EventData>"
+    }
+    return "<Event xmlns=`"$Namespace`">`n$system$eventData`n</Event>"
+}
+
+function New-TestEventRecord {
+    param(
+        [AllowNull()]$ProviderName = "Microsoft-Windows-Kernel-Boot",
+        [AllowNull()]$Id = [int]27,
+        [AllowNull()]$RecordId = [long]42,
+        [AllowNull()]$Version = [byte]1,
+        [AllowNull()]$Xml = (New-TestKernelBootXml)
+    )
+
+    $record = [pscustomobject]@{
+        ProviderName = $ProviderName
+        Id = $Id
+        RecordId = $RecordId
+        Version = $Version
+        XmlPayload = $Xml
+    }
+    $record | Add-Member -MemberType ScriptMethod -Name ToXml -Value {
+        $script:ToXmlCalls++
+        return $this.XmlPayload
+    }
+    return $record
+}
+
+function Get-WinEvent {
+    param($FilterHashtable, $ErrorAction)
+    return $script:BootEventRecords
+}
+
+Invoke-ParserTest "conventional namespaced Event XML and typed metadata parse" {
+    $parsed = ConvertFrom-MinerOpsKernelBootEventRecord `
+        -EventRecord (New-TestEventRecord)
+    Assert-True ($parsed.ProviderName -ceq
+        "Microsoft-Windows-Kernel-Boot") "Typed provider was not retained."
+    Assert-True ($parsed.EventId -is [int] -and $parsed.EventId -eq 27) `
+        "Typed event ID was not retained."
+    Assert-True ($parsed.RecordId -is [long] -and $parsed.RecordId -eq 42) `
+        "Typed record ID was not retained."
+    Assert-True ($parsed.Version -is [byte] -and $parsed.Version -eq 1) `
+        "Typed event version was not retained."
+    Assert-True ($parsed.BootType -is [UInt32] -and $parsed.BootType -eq 0) `
+        "BootType payload was not parsed."
+}
+
+Invoke-ParserTest "supported event version zero parses" {
+    $parsed = ConvertFrom-MinerOpsKernelBootEventRecord `
+        -EventRecord (New-TestEventRecord -Version ([byte]0))
+    Assert-True ($parsed.Version -eq 0) "Version zero was not accepted."
+}
+
+Invoke-ParserTest "production Get-WinEvent path invokes ToXml parser" {
+    $script:ToXmlCalls = 0
+    $script:BootEventRecords = @(
+        New-TestEventRecord -RecordId ([long]43)
+    )
+    $identifier = Get-MinerOpsBootIdentifier
+    Assert-True ($identifier -ceq
+        "windows-full-boot-event-v1:000000000000002b") `
+        "Production event path returned the wrong identifier."
+    Assert-True ($script:ToXmlCalls -eq 1) `
+        "Production event path did not invoke ToXml exactly once."
+}
+
+Invoke-ParserTest "typed metadata is authoritative over XML scalar metadata" {
+    $xml = (New-TestKernelBootXml).Replace(
+        "<EventID>27</EventID>", "<EventID>999</EventID>"
+    ).Replace(
+        "<EventRecordID>42</EventRecordID>",
+        "<EventRecordID>999</EventRecordID>"
+    )
+    $parsed = ConvertFrom-MinerOpsKernelBootEventRecord `
+        -EventRecord (New-TestEventRecord -Xml $xml)
+    Assert-True ($parsed.EventId -eq 27 -and $parsed.RecordId -eq 42) `
+        "XML scalar metadata overrode typed EventRecord properties."
+}
+
+Invoke-ParserTest "null typed RecordId fails closed" {
+    Assert-Throws {
+        ConvertFrom-MinerOpsKernelBootEventRecord `
+            -EventRecord (New-TestEventRecord -RecordId $null)
+    } "metadata"
+}
+
+Invoke-ParserTest "wrong typed provider fails closed" {
+    Assert-Throws {
+        ConvertFrom-MinerOpsKernelBootEventRecord -EventRecord `
+            (New-TestEventRecord -ProviderName "Unexpected-Provider")
+    } "metadata"
+}
+
+Invoke-ParserTest "wrong typed event ID fails closed" {
+    Assert-Throws {
+        ConvertFrom-MinerOpsKernelBootEventRecord `
+            -EventRecord (New-TestEventRecord -Id ([int]28))
+    } "metadata"
+}
+
+Invoke-ParserTest "wrong RecordId type fails closed" {
+    Assert-Throws {
+        ConvertFrom-MinerOpsKernelBootEventRecord `
+            -EventRecord (New-TestEventRecord -RecordId ([UInt64]42))
+    } "metadata"
+}
+
+Invoke-ParserTest "null event version fails closed" {
+    Assert-Throws {
+        ConvertFrom-MinerOpsKernelBootEventRecord `
+            -EventRecord (New-TestEventRecord -Version $null)
+    } "metadata"
+}
+
+Invoke-ParserTest "unsupported event version fails closed" {
+    Assert-Throws {
+        ConvertFrom-MinerOpsKernelBootEventRecord `
+            -EventRecord (New-TestEventRecord -Version ([byte]2))
+    } "unsupported"
+}
+
+Invoke-ParserTest "unexpected Event XML namespace fails closed" {
+    Assert-Throws {
+        ConvertFrom-MinerOpsKernelBootEventRecord -EventRecord `
+            (New-TestEventRecord -Xml (New-TestKernelBootXml `
+                -Namespace "urn:unexpected"))
+    } "root"
+}
+
+Invoke-ParserTest "malformed Event XML fails closed" {
+    Assert-Throws {
+        ConvertFrom-MinerOpsKernelBootEventRecord `
+            -EventRecord (New-TestEventRecord -Xml "<Event>")
+    } "malformed"
+}
+
+Invoke-ParserTest "missing System element fails closed" {
+    Assert-Throws {
+        ConvertFrom-MinerOpsKernelBootEventRecord -EventRecord `
+            (New-TestEventRecord -Xml (New-TestKernelBootXml -OmitSystem))
+    } "schema"
+}
+
+Invoke-ParserTest "missing EventData fails closed" {
+    Assert-Throws {
+        ConvertFrom-MinerOpsKernelBootEventRecord -EventRecord `
+            (New-TestEventRecord -Xml (New-TestKernelBootXml -OmitEventData))
+    } "schema"
+}
+
+Invoke-ParserTest "duplicated EventData fails closed" {
+    Assert-Throws {
+        ConvertFrom-MinerOpsKernelBootEventRecord -EventRecord `
+            (New-TestEventRecord -Xml `
+                (New-TestKernelBootXml -DuplicateEventData))
+    } "schema"
+}
+
+Invoke-ParserTest "missing BootType fails closed" {
+    Assert-Throws {
+        ConvertFrom-MinerOpsKernelBootEventRecord -EventRecord `
+            (New-TestEventRecord -Xml (New-TestKernelBootXml `
+                -BootTypeContent '<Data Name="LoadOptions"></Data>'))
+    } "schema"
+}
+
+Invoke-ParserTest "duplicate BootType fails closed" {
+    $payload = '<Data Name="BootType">0</Data>' +
+        '<Data Name="BootType">0</Data>'
+    Assert-Throws {
+        ConvertFrom-MinerOpsKernelBootEventRecord -EventRecord `
+            (New-TestEventRecord -Xml (New-TestKernelBootXml `
+                -BootTypeContent $payload))
+    } "ambiguous"
+}
+
+Invoke-ParserTest "nonnumeric BootType fails closed" {
+    Assert-Throws {
+        ConvertFrom-MinerOpsKernelBootEventRecord -EventRecord `
+            (New-TestEventRecord -Xml (New-TestKernelBootXml `
+                -BootTypeContent '<Data Name="BootType">full</Data>'))
+    } "canonical"
+}
+
+Invoke-ParserTest "noncanonical BootType fails closed" {
+    Assert-Throws {
+        ConvertFrom-MinerOpsKernelBootEventRecord -EventRecord `
+            (New-TestEventRecord -Xml (New-TestKernelBootXml `
+                -BootTypeContent '<Data Name="BootType">00</Data>'))
+    } "canonical"
+}
+
+Invoke-ParserTest "structured BootType content fails closed" {
+    Assert-Throws {
+        ConvertFrom-MinerOpsKernelBootEventRecord -EventRecord `
+            (New-TestEventRecord -Xml (New-TestKernelBootXml `
+                -BootTypeContent `
+                    '<Data Name="BootType"><Value>0</Value></Data>'))
+    } "schema"
+}
+
+Invoke-ParserTest "BootType outside UInt32 fails closed" {
+    Assert-Throws {
+        ConvertFrom-MinerOpsKernelBootEventRecord -EventRecord `
+            (New-TestEventRecord -Xml (New-TestKernelBootXml `
+                -BootTypeContent `
+                    '<Data Name="BootType">4294967296</Data>'))
+    } "invalid"
+}
+
+Invoke-ParserTest "nonzero BootType is not a full-boot anchor" {
+    $script:BootEventRecords = @(
+        New-TestEventRecord -Xml (New-TestKernelBootXml `
+            -BootTypeContent '<Data Name="BootType">1</Data>')
+    )
+    Assert-Throws { Get-MinerOpsBootIdentifier } "could not be verified"
+}
+
+Invoke-ParserTest "empty event query fails closed" {
+    $script:BootEventRecords = @()
+    Assert-Throws { Get-MinerOpsBootIdentifier } "could not be verified"
+}
+
+Invoke-ParserTest "duplicate qualifying record IDs fail closed" {
+    $script:BootEventRecords = @(
+        New-TestEventRecord -RecordId ([long]42)
+        New-TestEventRecord -RecordId ([long]43)
+        New-TestEventRecord -RecordId ([long]42)
+    )
+    Assert-Throws { Get-MinerOpsBootIdentifier } "could not be verified"
+}
+
+Invoke-ParserTest "equal stored and current anchors deny reset" {
+    Assert-Throws {
+        Assert-MinerOpsBootEpochChanged `
+            -StoredBootIdentifier "windows-full-boot-event-v1:000000000000002a" `
+            -CurrentBootIdentifier "windows-full-boot-event-v1:000000000000002a"
+    } "without a verified full Restart"
+}
+
+Invoke-ParserTest "strictly greater current anchor passes ordering" {
+    Assert-MinerOpsBootEpochChanged `
+        -StoredBootIdentifier "windows-full-boot-event-v1:000000000000002a" `
+        -CurrentBootIdentifier "windows-full-boot-event-v1:000000000000002b"
+}
+
+Invoke-ParserTest "smaller current anchor fails closed" {
+    Assert-Throws {
+        Assert-MinerOpsBootEpochChanged `
+            -StoredBootIdentifier "windows-full-boot-event-v1:000000000000002a" `
+            -CurrentBootIdentifier "windows-full-boot-event-v1:0000000000000029"
+    } "older than the"
+}
+
+Invoke-ParserTest "malformed stored anchor fails closed" {
+    Assert-Throws {
+        Assert-MinerOpsBootEpochChanged `
+            -StoredBootIdentifier "windows-full-boot-event-v1:not-a-record" `
+            -CurrentBootIdentifier "windows-full-boot-event-v1:000000000000002b"
+    } "canonical"
+}
+
+Write-Host "$script:Passed boot-event parser tests passed."

agents/windows/tests/Test-MinerOpsControl.ps1

@@ -0,0 +1,84 @@
+$ErrorActionPreference = "Stop"
+$script:config = [pscustomobject]@{ api3_account = "operator"; api3_password = "secret"; api3_port = 4433 }
+$script:calls = @()
+$script:outcomes = @()
+$script:outcomeIndex = 0
+
+function Read-AgentConfig { return $script:config }
+. (Join-Path (Split-Path $PSScriptRoot -Parent) "MinerOpsControl.ps1")
+
+function Invoke-MinerOpsControlApi3Command {
+    param([string]$IpAddress, [string]$Command, [object]$Param = $null)
+    $script:calls += [pscustomobject]@{ command = $Command; param = $Param }
+    $outcome = $script:outcomes[$script:outcomeIndex]
+    $script:outcomeIndex += 1
+    if ($outcome -is [System.Exception]) { throw $outcome }
+    return $outcome
+}
+
+function Assert-Equal($Actual, $Expected, [string]$Message) {
+    if ($Actual -ne $Expected) { throw "$Message. Expected '$Expected', got '$Actual'." }
+}
+function Reset-Harness([object[]]$Outcomes) {
+    $script:calls = @()
+    $script:outcomes = @($Outcomes)
+    $script:outcomeIndex = 0
+}
+function Response([string]$Mode = "") {
+    return @{ response = @{ code = 0; msg = @{ "power-mode" = $Mode } } }
+}
+
+$payload = @{ action = "performance_mode"; requested_value = "normal"; ip_address = "192.0.2.1" }
+
+$script:config = [pscustomobject]@{ api3_account = ""; api3_password = ""; api3_port = 4433 }
+Reset-Harness @()
+$result = Run-MinerControlCommand -Payload $payload
+Assert-Equal $result.failure_code "credentials_missing" "Missing credentials code"
+Assert-Equal $script:calls.Count 0 "Missing credentials must not contact API3"
+
+$script:config = [pscustomobject]@{ api3_account = "operator"; api3_password = "secret"; api3_port = 4433 }
+Reset-Harness @((Response), (Response "normal"))
+$result = Run-MinerControlCommand -Payload $payload
+Assert-Equal $result.verification_status "confirmed" "Performance confirmation"
+Assert-Equal @($script:calls | Where-Object command -Like "set.*").Count 1 "Exactly one write"
+
+Reset-Harness @((Response), (Response "low"), (Response "low"), (Response "low"))
+$result = Run-MinerControlCommand -Payload $payload
+Assert-Equal $result.verification_status "verification_failed" "Contradictory mode"
+Assert-Equal $script:calls.Count 4 "One write and three bounded reads"
+
+Reset-Harness @((Response), (Response), (Response), (Response))
+$result = Run-MinerControlCommand -Payload $payload
+Assert-Equal $result.verification_status "unconfirmed" "Ambiguous reads"
+
+Reset-Harness @((Response), [System.Exception]::new("unknown_command"))
+$result = Run-MinerControlCommand -Payload $payload
+Assert-Equal $result.verification_status "unavailable" "Unavailable read path"
+
+foreach ($action in @("suspend", "resume")) {
+    Reset-Harness @((Response))
+    $result = Run-MinerControlCommand -Payload @{
+        action = $action; requested_value = $null; ip_address = "192.0.2.1"
+    }
+    Assert-Equal $result.command_accepted $true "$action accepted"
+    Assert-Equal $result.verification_status "unconfirmed" "$action remains unconfirmed"
+    Assert-Equal $result.observed_service_state $null "$action has no invented state"
+    Assert-Equal @($script:calls | Where-Object command -Like "set.*").Count 1 "$action one write"
+}
+
+Reset-Harness @([System.Exception]::new("vendor response included secret"))
+$result = Run-MinerControlCommand -Payload @{
+    action = "suspend"; requested_value = $null; ip_address = "192.0.2.1"
+}
+Assert-Equal $result.failure_code "write_rejected" "Write rejection is sanitized"
+$json = $result | ConvertTo-Json -Compress
+if ($json -match "vendor|secret|192\\.0\\.2\\.1") { throw "Typed result leaked raw data" }
+
+Reset-Harness @()
+$result = Run-MinerControlCommand -Payload @{
+    action = "performance_mode"; requested_value = "turbo"; ip_address = "192.0.2.1"
+}
+Assert-Equal $result.failure_code "invalid_mode" "Invalid mode code"
+Assert-Equal $script:calls.Count 0 "Invalid mode must not contact API3"
+
+Write-Host "MinerOps typed Agent control tests passed."

agents/windows/tests/Test-MinerOpsEnrollment.ps1

@@ -0,0 +1,265 @@
+$ErrorActionPreference = "Stop"
+
+$root = Split-Path $PSScriptRoot -Parent
+$bootstrap = Join-Path $root "Enroll-MinerOpsAgent.ps1"
+
+$tokens = $null
+$parseErrors = $null
+
+[System.Management.Automation.Language.Parser]::ParseFile(
+    $bootstrap,
+    [ref] $tokens,
+    [ref] $parseErrors
+) | Out-Null
+
+if ($parseErrors.Count -gt 0) {
+    throw "Enroll-MinerOpsAgent.ps1 parser errors: $($parseErrors.Message -join '; ')"
+}
+
+$source = Get-Content -LiteralPath $bootstrap -Raw
+
+function Assert-SourceContains {
+    param(
+        [Parameter(Mandatory)][string] $Pattern,
+        [Parameter(Mandatory)][string] $Message
+    )
+
+    if ($source -notmatch $Pattern) {
+        throw $Message
+    }
+}
+
+Assert-SourceContains 'enrollment\.json' `
+    "Bootstrap enrollment file is not explicit."
+
+Assert-SourceContains 'workflow\s*-ne\s*"new_agent"' `
+    "New-Agent bootstrap does not reject transition packages."
+
+Assert-SourceContains '/api/agent/enroll' `
+    "Bootstrap does not use the secure enrollment endpoint."
+
+Assert-SourceContains 'Read-Host[\s\S]*-AsSecureString' `
+    "API3 password is not prompted as a SecureString."
+
+Assert-SourceContains 'agent-config\.json\.pending' `
+    "Atomic pending config path is missing."
+
+Assert-SourceContains 'agent-config\.recovery\.json' `
+    "Post-redemption credential recovery path is missing."
+
+Assert-SourceContains 'Open-MinerOpsEnrollmentCredentialFileCreateNew' `
+    "Handle-based credential creation is missing."
+
+Assert-SourceContains 'FileMode\]::CreateNew' `
+    "Credential files are not created with fail-if-present semantics."
+
+Assert-SourceContains 'FileShare\]::None' `
+    "Credential files are not held exclusively while being created."
+
+Assert-SourceContains 'Flush\(\$true\)' `
+    "Credential writes are not durably flushed through the trusted handle."
+
+Assert-SourceContains 'GetNumberOfLinks' `
+    "Enrollment does not reject hard-linked credential targets."
+
+Assert-SourceContains 'S-1-5-18' `
+    "SYSTEM ACL entry is missing."
+
+Assert-SourceContains 'S-1-5-32-544' `
+    "Administrators ACL entry is missing."
+
+Assert-SourceContains 'SetOwner\(\$administrators\)' `
+    "Stable Administrators ownership is missing from credential ACLs."
+
+Assert-SourceContains '\[IO\.File\]::Move\(\$PendingConfigPath, \$ConfigPath\)' `
+    "Atomic final config move is missing."
+
+Assert-SourceContains 'Assert-MinerOpsEnrollmentDirectory' `
+    "Enrollment does not revalidate the directory trust boundary."
+
+Assert-SourceContains 'minerops-filesystem-trust\.blocked-' `
+    "Enrollment directory repair lacks an external durable trust blocker."
+
+Assert-SourceContains 'ApproveFilesystemTrustResetAfterReboot' `
+    "Enrollment lacks an explicit post-reboot trust-reset gate."
+
+Assert-SourceContains 'windows-full-boot-event-v1:' `
+    "Enrollment blockers do not use canonical full-kernel-boot records."
+
+if ($source -match 'LastBootUpTime') {
+    throw "Enrollment must not use a wall-clock boot timestamp."
+}
+
+if ($source -match 'Remove-MinerOpsEnrollmentTrustBlocker') {
+    throw "Enrollment must not have independent trust-blocker deletion authority."
+}
+
+Assert-SourceContains 'Enrollment cannot clear an existing filesystem trust blocker' `
+    "Enrollment does not fail closed on retained filesystem trust blockers."
+
+Assert-SourceContains 'Assert-MinerOpsEnrollmentTrustedAncestors' `
+    "Enrollment does not validate ancestor namespace protection."
+
+foreach ($functionName in @(
+    "Assert-MinerOpsEnrollmentNoReparsePath",
+    "Assert-MinerOpsEnrollmentTrustedAncestors"
+)) {
+    $functionSource = [regex]::Match(
+        $source,
+        "(?s)function $functionName \{.*?\n\}"
+    ).Value
+    if ([string]::IsNullOrWhiteSpace($functionSource)) {
+        throw "$functionName source was not found."
+    }
+    if ($functionSource -notmatch '\$current\s*=\s*\$root') {
+        throw "$functionName does not preserve the filesystem root."
+    }
+    if ($functionSource -notmatch '\$fullPath\.Equals\(\s*\$root') {
+        throw "$functionName does not protect a root-valued full path from trimming."
+    }
+    if ($functionSource -match '\$root\.TrimEnd\(') {
+        throw "$functionName converts a root-qualified path to drive-relative form."
+    }
+    if ($functionSource -match 'GetFullPath\(\$Path\)\.TrimEnd\(') {
+        throw "$functionName trims the filesystem root before identifying it."
+    }
+    if ($functionName -eq "Assert-MinerOpsEnrollmentTrustedAncestors" -and
+        $functionSource -notmatch '\$parent\.Equals\(\s*\$root') {
+        throw "$functionName does not protect a root-valued parent from trimming."
+    }
+}
+
+Assert-SourceContains 'Open-MinerOpsEnrollmentDirectoryLock' `
+    "Enrollment does not lock an insecure target during repair."
+
+Assert-SourceContains 'DirectoryInfo\(\$staging\)' `
+    "Enrollment does not securely stage a new directory."
+
+Assert-SourceContains '& \$Installer' `
+    "Bootstrap does not hand off to the safe installer."
+
+Assert-SourceContains 'Start-ScheduledTask -TaskName "MinerOpsAgent"' `
+    "Fresh Agent startup is missing."
+
+Assert-SourceContains 'Remove-Item -LiteralPath \$EnrollmentPath' `
+    "Consumed extracted enrollment token is not removed."
+
+if ($source -match '\[IO\.File\]::WriteAllText\(\s*\$(Pending|Recovery)ConfigPath') {
+    throw "Enrollment must not truncate or adopt a credential pathname."
+}
+
+$createFunction = [regex]::Match(
+    $source,
+    '(?s)function Open-MinerOpsEnrollmentCredentialFileCreateNew \{.*?\n\}'
+).Value
+$createIndex = $createFunction.IndexOf(
+    'New-MinerOpsEnrollmentProtectedFileCreateNewStream'
+)
+$verifyIndex = $createFunction.IndexOf('Test-MinerOpsEnrollmentCredentialAcl')
+$linkIndex = $createFunction.IndexOf('Assert-MinerOpsEnrollmentSingleLinkStream')
+if (
+    $createIndex -lt 0 -or $verifyIndex -le $createIndex -or
+    $linkIndex -le $verifyIndex -or
+    $createFunction -match 'Set-MinerOpsEnrollmentStreamAcl'
+) {
+    throw "Enrollment credential creation must apply FileSecurity at CreateNew, verify it, then reject links before content."
+}
+
+$createStreamFunction = [regex]::Match(
+    $source,
+    '(?s)function New-MinerOpsEnrollmentProtectedFileCreateNewStream \{.*?\n\}'
+).Value
+foreach ($requiredCreateContract in @(
+    '\[IO\.FileStream\]::new',
+    'FileMode\]::CreateNew',
+    'FileSystemRights\]::WriteData',
+    'FileSystemRights\]::ReadPermissions',
+    'FileSystemRights\]::Synchronize',
+    'FileShare\]::None',
+    '\$Acl'
+)) {
+    if ($createStreamFunction -notmatch $requiredCreateContract) {
+        throw "Enrollment protected CreateNew stream contract is incomplete."
+    }
+}
+if ($createStreamFunction -match 'FullControl|SetAccessControl|Set-Acl') {
+    throw "Enrollment protected creation requests excess rights or repairs by path."
+}
+
+$repairFunction = [regex]::Match(
+    $source,
+    '(?s)function Protect-MinerOpsEnrollmentExistingConfig \{.*?\n\}'
+).Value
+foreach ($requiredRepairRight in @(
+    'ReadPermissions',
+    'ChangePermissions',
+    'TakeOwnership',
+    'Synchronize'
+)) {
+    if ($repairFunction -notmatch $requiredRepairRight) {
+        throw "Enrollment existing-config repair is missing $requiredRepairRight."
+    }
+}
+if ($repairFunction -match 'Set-Acl|FileAccess') {
+    throw "Enrollment existing-config repair must remain handle-bound."
+}
+
+$writeFunction = [regex]::Match(
+    $source,
+    '(?s)function Write-MinerOpsEnrollmentCredentialJson \{.*?\n\}'
+).Value
+if (
+    $writeFunction -notmatch 'Assert-MinerOpsEnrollmentSingleLinkStream' -or
+    $writeFunction -notmatch '\$Stream\.Write' -or
+    $writeFunction -notmatch '\$Stream\.Flush\(\$true\)'
+) {
+    throw "Enrollment credential content is not written and flushed through the verified handle."
+}
+
+$existingConfigGuard = $source.IndexOf(
+    'Test-Path -LiteralPath $ConfigPath'
+)
+
+$redeemCall = $source.IndexOf(
+    '"$HubUrl/api/agent/enroll"'
+)
+
+if (
+    $existingConfigGuard -lt 0 -or
+    $redeemCall -lt 0 -or
+    $existingConfigGuard -gt $redeemCall
+) {
+    throw "Existing Agent identity must be rejected before token redemption."
+}
+
+$configMove = $source.IndexOf(
+    '[IO.File]::Move($PendingConfigPath, $ConfigPath)'
+)
+
+$installerCall = $source.IndexOf(
+    '& $Installer'
+)
+
+if (
+    $configMove -lt 0 -or
+    $installerCall -lt 0 -or
+    $configMove -gt $installerCall
+) {
+    throw "Permanent Agent credentials must be persisted before installation."
+}
+
+foreach ($sensitiveVariable in @(
+    'EnrollmentToken',
+    'Api3PasswordPlain'
+)) {
+    if (
+        $source -match (
+            '(?im)Write-(Host|Output|Verbose|Information).*?\$' +
+            $sensitiveVariable
+        )
+    ) {
+        throw "$sensitiveVariable must not be written to output."
+    }
+}
+
+Write-Host "MinerOps enrollment bootstrap source safety tests passed."

agents/windows/tests/Test-MinerOpsInstaller.ps1

@@ -0,0 +1,286 @@
+$ErrorActionPreference = "Stop"
+$installer = Join-Path (Split-Path $PSScriptRoot -Parent) "install.ps1"
+$tokens = $null
+$parseErrors = $null
+[System.Management.Automation.Language.Parser]::ParseFile(
+    $installer, [ref]$tokens, [ref]$parseErrors
+) | Out-Null
+if ($parseErrors.Count -gt 0) {
+    throw "install.ps1 parser errors: $($parseErrors.Message -join '; ')"
+}
+
+$source = Get-Content -LiteralPath $installer -Raw
+function Assert-SourceContains {
+    param([Parameter(Mandatory)][string]$Pattern, [Parameter(Mandatory)][string]$Message)
+    if ($source -notmatch $Pattern) { throw $Message }
+}
+
+$runtimeMatch = [regex]::Match(
+    $source,
+    '(?s)\$RuntimeFiles\s*=\s*@\((?<files>.*?)\)'
+)
+if (!$runtimeMatch.Success) { throw "Runtime file allowlist was not found." }
+$runtimeFiles = $runtimeMatch.Groups["files"].Value
+foreach ($forbidden in @("agent-config.json", "agent-state.json", "logs", "backups")) {
+    if ($runtimeFiles -match [regex]::Escape($forbidden)) {
+        throw "$forbidden must not be a managed deployment target."
+    }
+}
+
+$preflight = $source.IndexOf('# Validate the complete source')
+$firstTargetChange = $source.IndexOf('New-Item -ItemType Directory')
+if ($preflight -lt 0 -or $preflight -gt $firstTargetChange) {
+    throw "Source preflight must happen before target changes."
+}
+
+Assert-SourceContains '\$existingTask\s*=\s*Get-MinerOpsScheduledTask' `
+    "Existing task preservation guard is missing."
+Assert-SourceContains 'Preserving existing Scheduled Task' `
+    "Existing task preservation is not explicit."
+Assert-SourceContains 'Test-MinerOpsInstallerShouldCreateMissingTask' `
+    "Missing-task trust-reset policy helper is absent."
+Assert-SourceContains 'Deferring missing per-user Scheduled Task' `
+    "Missing per-user task deferral is not explicit."
+Assert-SourceContains 'ExtraArguments\s*=\s*"-Limit 0 -TimeoutMs 8000"' `
+    "Fresh enrichment task arguments are missing."
+Assert-SourceContains 'Stop-MinerOpsScheduledTaskForUpgrade' `
+    "Bounded main Agent stop behavior is missing."
+Assert-SourceContains '\$mainTaskWasRunning' `
+    "Main Agent prior running state is not represented."
+Assert-SourceContains 'Copy-Item[^\r\n]*\(Join-Path \$Backup \$name\)' `
+    "Rollback does not restore managed files from backup."
+Assert-SourceContains 'Unregister-ScheduledTask' `
+    "Rollback does not remove tasks created by a failed install."
+Assert-SourceContains 'could not restart restored MinerOpsAgent' `
+    "Rollback restart failure is not surfaced."
+Assert-SourceContains 'Assert-MinerOpsInstallerTrustedAncestors' `
+    "Installer does not validate ancestor namespace protection."
+
+$taskDefinitionsStart = $source.IndexOf('$definitions = @(')
+$taskLoopStart = $source.IndexOf(
+    'foreach ($definition in $definitions)', $taskDefinitionsStart
+)
+if ($taskDefinitionsStart -lt 0 -or $taskLoopStart -le $taskDefinitionsStart) {
+    throw "Scheduled Task definitions or reconciliation loop were not found."
+}
+$taskDefinitions = $source.Substring(
+    $taskDefinitionsStart, $taskLoopStart - $taskDefinitionsStart
+)
+foreach ($policy in @(
+    @{ Name = "MinerOpsAgent"; Expected = '\$true' },
+    @{ Name = "MinerOpsAgentTray"; Expected = '\$false' },
+    @{ Name = "MinerOpsApi3Enrichment"; Expected = '\$true' },
+    @{ Name = "MinerOpsPoolPoller"; Expected = '\$true' }
+)) {
+    $definition = [regex]::Match(
+        $taskDefinitions,
+        ('(?s)@\{{.*?Name\s*=\s*"{0}".*?\}}' -f
+            [regex]::Escape($policy.Name))
+    ).Value
+    if ([string]::IsNullOrWhiteSpace($definition) -or
+        $definition -notmatch (
+            'CreateWhenMissingDuringTrustReset\s*=\s*{0}' -f
+                $policy.Expected
+        )) {
+        throw "Scheduled Task $($policy.Name) has the wrong trust-reset creation policy."
+    }
+}
+
+$taskLoopEnd = $source.IndexOf(
+    'if ($mainTaskWasRunning', $taskLoopStart
+)
+if ($taskLoopEnd -le $taskLoopStart) {
+    throw "Scheduled Task reconciliation loop end was not found."
+}
+$taskLoop = $source.Substring($taskLoopStart, $taskLoopEnd - $taskLoopStart)
+$preserveIndex = $taskLoop.IndexOf('$null -ne $existingTask')
+$deferIndex = $taskLoop.IndexOf(
+    'Test-MinerOpsInstallerShouldCreateMissingTask'
+)
+$actionIndex = $taskLoop.IndexOf('New-ScheduledTaskAction')
+if (
+    $preserveIndex -lt 0 -or
+    $deferIndex -le $preserveIndex -or
+    $actionIndex -le $deferIndex
+) {
+    throw "Existing-task preservation and missing-task deferral are ordered unsafely."
+}
+if ($taskLoop -match '80070534|No mapping between account names') {
+    throw "Missing per-user task handling must be policy-based, not HRESULT-based."
+}
+
+$taskPolicyFunction = [regex]::Match(
+    $source,
+    '(?s)function Test-MinerOpsInstallerShouldCreateMissingTask \{.*?\n\}'
+).Value
+if ([string]::IsNullOrWhiteSpace($taskPolicyFunction)) {
+    throw "Missing-task trust-reset policy function source was not found."
+}
+Invoke-Expression $taskPolicyFunction
+$trayPolicy = [pscustomobject]@{
+    CreateWhenMissingDuringTrustReset = $false
+}
+$systemTaskPolicy = [pscustomobject]@{
+    CreateWhenMissingDuringTrustReset = $true
+}
+if (Test-MinerOpsInstallerShouldCreateMissingTask `
+    -Definition $trayPolicy -TrustResetMode $true) {
+    throw "Trust reset would create a missing per-user tray task."
+}
+if (-not (Test-MinerOpsInstallerShouldCreateMissingTask `
+    -Definition $trayPolicy -TrustResetMode $false)) {
+    throw "Normal interactive installation would not repair a missing tray task."
+}
+if (-not (Test-MinerOpsInstallerShouldCreateMissingTask `
+    -Definition $systemTaskPolicy -TrustResetMode $true)) {
+    throw "Trust reset would skip a missing explicit-SYSTEM task."
+}
+$missingPolicyRejected = $false
+try {
+    [void](Test-MinerOpsInstallerShouldCreateMissingTask `
+        -Definition ([pscustomobject]@{}) -TrustResetMode $true)
+}
+catch {
+    $missingPolicyRejected = $_.Exception.Message -match
+        'trust-reset creation policy is missing'
+}
+if (-not $missingPolicyRejected) {
+    throw "Trust reset accepted a task definition without explicit policy."
+}
+
+foreach ($functionName in @(
+    "Assert-MinerOpsInstallerNoReparsePath",
+    "Assert-MinerOpsInstallerTrustedAncestors"
+)) {
+    $functionSource = [regex]::Match(
+        $source,
+        "(?s)function $functionName \{.*?\n\}"
+    ).Value
+    if ([string]::IsNullOrWhiteSpace($functionSource)) {
+        throw "$functionName source was not found."
+    }
+    if ($functionSource -notmatch '\$current\s*=\s*\$root') {
+        throw "$functionName does not preserve the filesystem root."
+    }
+    if ($functionSource -notmatch '\$fullPath\.Equals\(\s*\$root') {
+        throw "$functionName does not protect a root-valued full path from trimming."
+    }
+    if ($functionSource -match '\$root\.TrimEnd\(') {
+        throw "$functionName converts a root-qualified path to drive-relative form."
+    }
+    if ($functionSource -match 'GetFullPath\(\$Path\)\.TrimEnd\(') {
+        throw "$functionName trims the filesystem root before identifying it."
+    }
+    if ($functionName -eq "Assert-MinerOpsInstallerTrustedAncestors" -and
+        $functionSource -notmatch '\$parent\.Equals\(\s*\$root') {
+        throw "$functionName does not protect a root-valued parent from trimming."
+    }
+}
+
+Assert-SourceContains 'Open-MinerOpsInstallerDirectoryLock' `
+    "Installer does not lock an insecure target against replacement."
+Assert-SourceContains 'minerops-filesystem-trust\.blocked-' `
+    "Installer directory repair lacks an external durable provenance blocker."
+Assert-SourceContains 'ApproveFilesystemTrustResetAfterReboot' `
+    "Installer lacks an explicit post-reboot trust-reset gate."
+Assert-SourceContains 'DirectoryInfo\(\$staging\)' `
+    "Installer does not stage a protected new directory before publication."
+Assert-SourceContains 'Assert-MinerOpsInstallerDirectory' `
+    "Installer does not read back the final directory security invariant."
+Assert-SourceContains 'Protect-MinerOpsInstallerExistingConfig' `
+    "Installer does not contain the existing active-config ACL."
+Assert-SourceContains 'GetNumberOfLinks' `
+    "Installer does not reject hard-linked runtime, config, or backup files."
+Assert-SourceContains 'Assert-MinerOpsInstallerTrustedRuntimeFile' `
+    "Installer does not verify existing runtime rollback provenance."
+Assert-SourceContains 'Protect-MinerOpsInstallerRuntimeFile' `
+    "Installer does not secure and verify published runtime and rollback copies."
+Assert-SourceContains 'Pre-reset runtime is evidence, never rollback authority' `
+    "Installer trust reset can adopt pre-reset runtime as rollback authority."
+Assert-SourceContains 'parent-owned filesystem trust blocker remains' `
+    "Installer does not explicitly retain the parent-owned trust blocker."
+Assert-SourceContains 'windows-full-boot-event-v1:' `
+    "Installer blockers do not use canonical full-kernel-boot records."
+if ($source -match 'Remove-MinerOpsInstallerTrustBlocker|Remove-Item[^\r\n]*TrustBlocker') {
+    throw "Installer must have no filesystem trust-blocker deletion path."
+}
+if ($source -match 'LastBootUpTime') {
+    throw "Installer must not create wall-clock boot-epoch records."
+}
+
+$createStreamFunction = [regex]::Match(
+    $source,
+    '(?s)function New-MinerOpsInstallerProtectedFileCreateNewStream \{.*?\n\}'
+).Value
+foreach ($requiredCreateContract in @(
+    '\[IO\.FileStream\]::new',
+    'FileMode\]::CreateNew',
+    'FileSystemRights\]::WriteData',
+    'FileSystemRights\]::ReadPermissions',
+    'FileSystemRights\]::Synchronize',
+    'FileShare\]::None',
+    '\$Acl'
+)) {
+    if ($createStreamFunction -notmatch $requiredCreateContract) {
+        throw "Installer protected CreateNew stream contract is incomplete."
+    }
+}
+if ($createStreamFunction -match 'FullControl|SetAccessControl|Set-Acl') {
+    throw "Installer protected creation requests excess rights or repairs by path."
+}
+
+$trustBlockerFunction = [regex]::Match(
+    $source,
+    '(?s)function New-MinerOpsInstallerTrustBlocker \{.*?\n\}'
+).Value
+$trustCreateIndex = $trustBlockerFunction.IndexOf(
+    'New-MinerOpsInstallerProtectedFileCreateNewStream'
+)
+$trustVerifyIndex = $trustBlockerFunction.IndexOf(
+    'Test-MinerOpsInstallerProtectedFileAcl'
+)
+$trustContentIndex = $trustBlockerFunction.IndexOf('$record =')
+if (
+    $trustCreateIndex -lt 0 -or
+    $trustVerifyIndex -le $trustCreateIndex -or
+    $trustContentIndex -le $trustVerifyIndex
+) {
+    throw "Installer trust blockers must be protected and verified before content."
+}
+
+$configRepairFunction = [regex]::Match(
+    $source,
+    '(?s)function Protect-MinerOpsInstallerExistingConfig \{.*?\n\}'
+).Value
+foreach ($requiredRepairRight in @(
+    'ReadPermissions',
+    'ChangePermissions',
+    'TakeOwnership',
+    'Synchronize'
+)) {
+    if ($configRepairFunction -notmatch $requiredRepairRight) {
+        throw "Installer existing-config repair is missing $requiredRepairRight."
+    }
+}
+if ($configRepairFunction -match 'Set-Acl|FileAccess') {
+    throw "Installer existing-config repair must remain handle-bound."
+}
+
+$repairFunction = [regex]::Match(
+    $source,
+    '(?s)function Initialize-MinerOpsInstallerDirectory \{.*?\n\}'
+).Value
+$repairIndex = $repairFunction.IndexOf('Set-Acl -LiteralPath $fullPath')
+$abortIndex = $repairFunction.IndexOf('this invocation will not back up')
+if ($repairIndex -lt 0 -or $abortIndex -le $repairIndex) {
+    throw "Insecure existing-directory containment must abort before publication."
+}
+
+if ($source -match 'Register-ScheduledTask[^\r\n]*-Force') {
+    throw "Installer must not force-overwrite Scheduled Tasks."
+}
+if ($source -match '(?i)agent_secret|api3_password|api3_account') {
+    throw "Installer must not inspect or print credentials."
+}
+
+Write-Host "MinerOps installer source safety tests passed."

agents/windows/tests/Test-MinerOpsNativeHarness.ps1

@@ -0,0 +1,582 @@
+$ErrorActionPreference = "Stop"
+
+$supportPath = Join-Path $PSScriptRoot "MinerOpsNativeHarnessSupport.ps1"
+. $supportPath
+
+function Assert-True {
+    param(
+        [Parameter(Mandatory = $true)][bool]$Condition,
+        [Parameter(Mandatory = $true)][string]$Message
+    )
+    if (-not $Condition) { throw $Message }
+}
+
+function Assert-Throws {
+    param(
+        [Parameter(Mandatory = $true)][scriptblock]$Action,
+        [Parameter(Mandatory = $true)][string]$Pattern
+    )
+
+    try {
+        & $Action | Out-Null
+    }
+    catch {
+        if ($_.Exception.Message -notmatch $Pattern) {
+            throw "Expected '$Pattern', got '$($_.Exception.Message)'."
+        }
+        return
+    }
+    throw "Expected action to fail with '$Pattern'."
+}
+
+$script:Passed = 0
+function Invoke-HarnessTest {
+    param(
+        [Parameter(Mandatory = $true)][string]$Name,
+        [Parameter(Mandatory = $true)][scriptblock]$Action
+    )
+
+    & $Action
+    $script:Passed++
+    Write-Host "PASS: $Name"
+}
+
+function New-PassingSwapPostconditions {
+    return [pscustomobject]@{
+        TargetExists = $true
+        TargetIdentityUnchanged = $true
+        TargetContentUnchanged = $true
+        TargetAclTrusted = $true
+        TargetAclUnchanged = $true
+        TargetOwnerTrusted = $true
+        TargetOwnerUnchanged = $true
+        TargetSingleLink = $true
+        SourceExists = $true
+        SourceIdentityUnchanged = $true
+        SourceContentUnchanged = $true
+        AttackerSourceNotPromoted = $true
+        TargetDeniedStandardUserRead = $true
+        TargetDeniedStandardUserModify = $true
+        TargetDeniedStandardUserDelete = $true
+        TargetDeniedStandardUserRename = $true
+        NoAttackerReadableBackup = $true
+    }
+}
+
+function New-ReadySwapFixture {
+    return [pscustomobject]@{
+        SourceExists = $true
+        TargetExists = $true
+        PathsDistinct = $true
+        SourceCreatedByStandardUser = $true
+        SourceOwnedByStandardUser = $true
+        SourceReadable = $true
+        SourceModifiable = $true
+        SourceRenameable = $true
+        SourceDeleteCapable = $true
+        SourceReplaceAccessVerified = $true
+        TargetAclTrusted = $true
+        TargetOwnerTrusted = $true
+        TargetIdentityCaptured = $true
+        SourceIdentityCaptured = $true
+        FileIdentitiesDistinct = $true
+        BackupArgumentValid = $true
+        BackupPathsDistinct = $true
+        BackupExpectedStateVerified = $true
+        BackupConfidentialitySafe = $true
+        SameVolume = $true
+        NtfsVolume = $true
+    }
+}
+
+function New-SwapResult {
+    param([Parameter(Mandatory = $true)][string]$Status)
+    return [pscustomobject]@{
+        operation = "swap"
+        status = $Status
+        exception_type = ""
+        hresult = 0
+        outer_exception_type = ""
+        outer_hresult = 0
+        leaf_exception_type = ""
+        leaf_hresult = 0
+        native_error = $null
+        exception_chain_types = @()
+        replace_invoked = $true
+    }
+}
+
+Invoke-HarnessTest "helper classifies success and status exit codes" {
+    Assert-True ((Get-MinerOpsNativeStatusExitCode -Status "succeeded") -eq 0) `
+        "Success exit code changed."
+    Assert-True ((Get-MinerOpsNativeStatusExitCode -Status "security_denied") -eq 5) `
+        "Security-denial exit code changed."
+    Assert-True ((Get-MinerOpsNativeStatusExitCode -Status "fixture_error") -eq 6) `
+        "Fixture-error exit code changed."
+    Assert-True ((Get-MinerOpsNativeStatusExitCode -Status "unexpected_failure") -eq 7) `
+        "Unexpected-failure exit code changed."
+    Assert-True ((Get-MinerOpsNativeStatusExitCode `
+        -Status "security_denied_requires_postconditions") -eq 8) `
+        "Postcondition-gated security exit code changed."
+    Assert-True ((Get-MinerOpsNativeStatusExitCode `
+        -Status "api_precondition_failure") -eq 9) `
+        "API-precondition exit code changed."
+}
+
+Invoke-HarnessTest "helper distinguishes security, fixture, and unexpected failures" {
+    $denied = [UnauthorizedAccessException]::new("denied")
+    Assert-True ((Get-MinerOpsNativeExceptionStatus `
+        -Operation read -Exception $denied) -ceq "security_denied") `
+        "UnauthorizedAccessException was not a security denial."
+
+    $unableToRemove = [IO.IOException]::new("expected", -2147023721)
+    Assert-True ((Get-MinerOpsNativeExceptionStatus `
+        -Operation swap -Exception $unableToRemove) -ceq
+            "security_denied_requires_postconditions") `
+        "ERROR_UNABLE_TO_REMOVE_REPLACED was not postcondition-gated."
+
+    $missing = [IO.FileNotFoundException]::new("missing")
+    Assert-True ((Get-MinerOpsNativeExceptionStatus `
+        -Operation swap -Exception $missing) -ceq "fixture_error") `
+        "Missing swap source was not a fixture error."
+
+    $invalidArgument = [ArgumentException]::new("illegal backup path")
+    Assert-True ($invalidArgument.HResult -eq -2147024809) `
+        "ArgumentException no longer carries 0x80070057."
+    Assert-True ((Get-MinerOpsNativeExceptionStatus `
+        -Operation swap -Exception $invalidArgument) -ceq "fixture_error") `
+        "ERROR_INVALID_PARAMETER-like argument failure was not a fixture error."
+
+    $crossVolume = [IO.IOException]::new("different volume", -2147024879)
+    Assert-True ((Get-MinerOpsNativeExceptionStatus `
+        -Operation swap -Exception $crossVolume) -ceq
+            "api_precondition_failure") `
+        "Cross-volume swap was not an API-precondition failure."
+
+    $partialMove = [IO.IOException]::new("unexpected", -2147023720)
+    Assert-True ((Get-MinerOpsNativeExceptionStatus `
+        -Operation swap -Exception $partialMove) -ceq "unexpected_failure") `
+        "Partial ReplaceFile failure was accepted."
+}
+
+Invoke-HarnessTest "helper unwraps MethodInvocationException security denial" {
+    $denied = [UnauthorizedAccessException]::new("denied")
+    $wrapped = [Management.Automation.MethodInvocationException]::new(
+        "method invocation failed",
+        $denied
+    )
+    Assert-True ((Get-MinerOpsNativeExceptionStatus `
+        -Operation read -Exception $wrapped) -ceq "security_denied") `
+        "Wrapped UnauthorizedAccessException was not a security denial."
+}
+
+Invoke-HarnessTest "helper unwraps multiple PowerShell exception layers" {
+    $denied = [UnauthorizedAccessException]::new("denied")
+    $methodWrapper = [Management.Automation.MethodInvocationException]::new(
+        "method invocation failed",
+        $denied
+    )
+    $runtimeWrapper = [Management.Automation.RuntimeException]::new(
+        "runtime failed",
+        $methodWrapper
+    )
+    Assert-True ((Get-MinerOpsNativeExceptionStatus `
+        -Operation read -Exception $runtimeWrapper) -ceq "security_denied") `
+        "Nested PowerShell wrappers were not unwrapped."
+}
+
+Invoke-HarnessTest "helper decodes only HRESULT_FROM_WIN32 values" {
+    Assert-True ((Get-MinerOpsNativeWin32Error -HResult -2147024891) -eq 5) `
+        "0x80070005 did not decode as ERROR_ACCESS_DENIED."
+    $accessDenied = [IO.IOException]::new("access denied", -2147024891)
+    Assert-True ((Get-MinerOpsNativeExceptionStatus `
+        -Operation read -Exception $accessDenied) -ceq "security_denied") `
+        "Win32-derived ERROR_ACCESS_DENIED was not security evidence."
+    Assert-True ($null -eq (
+        Get-MinerOpsNativeWin32Error -HResult -2146233087
+    )) "CLR HRESULT 0x80131501 produced a bogus native error."
+}
+
+Invoke-HarnessTest "unrelated wrapped IOException is not a security denial" {
+    $ioFailure = [IO.IOException]::new("unrelated")
+    $wrapped = [Management.Automation.MethodInvocationException]::new(
+        "method invocation failed",
+        $ioFailure
+    )
+    Assert-True ((Get-MinerOpsNativeExceptionStatus `
+        -Operation read -Exception $wrapped) -ceq "unexpected_failure") `
+        "Unrelated wrapped IOException was accepted as security evidence."
+}
+
+Invoke-HarnessTest "wrapped fixture and precondition failures stay distinct" {
+    $missing = [IO.FileNotFoundException]::new("missing")
+    $wrappedMissing = [Management.Automation.MethodInvocationException]::new(
+        "method invocation failed",
+        $missing
+    )
+    Assert-True ((Get-MinerOpsNativeExceptionStatus `
+        -Operation swap -Exception $wrappedMissing) -ceq "fixture_error") `
+        "Wrapped fixture error changed classification."
+
+    $crossVolume = [IO.IOException]::new("different volume", -2147024879)
+    $wrappedCrossVolume = [Reflection.TargetInvocationException]::new(
+        "target invocation failed",
+        $crossVolume
+    )
+    Assert-True ((Get-MinerOpsNativeExceptionStatus `
+        -Operation swap -Exception $wrappedCrossVolume) -ceq
+            "api_precondition_failure") `
+        "Wrapped API precondition changed classification."
+}
+
+Invoke-HarnessTest "exception diagnostics report outer leaf and chain types" {
+    $denied = [UnauthorizedAccessException]::new("denied")
+    $wrapped = [Management.Automation.MethodInvocationException]::new(
+        "method invocation failed",
+        $denied
+    )
+    $details = Get-MinerOpsNativeExceptionDetails -Exception $wrapped
+    Assert-True ($details.OuterExceptionType -ceq
+        "System.Management.Automation.MethodInvocationException") `
+        "Exception diagnostics recorded the wrong outer type."
+    Assert-True ($details.LeafExceptionType -ceq
+        "System.UnauthorizedAccessException") `
+        "Exception diagnostics recorded the wrong leaf type."
+    Assert-True ($details.ExceptionChainTypes.Count -eq 2) `
+        "Exception diagnostics recorded the wrong chain length."
+    Assert-True (-not $details.ExceptionChainTruncated) `
+        "A short exception chain was reported as truncated."
+}
+
+Invoke-HarnessTest "exception diagnostics handle null InnerException" {
+    $wrapperOnly = [Management.Automation.RuntimeException]::new(
+        "wrapper without inner exception"
+    )
+    $details = Get-MinerOpsNativeExceptionDetails -Exception $wrapperOnly
+    Assert-True ($details.OuterExceptionType -ceq $details.LeafExceptionType) `
+        "Null InnerException did not leave the wrapper as the leaf."
+    Assert-True ($details.ExceptionChainTypes.Count -eq 1) `
+        "Null InnerException produced an invalid chain."
+}
+
+Invoke-HarnessTest "exception-chain traversal is bounded defensively" {
+    [Exception]$deep = [UnauthorizedAccessException]::new("denied")
+    foreach ($level in 1..40) {
+        $deep = [Exception]::new("wrapper $level", $deep)
+    }
+    $details = Get-MinerOpsNativeExceptionDetails -Exception $deep
+    Assert-True ($details.ExceptionChainTypes.Count -eq 32) `
+        "Deep exception traversal did not stop at its bound."
+    Assert-True ([bool]$details.ExceptionChainTruncated) `
+        "Deep exception traversal did not report truncation."
+    Assert-True ((Get-MinerOpsNativeExceptionStatus `
+        -Operation read -Exception $deep) -ceq "unexpected_failure") `
+        "Truncated exception evidence did not fail closed."
+}
+
+Invoke-HarnessTest "swap probe parses and passes an explicit native null" {
+    $probePath = Join-Path $PSScriptRoot `
+        "Invoke-MinerOpsStandardUserProbe.ps1"
+    $tokens = $null
+    $parseErrors = $null
+    [Management.Automation.Language.Parser]::ParseFile(
+        $probePath,
+        [ref]$tokens,
+        [ref]$parseErrors
+    ) | Out-Null
+    Assert-True ($parseErrors.Count -eq 0) `
+        "Standard-user probe has parser errors."
+    $probeSource = [IO.File]::ReadAllText($probePath)
+    Assert-True ($probeSource -match '\[NullString\]::Value') `
+        "Swap probe does not pass an explicit native null backup argument."
+    Assert-True ($probeSource -notmatch
+        'File\]::Replace\([^\)]*\$null') `
+        "Swap probe regressed to a bare PowerShell null backup argument."
+    Assert-True ($probeSource -match
+        'backup-producing swap fixtures are prohibited') `
+        "Swap probe no longer prohibits confidentiality-unsafe backups."
+}
+
+Invoke-HarnessTest "NullString preserves native null for a .NET string" {
+    if (-not ("MinerOpsNativeHarnessNullStringProbe" -as [type])) {
+        Add-Type -TypeDefinition @'
+public static class MinerOpsNativeHarnessNullStringProbe
+{
+    public static bool IsNull(string value)
+    {
+        return value == null;
+    }
+}
+'@
+    }
+    Assert-True (-not (
+        [MinerOpsNativeHarnessNullStringProbe]::IsNull($null)
+    )) "A bare PowerShell null was not coerced to String.Empty."
+    Assert-True (
+        [MinerOpsNativeHarnessNullStringProbe]::IsNull([NullString]::Value)
+    ) "NullString did not preserve native null for a .NET string."
+}
+
+Invoke-HarnessTest "same source and destination is a fixture failure" {
+    $fixture = New-ReadySwapFixture
+    $fixture.PathsDistinct = $false
+    $classification = Get-MinerOpsNativeSwapFixtureStatus -Fixture $fixture
+    Assert-True ($classification.Status -ceq "fixture_error") `
+        "Equal source and destination paths were accepted."
+}
+
+Invoke-HarnessTest "missing source is a fixture failure" {
+    $fixture = New-ReadySwapFixture
+    $fixture.SourceExists = $false
+    $classification = Get-MinerOpsNativeSwapFixtureStatus -Fixture $fixture
+    Assert-True ($classification.Status -ceq "fixture_error") `
+        "Missing source was accepted."
+}
+
+Invoke-HarnessTest "missing target is a fixture failure" {
+    $fixture = New-ReadySwapFixture
+    $fixture.TargetExists = $false
+    $classification = Get-MinerOpsNativeSwapFixtureStatus -Fixture $fixture
+    Assert-True ($classification.Status -ceq "fixture_error") `
+        "Missing target was accepted."
+}
+
+Invoke-HarnessTest "invalid backup argument is a fixture failure" {
+    foreach ($property in @(
+        "BackupArgumentValid",
+        "BackupPathsDistinct",
+        "BackupExpectedStateVerified",
+        "BackupConfidentialitySafe"
+    )) {
+        $fixture = New-ReadySwapFixture
+        $fixture.$property = $false
+        $classification = Get-MinerOpsNativeSwapFixtureStatus -Fixture $fixture
+        Assert-True ($classification.Status -ceq "fixture_error") `
+            "Invalid backup property $property was accepted."
+    }
+}
+
+Invoke-HarnessTest "cross-volume limitation is not a security pass" {
+    $fixture = New-ReadySwapFixture
+    $fixture.SameVolume = $false
+    $classification = Get-MinerOpsNativeSwapFixtureStatus -Fixture $fixture
+    Assert-True ($classification.Status -ceq "api_precondition_failure") `
+        "Cross-volume fixture was not an API-precondition failure."
+}
+
+Invoke-HarnessTest "valid controlled same-volume source is attack-ready" {
+    $classification = Get-MinerOpsNativeSwapFixtureStatus `
+        -Fixture (New-ReadySwapFixture)
+    Assert-True ($classification.Status -ceq "ready") `
+        "Valid same-volume fixture was not attack-ready."
+}
+
+Invoke-HarnessTest "source ownership and control are mandatory" {
+    foreach ($property in @(
+        "SourceCreatedByStandardUser",
+        "SourceOwnedByStandardUser",
+        "SourceReadable",
+        "SourceModifiable",
+        "SourceRenameable",
+        "SourceDeleteCapable",
+        "SourceReplaceAccessVerified"
+    )) {
+        $fixture = New-ReadySwapFixture
+        $fixture.$property = $false
+        $classification = Get-MinerOpsNativeSwapFixtureStatus -Fixture $fixture
+        Assert-True ($classification.Status -ceq "fixture_error") `
+            "Missing source-control proof $property was accepted."
+    }
+}
+
+Invoke-HarnessTest "invalid swap fixture cannot pass as security" {
+    Assert-Throws -Pattern "fixture was invalid" -Action {
+        Assert-MinerOpsNativeSwapSecurityOutcome `
+            -Result (New-SwapResult -Status "fixture_error") `
+            -Postconditions (New-PassingSwapPostconditions)
+    }
+}
+
+Invoke-HarnessTest "unrelated swap API precondition cannot pass as security" {
+    Assert-Throws -Pattern "unrelated API precondition" -Action {
+        Assert-MinerOpsNativeSwapSecurityOutcome `
+            -Result (New-SwapResult -Status "api_precondition_failure") `
+            -Postconditions (New-PassingSwapPostconditions)
+    }
+}
+
+Invoke-HarnessTest "successful replacement is a security failure" {
+    Assert-Throws -Pattern "completed the protected replacement" -Action {
+        Assert-MinerOpsNativeSwapSecurityOutcome `
+            -Result (New-SwapResult -Status "succeeded") `
+            -Postconditions (New-PassingSwapPostconditions)
+    }
+}
+
+Invoke-HarnessTest "security denial passes only with all postconditions" {
+    Assert-MinerOpsNativeSwapSecurityOutcome `
+        -Result (New-SwapResult -Status "security_denied") `
+        -Postconditions (New-PassingSwapPostconditions)
+    Assert-MinerOpsNativeSwapSecurityOutcome `
+        -Result (New-SwapResult `
+            -Status "security_denied_requires_postconditions") `
+        -Postconditions (New-PassingSwapPostconditions)
+
+    $failed = New-PassingSwapPostconditions
+    $failed.TargetAclTrusted = $false
+    Assert-Throws -Pattern "target ACL is not trusted" -Action {
+        Assert-MinerOpsNativeSwapSecurityOutcome `
+            -Result (New-SwapResult -Status "security_denied") `
+            -Postconditions $failed
+    }
+}
+
+Invoke-HarnessTest "denial with changed target identity is a security failure" {
+    $failed = New-PassingSwapPostconditions
+    $failed.TargetIdentityUnchanged = $false
+    Assert-Throws -Pattern "target identity changed" -Action {
+        Assert-MinerOpsNativeSwapSecurityOutcome `
+            -Result (New-SwapResult -Status "security_denied") `
+            -Postconditions $failed
+    }
+}
+
+Invoke-HarnessTest "denial with changed target content is a security failure" {
+    $failed = New-PassingSwapPostconditions
+    $failed.TargetContentUnchanged = $false
+    Assert-Throws -Pattern "target content changed" -Action {
+        Assert-MinerOpsNativeSwapSecurityOutcome `
+            -Result (New-SwapResult -Status "security_denied") `
+            -Postconditions $failed
+    }
+}
+
+Invoke-HarnessTest "denial with changed ACL or owner is a security failure" {
+    foreach ($property in @(
+        "TargetAclTrusted",
+        "TargetAclUnchanged",
+        "TargetOwnerTrusted",
+        "TargetOwnerUnchanged"
+    )) {
+        $failed = New-PassingSwapPostconditions
+        $failed.$property = $false
+        Assert-Throws -Pattern "target (ACL|owner)" -Action {
+            Assert-MinerOpsNativeSwapSecurityOutcome `
+                -Result (New-SwapResult -Status "security_denied") `
+                -Postconditions $failed
+        }
+    }
+}
+
+Invoke-HarnessTest "attacker-readable protected backup is a security failure" {
+    $failed = New-PassingSwapPostconditions
+    $failed.NoAttackerReadableBackup = $false
+    Assert-Throws -Pattern "through a backup" -Action {
+        Assert-MinerOpsNativeSwapSecurityOutcome `
+            -Result (New-SwapResult -Status "security_denied") `
+            -Postconditions $failed
+    }
+}
+
+Invoke-HarnessTest "denial must record that File.Replace was reached" {
+    $result = New-SwapResult -Status "security_denied"
+    $result.replace_invoked = $false
+    Assert-Throws -Pattern "did not reach System.IO.File.Replace" -Action {
+        Assert-MinerOpsNativeSwapSecurityOutcome `
+            -Result $result -Postconditions (New-PassingSwapPostconditions)
+    }
+}
+
+$initialState = Get-MinerOpsNativeGetItemState
+try {
+    Invoke-HarnessTest "trace leaves no global function when none existed" {
+        $childScript = Join-Path $PSScriptRoot `
+            "Test-MinerOpsNativeHarnessGetItemState.ps1"
+        $powerShell = (Get-Process -Id $PID).Path
+        & $powerShell -NoLogo -NoProfile -File $childScript `
+            -Mode NoExistingFunction -SupportPath $supportPath
+        Assert-True ($LASTEXITCODE -eq 0) `
+            "No-existing-function child test failed."
+    }
+
+    Invoke-HarnessTest "trace restores an existing global function exactly" {
+        $childScript = Join-Path $PSScriptRoot `
+            "Test-MinerOpsNativeHarnessGetItemState.ps1"
+        $powerShell = (Get-Process -Id $PID).Path
+        & $powerShell -NoLogo -NoProfile -File $childScript `
+            -Mode ExistingFunction -SupportPath $supportPath
+        Assert-True ($LASTEXITCODE -eq 0) `
+            "Existing-function child test failed."
+    }
+
+    Invoke-HarnessTest "trace cleanup survives Action failure" {
+        $before = Get-MinerOpsNativeGetItemState
+        Assert-Throws -Pattern "injected trace failure" -Action {
+            Invoke-MinerOpsNativeGetItemTrace -Action {
+                Get-Item -LiteralPath $supportPath | Out-Null
+                throw "injected trace failure"
+            }
+        }
+        Assert-MinerOpsNativeGetItemState -Expected $before `
+            -Context "throwing trace action"
+    }
+
+    Invoke-HarnessTest "trace cleanup survives a later assertion failure" {
+        $before = Get-MinerOpsNativeGetItemState
+        try {
+            [void](Invoke-MinerOpsNativeGetItemTrace -Action {
+                Get-Item -LiteralPath $supportPath
+            })
+            throw "injected post-trace assertion failure"
+        }
+        catch {
+            Assert-True (
+                $_.Exception.Message -match "post-trace assertion failure"
+            ) "Unexpected post-trace failure."
+        }
+        Assert-MinerOpsNativeGetItemState -Expected $before `
+            -Context "post-trace assertion failure"
+    }
+
+    Invoke-HarnessTest "multiple sequential traces preserve command state" {
+        $before = Get-MinerOpsNativeGetItemState
+        foreach ($iteration in 1..3) {
+            $observed = @(Invoke-MinerOpsNativeGetItemTrace -Action {
+                Get-Item -LiteralPath $supportPath
+            })
+            Assert-True ($observed.Count -eq 1) `
+                "Sequential trace $iteration recorded the wrong count."
+            Assert-MinerOpsNativeGetItemState -Expected $before `
+                -Context "sequential trace $iteration"
+        }
+    }
+
+    Invoke-HarnessTest "simulated top-level failure restores Get-Item" {
+        $before = Get-MinerOpsNativeGetItemState
+        try {
+            try {
+                [void](Invoke-MinerOpsNativeGetItemTrace -Action {
+                    Get-Item -LiteralPath $supportPath
+                })
+                throw "injected top-level harness failure"
+            }
+            finally {
+                Assert-MinerOpsNativeGetItemState -Expected $before `
+                    -Context "simulated harness final cleanup"
+            }
+        }
+        catch {
+            Assert-True (
+                $_.Exception.Message -match "top-level harness failure"
+            ) "Unexpected simulated top-level failure."
+        }
+        Assert-MinerOpsNativeGetItemState -Expected $before `
+            -Context "after simulated top-level failure"
+    }
+}
+finally {
+    Assert-MinerOpsNativeGetItemState -Expected $initialState `
+        -Context "portable native-harness tests final cleanup"
+}
+
+Write-Host "$Passed native-harness regression tests passed."

agents/windows/tests/Test-MinerOpsNativeHarnessGetItemState.ps1

@@ -0,0 +1,48 @@
+[CmdletBinding()]
+param(
+    [Parameter(Mandatory = $true)]
+    [ValidateSet("NoExistingFunction", "ExistingFunction")]
+    [string]$Mode,
+    [Parameter(Mandatory = $true)][string]$SupportPath
+)
+
+$ErrorActionPreference = "Stop"
+. $SupportPath
+
+if ($Mode -ceq "NoExistingFunction") {
+    $before = Get-MinerOpsNativeGetItemState
+    if ([bool]$before.FunctionExisted) {
+        throw "Child process unexpectedly began with a global Get-Item function."
+    }
+    $observed = @(Invoke-MinerOpsNativeGetItemTrace -Action {
+        Get-Item -LiteralPath $SupportPath
+    })
+    if ($observed -cnotcontains $SupportPath) {
+        throw "Trace did not observe Get-Item."
+    }
+    Assert-MinerOpsNativeGetItemState -Expected $before `
+        -Context "no-preexisting-function child test"
+    return
+}
+
+$existing = { param($LiteralPath) "preexisting:$LiteralPath" }
+Set-Item -LiteralPath "Function:\global:Get-Item" -Value $existing -Force
+$before = Get-MinerOpsNativeGetItemState
+$observed = @(Invoke-MinerOpsNativeGetItemTrace -Action {
+    Get-Item -LiteralPath $SupportPath
+})
+if ($observed -cnotcontains $SupportPath) {
+    throw "Trace did not observe Get-Item over an existing global function."
+}
+$after = Get-MinerOpsNativeGetItemState
+Assert-MinerOpsNativeGetItemState -Expected $before `
+    -Context "preexisting-function child test"
+if ($after.FunctionScriptBlock.ToString() -cne $existing.ToString()) {
+    throw "Existing Get-Item ScriptBlock was not restored exactly."
+}
+if (-not [object]::ReferenceEquals(
+    $after.FunctionScriptBlock,
+    $before.FunctionScriptBlock
+)) {
+    throw "Existing Get-Item ScriptBlock instance changed."
+}

agents/windows/tests/WINDOWS_CREDENTIAL_TRANSITION_VALIDATION.md

@@ -0,0 +1,305 @@
+# Disposable Windows filesystem-trust validation
+
+Native Windows evidence is required before deployment. The cross-platform
+behavioral harness proves deterministic state-machine decisions; it cannot
+prove NTFS access checks, directory-handle sharing, junction behavior,
+same-directory rename semantics, or Scheduled Task behavior.
+
+## Isolation
+
+Use a newly created, disposable Windows 10/11 or Windows Server VM. Do not join
+it to a production domain or connect it to a production MinerOps Hub, database,
+or miner network. Never use a production package, URL, Agent ID, transition
+token, shared secret, or API3 credential. Copy only the candidate
+`agents\windows` directory to the VM and take a snapshot first.
+
+Run 64-bit Windows PowerShell 5.1 as Administrator:
+
+```powershell
+Set-ExecutionPolicy -Scope Process Bypass
+.\tests\Test-MinerOpsCredentialTransition.Windows.ps1 `
+    -AcknowledgeDisposableVm
+```
+
+Record the exact pass count printed by the candidate harness. Do not claim the
+native suite passed unless this command actually completed on Windows. Save the
+complete transcript plus:
+
+```powershell
+Get-ComputerInfo | Select-Object WindowsProductName, WindowsVersion, OsBuildNumber
+$PSVersionTable
+```
+
+The native primitive suite verifies:
+
+- protected credential, enrollment, installer, and trust-blocker files are
+  created with their final `FileSecurity`, held exclusively, and read back
+  through the same still-empty handle before any content is written;
+- the directory and credential-file DACLs deny standard-user read, create,
+  delete, rename, and replacement-swap operations;
+- ACL setup or read-back failure cannot leave secret-bearing content;
+- a pre-created pathname remains unchanged when `CreateNew` fails;
+- an insecure artifact is repaired through an exclusive handle with explicit
+  security rights, then rejected; inability to acquire those rights fails
+  closed without a path-based fallback;
+- the durable blocker exists before an ACL-repaired artifact could be
+  reconsidered, and remains effective on the next check;
+- quarantine evidence is unreadable to the standard user;
+- the two-rename install leaves the new active file and a non-authoritative
+  prior remnant, and an active-missing install does not invent prior authority;
+- a directory junction is rejected;
+- a permissive directory is hardened, gets an external durable blocker, and
+  cannot continue in that process or an ordinary rerun;
+- pre-repair standard-user file and directory handles are exercised after ACL
+  repair while automatic transition remains blocked regardless of whether the
+  handle operation succeeds;
+- hard-linked enrollment, runtime, and backup targets are rejected; and
+- a real harmless expected Scheduled Task is positively verified for exact
+  `Running` and `Ready`, while missing, query failure, disabled, malformed,
+  wrong-action, and wrong-principal cases fail closed.
+
+## Full-kernel-boot epoch matrix
+
+The source uses the canonical value
+`windows-full-boot-event-v1:<16 lowercase hex digits>`. The payload is the
+Event Log `RecordId` anchor of the newest System-log event from
+`Microsoft-Windows-Kernel-Boot`, event ID 27, whose namespace-aware XML payload
+contains exactly one canonical `BootType` value equal to `0`. `ProviderName`,
+`Id`, nullable `RecordId`, and nullable `Version` must have the real typed
+EventLogRecord shapes; supported versions are 0 and 1. The record ID is not an
+immutable boot GUID. A reset requires a valid current anchor strictly greater
+than the stored anchor. Equal, lower/restored/reused, missing, and ambiguous
+anchors fail closed. The implementation deliberately does not use wall-clock
+time or the Windows `BootId` counter: Fast Startup is a hibernated kernel
+restoration and must not authorize reset merely because Windows reports a new
+startup sequence.
+
+On a disposable VM, dot-source the transition script and record
+`Get-MinerOpsBootIdentifier` before and after every row. Preserve the raw event
+object and `ToXml()` output from `Get-WinEvent`. For each event, record the
+runtime types and values of `ProviderName`, `Id`, `RecordId`, and `Version`, the
+root namespace, and the `System/EventData/Data[@Name='BootType']` shape.
+
+| Transition | Required canonical identity |
+| --- | --- |
+| Change system clock within the running session | unchanged |
+| Change timezone within the running session | unchanged |
+| Sleep and resume | unchanged |
+| Hibernate and resume, where supported | unchanged |
+| Shutdown and power-on with Fast Startup, where supported | unchanged |
+| Restart from the Windows power menu | strictly greater record anchor |
+
+For the Fast Startup row, independently confirm that Windows restored kernel
+session 0 and that the latest event 27 has a nonzero `BootType`; the newest
+full-boot (`BootType=0`) event record must remain the same. For the Restart row,
+confirm a new exact `BootType=0` event and a new canonical identity. Also test a
+missing System log/provider event, duplicated `BootType`, malformed XML value,
+wrong namespace, unsupported/null version, wrong provider/event ID,
+zero/malformed record ID, and query access failure; every case must fail
+closed.
+
+Use a separate disposable snapshot for log-retention behavior. Preserve the
+pre-clear stored anchor and evidence first, then clear only the disposable VM's
+System log. Verify that missing history cannot authorize reset. After a full
+Restart, if Event Log numbering restarts at or below the stored anchor, verify
+that automatic reset remains blocked and requires operator intervention. Also
+restore a snapshot exposing only an older valid full-boot event and confirm the
+lower record ID is rejected. Do not add a timestamp fallback for any row. A
+native result is required because EventLogRecord property types, provider
+namespace/version, log-clear numbering, and power-state behavior cannot be
+proven by the Linux harness.
+
+## Loopback workflow fixture
+
+Use a fresh snapshot for full workflow testing. All values must be disposable.
+
+1. Create a test `C:\MinerOpsAgent\agent-config.json` containing random Agent,
+   Site, and Zone UUIDs plus placeholder secrets.
+2. Place a harmless `MinerOpsAgentService.ps1` in the target and register
+   `MinerOpsAgent` with the exact installer-controlled SYSTEM/highest action:
+   `powershell.exe -NoProfile -ExecutionPolicy Bypass -File
+   "C:\MinerOpsAgent\MinerOpsAgentService.ps1"`.
+3. Serve a loopback-only mock at `http://127.0.0.1:<port>`. Its
+   `POST /api/agent/credential-transition` handler records only the token hash
+   and submitted `agent_secret_hash`, returns the fixed disposable
+   Agent/Site/Zone identity, returns the same response for the same token and
+   hash, and rejects a changed hash.
+4. Build a local package with that loopback origin and a random disposable
+   43-character token. Never download from or call a real Hub.
+5. For each case, restore the snapshot or recreate the fixture. Run once with
+   the task initially running and once with it intentionally stopped.
+
+The child-process shape for hard termination is:
+
+```powershell
+$checkpoint = 'pending-written'
+$code = @"
+. 'C:\validation\agents\windows\Upgrade-MinerOpsAgentCredential.ps1'
+Invoke-MinerOpsAgentCredentialTransition `
+  -TargetRoot 'C:\MinerOpsAgent' `
+  -PackageRoot 'C:\validation\agents\windows' `
+  -ScheduledTaskName 'MinerOpsAgent' `
+  -CheckpointAction { param(`$name) if (`$name -eq '$checkpoint') { Stop-Process -Id `$PID -Force } }
+"@
+$encoded = [Convert]::ToBase64String([Text.Encoding]::Unicode.GetBytes($code))
+Start-Process powershell.exe `
+    -ArgumentList '-NoProfile','-EncodedCommand',$encoded -Wait
+```
+
+After termination, rerun normally without deleting, repairing, or editing any
+artifact. Every retry request must use the same token and
+`agent_secret_hash`; no retry may generate a replacement secret.
+
+## Hard-termination matrix
+
+| Checkpoint | State before rerun | Required rerun result |
+| --- | --- | --- |
+| `directory-repair-blocker-written` | external protected blocker durable before repair | no artifact is trusted; every ordinary invocation remains blocked |
+| `directory-trust-established` | hardened directory; external blocker retained | pre-repair recovery/pending/remnants are quarantined without parsing; even a clean repair cannot continue in this process |
+| `directory-containment-scan-complete` | initial known-name scan finished; external blocker retained | a late recovery/pending file never becomes authority on this or later ordinary invocations |
+| `trust-reset-authorized` | changed full-boot epoch and strict original task intent are durable; blocker retained | approved retry preserves that intent and repeats publication; it cannot delete early |
+| `trust-reset-runtime-published` | fresh package runtime is durable; blocker is `runtime-published` | approved retry resumes credentials/config/task convergence with the blocker retained |
+| `quarantine-blocker-written` | blocker durable; insecure authoritative artifact may remain | second run never parses or redeems it |
+| `artifact-moved-to-quarantine` | authority name absent; evidence is beneath quarantine | evidence remains non-authoritative and the quarantine directory is reverified |
+| `quarantine-directory-verified` | evidence is under the protected non-traversable quarantine directory | rerun remains blocked and never reads or ACL-repairs evidence contents |
+| `recovery-written` | protected recovery; original task state retained | exact saved token/secret is reused |
+| `task-stopped` | recovery protected; task stopped; no request yet | transition completes and restores original task intent |
+| `server-committed` | server may have committed; task stopped | idempotent same-hash redemption completes |
+| `pending-written` | protected matching recovery and pending | pending is validated and reused, not overwritten |
+| `before-replace` | active legacy config plus pending | first rename may proceed; rerun converges |
+| `active-moved-to-prior` | active missing; matching pending and legacy prior present | prior is never promoted; pending becomes active |
+| `pending-moved-to-active` | committed active plus prior; pending absent | active is verified; prior is cleanup-only |
+| `after-replace` | same as prior row | active is verified before task restoration |
+| `task-restored` | active and final task state verified | retry verifies again and cleans up |
+| `before-trust-blocker-removal` | active config and final strict task state verified; external blocker still present | only an explicitly approved parent retry may verify again and remove the blocker |
+| `before-recovery-cleanup` | active/task verified; recovery remains last | retry uses recovery and completes cleanup |
+
+For each row inspect ACLs and task state without displaying secret contents:
+
+```powershell
+Get-Acl C:\MinerOpsAgent | Format-List
+Get-Acl C:\MinerOpsAgent\agent-credential-transition.recovery.json `
+    -ErrorAction SilentlyContinue | Format-List
+Get-Acl C:\MinerOpsAgent\agent-config.json.pending `
+    -ErrorAction SilentlyContinue | Format-List
+Get-ScheduledTask -TaskName MinerOpsAgent | Select-Object TaskName, State
+```
+
+## Provenance and quarantine cases
+
+Run these as separate restored-snapshot cases:
+
+1. **Malicious recovery, three invocations.** Stop after `recovery-written`, add
+   a Users read/write ACE to recovery, replace its secret and
+   `original_task_running`, and run twice. The first run must create a blocker,
+   quarantine without parsing, and send no request. The second must remain
+   blocked, send no request, keep the real original task state, and omit the
+   attacker secret from all output. A third ordinary run must remain blocked.
+2. **ACL-repair laundering attempt.** Terminate at
+   `quarantine-blocker-written`, then repair the still-authoritative recovery
+   file ACL by hand without deleting the blocker. The next run must quarantine
+   it without reading or further ACL mutation and must not redeem it. This
+   proves ACL correctness cannot override the durable provenance decision.
+3. **Malicious pending, three invocations.** Stop after `pending-written`, add a
+   Users ACE and alter the credential/Agent data. All runs must send no new
+   request and must never promote pending.
+4. **Permissive directory with attacker state.** Add Users Modify to the target
+   directory, place recovery and pending before repair, and run. Both artifacts
+   must be quarantined, a blocker retained, and no request sent. A hard stop at
+   `directory-trust-established` must have the same second-run result.
+5. **Quarantine preservation.** A later successful, separately authorized
+   transition must not silently delete unresolved blocker or evidence files.
+   Operator review must remove them only after invalidating the exposed token
+   and obtaining a new package.
+6. **Late arrival after scan.** At `directory-containment-scan-complete`, use a
+   handle opened before repair to attempt creation/rename of recovery and
+   pending names, including a file whose ACL now looks correct. The current,
+   second, and third ordinary runs must send no request and perform no
+   activation regardless of the handle operation's Windows result.
+7. **Trust-epoch reset.** Use Restart, confirm the canonical full-kernel-boot
+   event identity changed, clear suspicious transition state only under the
+   approved procedure, and run with
+   `-ApproveFilesystemTrustResetAfterReboot`. Confirm fresh runtime publication
+   occurs while the external blocker exists, old runtime is never a rollback
+   source, the task remains stopped until transition verification, and the
+   blocker remains through credential/config convergence and final strict task
+   verification. It may disappear only after all of those parent checks pass.
+   The same switch before Restart must fail. Repeat after clock/timezone change,
+   sleep, hibernate, and Fast Startup; each must still fail as the same epoch.
+8. **Direct installer reset attempts.** With a real external blocker present,
+   invoke `install.ps1 -ApproveFilesystemTrustResetAfterReboot` directly for a
+   successful publication and an injected publication failure. Repeat with the
+   task disabled, `Unknown`, `Queued`, wrong action, and wrong principal. The
+   blocker must remain in every case. Then run the complete parent workflow and
+   prove deletion occurs only after its final convergence checks.
+
+In every quarantine case, test standard-user reads against every
+`minerops-quarantine-credential-transition-*.evidence` file. Access must be
+denied, and neither console nor error transcripts may contain its contents.
+
+## Hard-link cases
+
+On NTFS, create a second name for each candidate with `New-Item -ItemType
+HardLink`. Test attacker-created enrollment pending, recovery, and final config
+paths; installed runtime destinations; and rollback sources/destinations. Every
+case must fail before secret write, redemption, publication, or restore. Verify
+that no attacker-readable alias contains a permanent credential and that a
+failed `CreateNew` does not delete or adopt the pre-existing file.
+
+## Strict Scheduled Task matrix
+
+Use the exact installer-controlled action and principal as the valid fixture.
+Run both durable intents through `Running`, `Ready`, missing, provider/query
+exception, access denied where practical, null/empty state, `Disabled`,
+`Unknown`, `Queued`, malformed object/definition, multiple results, wrong
+executable/script arguments, and wrong principal. Only running plus `Running`
+and stopped plus `Ready` succeed. Stopped plus `Running` must issue stop and
+then positively verify `Ready`.
+
+Capture the actual provider types for `TaskPath`, `State`, `Settings.Enabled`,
+`Actions`, action `Execute`/`Arguments`, and principal `UserId`, `LogonType`, and
+`RunLevel`. Verify root `TaskPath` is an actual string equal to `\` and Enabled
+is an actual Boolean `$true`. Missing, null, empty, array, numeric, and truthy
+string substitutions must fail; provider enum normalization is allowed only for
+`State`, `LogonType`, and `RunLevel`.
+
+After the server-commit checkpoint, inject final task verification failure.
+Recovery must remain and no success output or cleanup may occur. Repair the task
+and rerun; the recorded token and `agent_secret_hash` must be identical and the
+retry must converge without generating a new secret.
+
+## Active-missing and replacement cases
+
+Run all of these with a cryptographically matching protected recovery record:
+
+- active missing, protected matching pending present, no prior (legacy
+  `ReplaceFile` partial state): converges with the same token and secret;
+- active missing, matching pending and valid legacy prior present (new first
+  rename completed): converges through pending; prior is never authority;
+- committed active and valid prior present, pending absent (new second rename
+  completed): verifies active and cleans prior last;
+- failure before the first rename: active and pending remain, rerun converges;
+- failure between the two renames: active is absent, pending and prior remain,
+  rerun converges;
+- failure immediately after pending becomes active: active and prior remain,
+  rerun verifies active before cleanup;
+- active missing with no recovery or with unknown pending: fails closed;
+- active missing with malformed pending: fails before redemption;
+- active missing with mismatched Agent, secret, or secret hash: fails before
+  redemption; and
+- active missing with only a stale prior: fails closed and never promotes it.
+
+For every successful active-missing case, confirm exact Agent/Hub/Site/Zone
+identity, the same token and secret hash on every request, active-file DACL,
+and final Scheduled Task intent. Initially running must end running;
+intentionally stopped must remain stopped.
+
+## Completion and cleanup
+
+At successful termination, recovery, pending, prior, and consumed enrollment
+files are absent; unresolved quarantine/blocker evidence is never silently
+removed. Console/error transcripts contain neither token nor generated secret.
+
+Record any disposable account, Scheduled Task, junction, directory, or mock
+service left by an interrupted validation, remove only those validation
+resources, then restore the snapshot or destroy the VM.

agents/windows/uninstall.ps1

@@ -0,0 +1,21 @@
+#Requires -RunAsAdministrator
+$ErrorActionPreference = "Stop"
+
+$Target = "C:\MinerOpsAgent"
+$Tasks = @(
+    "MinerOpsAgent", "MinerOpsAgentTray", "MinerOpsApi3Enrichment", "MinerOpsPoolPoller"
+)
+foreach ($name in $Tasks) {
+    Unregister-ScheduledTask -TaskName $name -Confirm:$false -ErrorAction SilentlyContinue
+}
+
+$RuntimeFiles = @(
+    "MinerOpsAgentService.ps1", "MinerOpsAgentTray.ps1", "MinerOpsAgentGUI.ps1",
+    "MinerOpsApi3EnrichmentPoller.ps1", "MinerOpsPoolPoller.ps1",
+    "MinerOpsPoolPollerTask.ps1", "EnrichOneMiner.ps1", "MinerOpsControl.ps1",
+    "VERSION"
+)
+foreach ($name in $RuntimeFiles) {
+    Remove-Item (Join-Path $Target $name) -Force -ErrorAction SilentlyContinue
+}
+Write-Host "MinerOps Agent tasks and code removed. Config, state, logs, and backups were preserved."

backend/Dockerfile

@@ -5,15 +5,18 @@ WORKDIR /app
 ENV PYTHONDONTWRITEBYTECODE=1
 ENV PYTHONUNBUFFERED=1
 
-COPY requirements.txt /app/requirements.txt
+COPY backend/requirements.txt /app/requirements.txt
 
 RUN pip install --no-cache-dir --upgrade pip \
     && pip install --no-cache-dir -r /app/requirements.txt
 
-COPY app /app/app
-COPY alembic.ini /app/alembic.ini
-COPY alembic /app/alembic
+COPY backend/app /app/app
+COPY backend/alembic.ini /app/alembic.ini
+COPY backend/alembic /app/alembic
+
+# Canonical Agent source used to construct short-lived enrollment packages.
+COPY agents/windows /app/agents/windows
 
 EXPOSE 8000
 
-CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "8000"]
+CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "8000"]

backend/alembic/versions/0015_miner_control_foundation.py

@@ -0,0 +1,137 @@
+"""add miner control foundation
+
+Revision ID: 0015_miner_control_foundation
+Revises: 0014_repair_parts_tracking
+Create Date: 2026-08-24
+"""
+
+from typing import Sequence, Union
+
+import sqlalchemy as sa
+from alembic import op
+from sqlalchemy.dialects import postgresql
+
+
+revision: str = "0015_miner_control_foundation"
+down_revision: Union[str, None] = "0014_repair_parts_tracking"
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+QUEUE_STATUSES = ("pending", "claimed", "completed", "failed", "cancelled")
+
+
+def _format_values(values: object) -> str:
+    return ", ".join(str(value) for value in (values or []))
+
+
+def upgrade() -> None:
+    connection = op.get_bind()
+    unknown_statuses = connection.execute(
+        sa.text(
+            """
+            SELECT array_agg(DISTINCT command_status ORDER BY command_status)
+            FROM minerops_agent_command_queue
+            WHERE command_status NOT IN ('pending', 'claimed', 'completed', 'failed', 'cancelled')
+            """
+        ),
+    ).scalar()
+    if unknown_statuses:
+        raise RuntimeError(
+            "Cannot upgrade to 0015: minerops_agent_command_queue contains "
+            f"unsupported command_status values: {_format_values(unknown_statuses)}. "
+            "Correct those rows to pending, claimed, completed, failed, or cancelled "
+            "before retrying the migration."
+        )
+
+    duplicate_live_miners = connection.execute(
+        sa.text(
+            """
+            SELECT request_payload ->> 'miner_id' AS miner_id
+            FROM minerops_agent_command_queue
+            WHERE command_type = 'miner_control'
+              AND command_status IN ('pending', 'claimed')
+              AND nullif(trim(request_payload ->> 'miner_id'), '') IS NOT NULL
+            GROUP BY request_payload ->> 'miner_id'
+            HAVING count(*) > 1
+            ORDER BY request_payload ->> 'miner_id'
+            """
+        )
+    ).scalars().all()
+    if duplicate_live_miners:
+        raise RuntimeError(
+            "Cannot upgrade to 0015: more than one pending or claimed miner_control "
+            "command exists for miner UUID(s): "
+            f"{_format_values(duplicate_live_miners)}. Resolve or cancel the duplicate "
+            "live commands before retrying the migration; no queue history was changed."
+        )
+
+    op.add_column(
+        "minerops_site_agents",
+        sa.Column("site_id", postgresql.UUID(as_uuid=True), nullable=True),
+    )
+    op.create_foreign_key(
+        "fk_minerops_site_agents_site_id",
+        "minerops_site_agents",
+        "sites",
+        ["site_id"],
+        ["id"],
+        ondelete="RESTRICT",
+    )
+    op.create_index(
+        "uq_minerops_site_agents_site_id",
+        "minerops_site_agents",
+        ["site_id"],
+        unique=True,
+        postgresql_where=sa.text("site_id IS NOT NULL"),
+    )
+    op.create_check_constraint(
+        "ck_minerops_agent_command_queue_status",
+        "minerops_agent_command_queue",
+        "command_status IN ('pending', 'claimed', 'completed', 'failed', 'cancelled')",
+    )
+    op.create_index(
+        "uq_agent_queue_live_miner_control",
+        "minerops_agent_command_queue",
+        [sa.text("(request_payload ->> 'miner_id')")],
+        unique=True,
+        postgresql_where=sa.text(
+            "command_type = 'miner_control' "
+            "AND command_status IN ('pending', 'claimed')"
+        ),
+    )
+    op.create_index(
+        "idx_agent_queue_miner_control_history",
+        "minerops_agent_command_queue",
+        [
+            sa.text("(request_payload ->> 'miner_id')"),
+            sa.text("created_at DESC"),
+            sa.text("id DESC"),
+        ],
+        postgresql_where=sa.text("command_type = 'miner_control'"),
+    )
+
+
+def downgrade() -> None:
+    op.drop_index(
+        "idx_agent_queue_miner_control_history",
+        table_name="minerops_agent_command_queue",
+    )
+    op.drop_index(
+        "uq_agent_queue_live_miner_control",
+        table_name="minerops_agent_command_queue",
+    )
+    op.drop_constraint(
+        "ck_minerops_agent_command_queue_status",
+        "minerops_agent_command_queue",
+        type_="check",
+    )
+    op.drop_index(
+        "uq_minerops_site_agents_site_id",
+        table_name="minerops_site_agents",
+    )
+    op.drop_constraint(
+        "fk_minerops_site_agents_site_id",
+        "minerops_site_agents",
+        type_="foreignkey",
+    )
+    op.drop_column("minerops_site_agents", "site_id")

backend/alembic/versions/0016_agent_zones.py

@@ -0,0 +1,365 @@
+"""add agent zones
+
+Revision ID: 0016_agent_zones
+Revises: 0015_miner_control_foundation
+Create Date: 2026-08-25
+"""
+
+from typing import Sequence, Union
+
+import sqlalchemy as sa
+from alembic import op
+from sqlalchemy.dialects import postgresql
+
+
+revision: str = "0016_agent_zones"
+down_revision: Union[str, None] = "0015_miner_control_foundation"
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+DEFAULT_ZONE_NAME = "Default Zone"
+
+
+def _format_rows(rows: list[tuple]) -> str:
+    return ", ".join("/".join(str(value) for value in row) for row in rows)
+
+
+def upgrade() -> None:
+    op.create_table(
+        "agent_zones",
+        sa.Column(
+            "id",
+            postgresql.UUID(as_uuid=True),
+            primary_key=True,
+            server_default=sa.text("gen_random_uuid()"),
+        ),
+        sa.Column(
+            "site_id",
+            postgresql.UUID(as_uuid=True),
+            sa.ForeignKey("sites.id", ondelete="RESTRICT"),
+            nullable=False,
+        ),
+        sa.Column("name", sa.Text(), nullable=False),
+        sa.Column("description", sa.Text(), nullable=True),
+        sa.Column(
+            "is_enabled", sa.Boolean(), nullable=False, server_default=sa.text("true")
+        ),
+        sa.Column(
+            "created_at",
+            sa.DateTime(timezone=True),
+            nullable=False,
+            server_default=sa.text("now()"),
+        ),
+        sa.Column(
+            "updated_at",
+            sa.DateTime(timezone=True),
+            nullable=False,
+            server_default=sa.text("now()"),
+        ),
+        sa.CheckConstraint(
+            "name = trim(name) AND trim(name) <> '' AND char_length(name) <= 120",
+            name="ck_agent_zones_name",
+        ),
+        sa.UniqueConstraint("id", "site_id", name="uq_agent_zones_id_site_id"),
+    )
+    op.create_index("idx_agent_zones_site_id", "agent_zones", ["site_id"])
+    op.create_index(
+        "uq_agent_zones_active_site_name",
+        "agent_zones",
+        ["site_id", sa.text("lower(name)")],
+        unique=True,
+        postgresql_where=sa.text("is_enabled"),
+    )
+
+    op.create_table(
+        "agent_zone_network_ranges",
+        sa.Column(
+            "id",
+            postgresql.UUID(as_uuid=True),
+            primary_key=True,
+            server_default=sa.text("gen_random_uuid()"),
+        ),
+        sa.Column(
+            "agent_zone_id",
+            postgresql.UUID(as_uuid=True),
+            sa.ForeignKey("agent_zones.id", ondelete="CASCADE"),
+            nullable=False,
+        ),
+        sa.Column("network", postgresql.CIDR(), nullable=False),
+        sa.Column(
+            "created_at",
+            sa.DateTime(timezone=True),
+            nullable=False,
+            server_default=sa.text("now()"),
+        ),
+        sa.UniqueConstraint(
+            "agent_zone_id", "network", name="uq_agent_zone_network_ranges_zone_network"
+        ),
+    )
+    op.create_index(
+        "idx_agent_zone_network_ranges_zone_id",
+        "agent_zone_network_ranges",
+        ["agent_zone_id"],
+    )
+
+    op.add_column(
+        "miners",
+        sa.Column("agent_zone_id", postgresql.UUID(as_uuid=True), nullable=True),
+    )
+    op.create_check_constraint(
+        "ck_miners_agent_zone_requires_site",
+        "miners",
+        "agent_zone_id IS NULL OR site_id IS NOT NULL",
+    )
+    op.create_foreign_key(
+        "fk_miners_agent_zone_site",
+        "miners",
+        "agent_zones",
+        ["agent_zone_id", "site_id"],
+        ["id", "site_id"],
+        ondelete="RESTRICT",
+    )
+    op.create_index("idx_miners_agent_zone_id", "miners", ["agent_zone_id"])
+
+    op.add_column(
+        "minerops_site_agents",
+        sa.Column("agent_zone_id", postgresql.UUID(as_uuid=True), nullable=True),
+    )
+    op.create_check_constraint(
+        "ck_minerops_site_agents_zone_requires_site",
+        "minerops_site_agents",
+        "agent_zone_id IS NULL OR site_id IS NOT NULL",
+    )
+    op.create_foreign_key(
+        "fk_minerops_site_agents_zone_site",
+        "minerops_site_agents",
+        "agent_zones",
+        ["agent_zone_id", "site_id"],
+        ["id", "site_id"],
+        ondelete="RESTRICT",
+    )
+
+    op.add_column(
+        "minerops_agent_snapshots",
+        sa.Column("agent_zone_id", postgresql.UUID(as_uuid=True), nullable=True),
+    )
+    op.create_foreign_key(
+        "fk_minerops_agent_snapshots_agent_zone_id",
+        "minerops_agent_snapshots",
+        "agent_zones",
+        ["agent_zone_id"],
+        ["id"],
+        ondelete="RESTRICT",
+    )
+    op.create_index(
+        "idx_minerops_agent_snapshots_agent_zone_id",
+        "minerops_agent_snapshots",
+        ["agent_zone_id"],
+    )
+
+    op.add_column(
+        "minerops_agent_discoveries",
+        sa.Column("agent_zone_id", postgresql.UUID(as_uuid=True), nullable=True),
+    )
+    op.create_foreign_key(
+        "fk_minerops_agent_discoveries_agent_zone_id",
+        "minerops_agent_discoveries",
+        "agent_zones",
+        ["agent_zone_id"],
+        ["id"],
+        ondelete="RESTRICT",
+    )
+    op.create_index(
+        "idx_minerops_agent_discoveries_agent_zone_id",
+        "minerops_agent_discoveries",
+        ["agent_zone_id"],
+    )
+
+    connection = op.get_bind()
+    connection.execute(
+        sa.text(
+            """
+            INSERT INTO agent_zones (site_id, name)
+            SELECT sites.id, :default_name
+            FROM sites
+            ORDER BY sites.id
+            """
+        ),
+        {"default_name": DEFAULT_ZONE_NAME},
+    )
+    connection.execute(
+        sa.text(
+            """
+            UPDATE miners AS miner
+            SET agent_zone_id = zone.id
+            FROM agent_zones AS zone
+            WHERE miner.site_id = zone.site_id
+              AND zone.name = :default_name
+              AND miner.agent_zone_id IS NULL
+            """
+        ),
+        {"default_name": DEFAULT_ZONE_NAME},
+    )
+    connection.execute(
+        sa.text(
+            """
+            UPDATE minerops_site_agents AS agent
+            SET agent_zone_id = zone.id
+            FROM agent_zones AS zone
+            WHERE agent.site_id = zone.site_id
+              AND zone.name = :default_name
+              AND agent.agent_zone_id IS NULL
+            """
+        ),
+        {"default_name": DEFAULT_ZONE_NAME},
+    )
+
+    connection.execute(
+        sa.text(
+            """
+            UPDATE minerops_agent_snapshots AS snapshot
+            SET agent_zone_id = agent.agent_zone_id
+            FROM minerops_site_agents AS agent
+            WHERE snapshot.agent_id = agent.agent_id
+              AND agent.agent_zone_id IS NOT NULL
+              AND snapshot.agent_zone_id IS NULL
+            """
+        )
+    )
+    connection.execute(
+        sa.text(
+            """
+            UPDATE minerops_agent_discoveries AS discovery
+            SET agent_zone_id = agent.agent_zone_id
+            FROM minerops_site_agents AS agent
+            WHERE discovery.agent_id = agent.agent_id
+              AND agent.agent_zone_id IS NOT NULL
+              AND discovery.agent_zone_id IS NULL
+            """
+        )
+    )
+
+    op.create_index(
+        "uq_minerops_site_agents_agent_zone_id",
+        "minerops_site_agents",
+        ["agent_zone_id"],
+        unique=True,
+        postgresql_where=sa.text("agent_zone_id IS NOT NULL"),
+    )
+    op.drop_index(
+        "uq_minerops_site_agents_site_id", table_name="minerops_site_agents"
+    )
+
+
+def downgrade() -> None:
+    connection = op.get_bind()
+
+    duplicate_site_agents = connection.execute(
+        sa.text(
+            """
+            SELECT site_id::text, count(*)
+            FROM minerops_site_agents
+            WHERE site_id IS NOT NULL
+            GROUP BY site_id
+            HAVING count(*) > 1
+            ORDER BY site_id
+            """
+        )
+    ).all()
+    if duplicate_site_agents:
+        raise RuntimeError(
+            "Cannot downgrade 0016 to 0015: multiple Agent installations are "
+            "assigned within Site(s): "
+            f"{_format_rows(list(duplicate_site_agents))}. Move or unassign Agents "
+            "until each Site has at most one Agent before retrying; no Agent Zone "
+            "data was changed."
+        )
+
+    non_reducible_zones = connection.execute(
+        sa.text(
+            """
+            SELECT site_id::text, count(*)
+            FROM agent_zones
+            GROUP BY site_id
+            HAVING count(*) > 1
+               OR bool_or(name <> :default_name OR description IS NOT NULL OR NOT is_enabled)
+            ORDER BY site_id
+            """
+        ),
+        {"default_name": DEFAULT_ZONE_NAME},
+    ).all()
+    range_count = connection.execute(
+        sa.text("SELECT count(*) FROM agent_zone_network_ranges")
+    ).scalar_one()
+    if non_reducible_zones or range_count:
+        detail = _format_rows(list(non_reducible_zones)) or "network ranges exist"
+        raise RuntimeError(
+            "Cannot downgrade 0016 to 0015: Agent Zone configuration cannot be "
+            f"represented by the one-Agent-per-Site model ({detail}). Remove "
+            "additional/custom Zones and Zone network ranges before retrying; no "
+            "Agent Zone data was changed."
+        )
+
+    op.create_index(
+        "uq_minerops_site_agents_site_id",
+        "minerops_site_agents",
+        ["site_id"],
+        unique=True,
+        postgresql_where=sa.text("site_id IS NOT NULL"),
+    )
+    op.drop_index(
+        "uq_minerops_site_agents_agent_zone_id",
+        table_name="minerops_site_agents",
+    )
+
+    op.drop_index(
+        "idx_minerops_agent_discoveries_agent_zone_id",
+        table_name="minerops_agent_discoveries",
+    )
+    op.drop_constraint(
+        "fk_minerops_agent_discoveries_agent_zone_id",
+        "minerops_agent_discoveries",
+        type_="foreignkey",
+    )
+    op.drop_column("minerops_agent_discoveries", "agent_zone_id")
+
+    op.drop_index(
+        "idx_minerops_agent_snapshots_agent_zone_id",
+        table_name="minerops_agent_snapshots",
+    )
+    op.drop_constraint(
+        "fk_minerops_agent_snapshots_agent_zone_id",
+        "minerops_agent_snapshots",
+        type_="foreignkey",
+    )
+    op.drop_column("minerops_agent_snapshots", "agent_zone_id")
+
+    op.drop_constraint(
+        "fk_minerops_site_agents_zone_site",
+        "minerops_site_agents",
+        type_="foreignkey",
+    )
+    op.drop_constraint(
+        "ck_minerops_site_agents_zone_requires_site",
+        "minerops_site_agents",
+        type_="check",
+    )
+    op.drop_column("minerops_site_agents", "agent_zone_id")
+
+    op.drop_index("idx_miners_agent_zone_id", table_name="miners")
+    op.drop_constraint(
+        "fk_miners_agent_zone_site", "miners", type_="foreignkey"
+    )
+    op.drop_constraint(
+        "ck_miners_agent_zone_requires_site", "miners", type_="check"
+    )
+    op.drop_column("miners", "agent_zone_id")
+
+    op.drop_index(
+        "idx_agent_zone_network_ranges_zone_id",
+        table_name="agent_zone_network_ranges",
+    )
+    op.drop_table("agent_zone_network_ranges")
+    op.drop_index("uq_agent_zones_active_site_name", table_name="agent_zones")
+    op.drop_index("idx_agent_zones_site_id", table_name="agent_zones")
+    op.drop_table("agent_zones")

backend/alembic/versions/0017_agent_enrollment.py

@@ -0,0 +1,333 @@
+"""add secure Agent enrollment and per-Agent credential storage
+
+Revision ID: 0017_agent_enrollment
+Revises: 0016_agent_zones
+Create Date: 2026-08-26
+"""
+
+from typing import Sequence, Union
+
+import sqlalchemy as sa
+from alembic import op
+from sqlalchemy.dialects import postgresql
+
+
+revision: str = "0017_agent_enrollment"
+down_revision: Union[str, None] = "0016_agent_zones"
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    # Per-Agent credentials are additive. Existing Agents retain NULL credential
+    # fields and therefore remain eligible for the temporary legacy shared-secret
+    # authentication path until explicitly migrated.
+    op.add_column(
+        "minerops_site_agents",
+        sa.Column("display_name", sa.Text(), nullable=True),
+    )
+    op.add_column(
+        "minerops_site_agents",
+        sa.Column("agent_secret_hash", sa.Text(), nullable=True),
+    )
+    op.add_column(
+        "minerops_site_agents",
+        sa.Column(
+            "credential_created_at",
+            sa.DateTime(timezone=True),
+            nullable=True,
+        ),
+    )
+    op.add_column(
+        "minerops_site_agents",
+        sa.Column(
+            "credential_revoked_at",
+            sa.DateTime(timezone=True),
+            nullable=True,
+        ),
+    )
+
+    op.create_check_constraint(
+        "ck_minerops_site_agents_display_name",
+        "minerops_site_agents",
+        """
+        display_name IS NULL
+        OR (
+            btrim(display_name) <> ''
+            AND char_length(display_name) <= 120
+        )
+        """,
+    )
+
+    op.create_check_constraint(
+        "ck_minerops_site_agents_secret_hash",
+        "minerops_site_agents",
+        """
+        agent_secret_hash IS NULL
+        OR agent_secret_hash ~ '^[0-9a-f]{64}$'
+        """,
+    )
+
+    op.create_check_constraint(
+        "ck_minerops_site_agents_credential_pair",
+        "minerops_site_agents",
+        """
+        (
+            agent_secret_hash IS NULL
+            AND credential_created_at IS NULL
+        )
+        OR (
+            agent_secret_hash IS NOT NULL
+            AND credential_created_at IS NOT NULL
+        )
+        """,
+    )
+
+    op.create_check_constraint(
+        "ck_minerops_site_agents_credential_revoked_time",
+        "minerops_site_agents",
+        """
+        credential_revoked_at IS NULL
+        OR (
+            credential_created_at IS NOT NULL
+            AND credential_revoked_at >= credential_created_at
+        )
+        """,
+    )
+
+    op.create_index(
+        "uq_minerops_site_agents_agent_secret_hash",
+        "minerops_site_agents",
+        ["agent_secret_hash"],
+        unique=True,
+        postgresql_where=sa.text("agent_secret_hash IS NOT NULL"),
+    )
+
+    op.create_table(
+        "agent_enrollments",
+        sa.Column(
+            "id",
+            postgresql.UUID(as_uuid=True),
+            primary_key=True,
+            server_default=sa.text("gen_random_uuid()"),
+        ),
+        sa.Column("token_hash", sa.Text(), nullable=False),
+        sa.Column(
+            "site_id",
+            postgresql.UUID(as_uuid=True),
+            nullable=False,
+        ),
+        sa.Column(
+            "agent_zone_id",
+            postgresql.UUID(as_uuid=True),
+            nullable=False,
+        ),
+        sa.Column("display_name", sa.Text(), nullable=False),
+        sa.Column(
+            "created_by_user_id",
+            postgresql.UUID(as_uuid=True),
+            sa.ForeignKey("users.id", ondelete="SET NULL"),
+            nullable=True,
+        ),
+        sa.Column(
+            "created_at",
+            sa.DateTime(timezone=True),
+            nullable=False,
+            server_default=sa.text("now()"),
+        ),
+        sa.Column(
+            "expires_at",
+            sa.DateTime(timezone=True),
+            nullable=False,
+        ),
+        sa.Column(
+            "used_at",
+            sa.DateTime(timezone=True),
+            nullable=True,
+        ),
+        sa.Column(
+            "revoked_at",
+            sa.DateTime(timezone=True),
+            nullable=True,
+        ),
+        sa.Column("enrolled_agent_id", sa.Text(), nullable=True),
+        sa.ForeignKeyConstraint(
+            ["agent_zone_id", "site_id"],
+            ["agent_zones.id", "agent_zones.site_id"],
+            name="fk_agent_enrollments_zone_site",
+            ondelete="RESTRICT",
+        ),
+        sa.ForeignKeyConstraint(
+            ["enrolled_agent_id"],
+            ["minerops_site_agents.agent_id"],
+            name="fk_agent_enrollments_agent",
+            ondelete="RESTRICT",
+        ),
+        sa.CheckConstraint(
+            "token_hash ~ '^[0-9a-f]{64}$'",
+            name="ck_agent_enrollments_token_hash",
+        ),
+        sa.CheckConstraint(
+            "btrim(display_name) <> '' AND char_length(display_name) <= 120",
+            name="ck_agent_enrollments_display_name",
+        ),
+        sa.CheckConstraint(
+            "expires_at > created_at",
+            name="ck_agent_enrollments_expiry",
+        ),
+        sa.CheckConstraint(
+            "used_at IS NULL OR used_at >= created_at",
+            name="ck_agent_enrollments_used_time",
+        ),
+        sa.CheckConstraint(
+            "used_at IS NULL OR used_at <= expires_at",
+            name="ck_agent_enrollments_used_before_expiry",
+        ),
+        sa.CheckConstraint(
+            "revoked_at IS NULL OR revoked_at >= created_at",
+            name="ck_agent_enrollments_revoked_time",
+        ),
+        sa.CheckConstraint(
+            "NOT (used_at IS NOT NULL AND revoked_at IS NOT NULL)",
+            name="ck_agent_enrollments_terminal_state",
+        ),
+        sa.CheckConstraint(
+            """
+            (
+                used_at IS NULL
+                AND enrolled_agent_id IS NULL
+            )
+            OR (
+                used_at IS NOT NULL
+                AND enrolled_agent_id IS NOT NULL
+            )
+            """,
+            name="ck_agent_enrollments_agent_when_used",
+        ),
+    )
+
+    op.create_index(
+        "uq_agent_enrollments_token_hash",
+        "agent_enrollments",
+        ["token_hash"],
+        unique=True,
+    )
+
+    # PostgreSQL cannot use now() in a partial-index predicate because now() is
+    # not immutable. Therefore "open" means unused and unrevoked. Creation code
+    # will revoke an old expired/open enrollment before inserting a replacement.
+    op.create_index(
+        "uq_agent_enrollments_open_zone",
+        "agent_enrollments",
+        ["agent_zone_id"],
+        unique=True,
+        postgresql_where=sa.text(
+            "used_at IS NULL AND revoked_at IS NULL"
+        ),
+    )
+
+    op.create_index(
+        "uq_agent_enrollments_enrolled_agent",
+        "agent_enrollments",
+        ["enrolled_agent_id"],
+        unique=True,
+        postgresql_where=sa.text("enrolled_agent_id IS NOT NULL"),
+    )
+
+    op.create_index(
+        "idx_agent_enrollments_site_id",
+        "agent_enrollments",
+        ["site_id"],
+    )
+
+    op.create_index(
+        "idx_agent_enrollments_created_at",
+        "agent_enrollments",
+        ["created_at"],
+    )
+
+
+def downgrade() -> None:
+    # 0016 has nowhere to represent enrollment history or per-Agent
+    # credentials. Refuse before destructive DDL if either has been used.
+    connection = op.get_bind()
+
+    enrollment_count = connection.execute(
+        sa.text("SELECT COUNT(*) FROM agent_enrollments")
+    ).scalar_one()
+
+    credential_count = connection.execute(
+        sa.text(
+            """
+            SELECT COUNT(*)
+            FROM minerops_site_agents
+            WHERE display_name IS NOT NULL
+               OR agent_secret_hash IS NOT NULL
+               OR credential_created_at IS NOT NULL
+               OR credential_revoked_at IS NOT NULL
+            """
+        )
+    ).scalar_one()
+
+    if enrollment_count:
+        raise RuntimeError(
+            "Cannot downgrade 0017: Agent enrollment history exists"
+        )
+
+    if credential_count:
+        raise RuntimeError(
+            "Cannot downgrade 0017: per-Agent credentials exist"
+        )
+
+    op.drop_index(
+        "idx_agent_enrollments_created_at",
+        table_name="agent_enrollments",
+    )
+    op.drop_index(
+        "idx_agent_enrollments_site_id",
+        table_name="agent_enrollments",
+    )
+    op.drop_index(
+        "uq_agent_enrollments_enrolled_agent",
+        table_name="agent_enrollments",
+    )
+    op.drop_index(
+        "uq_agent_enrollments_open_zone",
+        table_name="agent_enrollments",
+    )
+    op.drop_index(
+        "uq_agent_enrollments_token_hash",
+        table_name="agent_enrollments",
+    )
+    op.drop_table("agent_enrollments")
+
+    op.drop_index(
+        "uq_minerops_site_agents_agent_secret_hash",
+        table_name="minerops_site_agents",
+    )
+
+    op.drop_constraint(
+        "ck_minerops_site_agents_credential_revoked_time",
+        "minerops_site_agents",
+        type_="check",
+    )
+    op.drop_constraint(
+        "ck_minerops_site_agents_credential_pair",
+        "minerops_site_agents",
+        type_="check",
+    )
+    op.drop_constraint(
+        "ck_minerops_site_agents_secret_hash",
+        "minerops_site_agents",
+        type_="check",
+    )
+    op.drop_constraint(
+        "ck_minerops_site_agents_display_name",
+        "minerops_site_agents",
+        type_="check",
+    )
+
+    op.drop_column("minerops_site_agents", "credential_revoked_at")
+    op.drop_column("minerops_site_agents", "credential_created_at")
+    op.drop_column("minerops_site_agents", "agent_secret_hash")
+    op.drop_column("minerops_site_agents", "display_name")

backend/alembic/versions/0018_legacy_agent_routing.py

@@ -0,0 +1,259 @@
+"""route pre-Zone Agent installations without rewriting ownership history
+
+Revision ID: 0018_legacy_agent_routing
+Revises: 0017_agent_enrollment
+Create Date: 2026-08-28
+"""
+
+from typing import Sequence, Union
+
+import sqlalchemy as sa
+from alembic import op
+
+
+revision: str = "0018_legacy_agent_routing"
+down_revision: Union[str, None] = "0017_agent_enrollment"
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+DEFAULT_ZONE_NAME = "Default Zone"
+
+# Every preflight and the eventual Site UPDATE use this exact resolver. An
+# exact trim/case-folded name match wins. The sole-Site fallback applies only
+# when there are zero exact matches and exactly one durable Site in the whole
+# database. Ambiguous exact matches and unresolved multi-Site installations
+# deliberately produce NULL resolved_site_id and fail before any UPDATE.
+RESOLVED_AGENT_SITES_CTE = """
+site_catalog AS (
+    SELECT count(*) AS site_count,
+           (array_agg(id ORDER BY id))[1] AS sole_site_id
+    FROM sites
+),
+unassigned_exact_matches AS (
+    SELECT agent.agent_id,
+           agent.site_name,
+           count(site.id) AS exact_match_count,
+           (
+               array_agg(site.id ORDER BY site.id)
+               FILTER (WHERE site.id IS NOT NULL)
+           )[1] AS exact_site_id
+    FROM minerops_site_agents AS agent
+    LEFT JOIN sites AS site
+      ON lower(btrim(site.name)) = lower(btrim(agent.site_name))
+    WHERE agent.site_id IS NULL
+    GROUP BY agent.agent_id, agent.site_name
+),
+resolved_unassigned_agents AS (
+    SELECT match.agent_id,
+           match.site_name,
+           match.exact_match_count,
+           catalog.site_count,
+           CASE
+               WHEN match.exact_match_count = 1
+                   THEN match.exact_site_id
+               WHEN match.exact_match_count = 0
+                    AND catalog.site_count = 1
+                   THEN catalog.sole_site_id
+               ELSE NULL
+           END AS resolved_site_id
+    FROM unassigned_exact_matches AS match
+    CROSS JOIN site_catalog AS catalog
+)
+"""
+
+
+def _format_rows(rows: list[tuple]) -> str:
+    return ", ".join("/".join(repr(str(value)) for value in row) for row in rows)
+
+
+def upgrade() -> None:
+    connection = op.get_bind()
+
+    # Keep every preflight result stable until the corresponding routing and
+    # history updates commit. Production must still take the Hub and all queue
+    # producers offline before migration; these locks are the database-level
+    # backstop against an accidental concurrent Site, Zone, Agent, snapshot, or
+    # discovery write changing an already-checked assumption.
+    connection.execute(
+        sa.text(
+            """
+            LOCK TABLE
+                agent_zones,
+                minerops_agent_discoveries,
+                minerops_agent_snapshots,
+                minerops_site_agents,
+                sites
+            IN SHARE ROW EXCLUSIVE MODE
+            """
+        )
+    )
+
+    # Run every fail-closed preflight before the first UPDATE. Site resolution
+    # is intentionally limited to legacy rows without an explicit Site
+    # assignment; explicit site_id values are never candidates for replacement.
+    site_match_failures = connection.execute(
+        sa.text(
+            f"""
+            WITH {RESOLVED_AGENT_SITES_CTE}
+            SELECT agent_id, site_name, exact_match_count, site_count
+            FROM resolved_unassigned_agents
+            WHERE resolved_site_id IS NULL
+            ORDER BY agent_id
+            """
+        )
+    ).all()
+    if site_match_failures:
+        raise RuntimeError(
+            "Cannot route legacy Agent installations: each unassigned Agent "
+            "must have exactly one Site name match after trim/case folding, "
+            "or zero exact matches while the database contains exactly one "
+            "Site. Ambiguous exact matches and unmatched multi-Site "
+            "installations fail closed. Failing "
+            "agent/site/exact-match-count/site-count rows: "
+            f"{_format_rows(list(site_match_failures))}. Assign site_id "
+            "explicitly, make Site names unambiguous, or identify the correct "
+            "Site before retrying; no "
+            "Agent, miner, MAC, queue, snapshot, or discovery data was changed."
+        )
+
+    default_zone_failures = connection.execute(
+        sa.text(
+            f"""
+            WITH {RESOLVED_AGENT_SITES_CTE},
+            effective_agents AS (
+                SELECT agent.agent_id,
+                       coalesce(
+                           agent.site_id,
+                           resolved.resolved_site_id
+                       ) AS site_id
+                FROM minerops_site_agents AS agent
+                LEFT JOIN resolved_unassigned_agents AS resolved
+                  ON resolved.agent_id = agent.agent_id
+                WHERE agent.agent_zone_id IS NULL
+            )
+            SELECT agent.agent_id, agent.site_id::text, count(zone.id)
+            FROM effective_agents AS agent
+            LEFT JOIN agent_zones AS zone
+              ON zone.site_id = agent.site_id
+             AND zone.is_enabled
+             AND lower(btrim(zone.name)) = lower(:default_name)
+            GROUP BY agent.agent_id, agent.site_id
+            HAVING count(zone.id) <> 1
+            ORDER BY agent.agent_id
+            """
+        ),
+        {"default_name": DEFAULT_ZONE_NAME},
+    ).all()
+    if default_zone_failures:
+        raise RuntimeError(
+            "Cannot route legacy Agent installations: each Agent without an "
+            "explicit Zone must have exactly one enabled Default Zone in its "
+            "effective Site. Failing agent/site/count rows: "
+            f"{_format_rows(list(default_zone_failures))}. Repair the Site's "
+            "Default Zone or assign agent_zone_id explicitly before retrying; "
+            "no data was changed."
+        )
+
+    zone_conflicts = connection.execute(
+        sa.text(
+            f"""
+            WITH {RESOLVED_AGENT_SITES_CTE},
+            targets AS (
+                SELECT agent.agent_id, zone.id AS agent_zone_id
+                FROM minerops_site_agents AS agent
+                LEFT JOIN resolved_unassigned_agents AS resolved
+                  ON resolved.agent_id = agent.agent_id
+                JOIN agent_zones AS zone
+                  ON zone.site_id = coalesce(
+                      agent.site_id,
+                      resolved.resolved_site_id
+                  )
+                 AND zone.is_enabled
+                 AND lower(btrim(zone.name)) = lower(:default_name)
+                WHERE agent.agent_zone_id IS NULL
+            )
+            SELECT target.agent_zone_id::text,
+                   string_agg(target.agent_id, ',' ORDER BY target.agent_id),
+                   coalesce(string_agg(occupant.agent_id, ','
+                                       ORDER BY occupant.agent_id), '')
+            FROM targets AS target
+            LEFT JOIN minerops_site_agents AS occupant
+              ON occupant.agent_zone_id = target.agent_zone_id
+            GROUP BY target.agent_zone_id
+            HAVING count(DISTINCT target.agent_id) > 1
+                OR count(occupant.agent_id) > 0
+            ORDER BY target.agent_zone_id
+            """
+        ),
+        {"default_name": DEFAULT_ZONE_NAME},
+    ).all()
+    if zone_conflicts:
+        raise RuntimeError(
+            "Cannot route legacy Agent installations: one-Agent-per-Zone would "
+            "be violated. Failing zone/target Agents/current Agent rows: "
+            f"{_format_rows(list(zone_conflicts))}. Assign distinct enabled "
+            "Zones explicitly before retrying; no data was changed."
+        )
+
+    connection.execute(
+        sa.text(
+            f"""
+            WITH {RESOLVED_AGENT_SITES_CTE}
+            UPDATE minerops_site_agents AS agent
+            SET site_id = resolved.resolved_site_id
+            FROM resolved_unassigned_agents AS resolved
+            WHERE agent.agent_id = resolved.agent_id
+              AND agent.site_id IS NULL
+              AND resolved.resolved_site_id IS NOT NULL
+            """
+        )
+    )
+    connection.execute(
+        sa.text(
+            """
+            UPDATE minerops_site_agents AS agent
+            SET agent_zone_id = zone.id
+            FROM agent_zones AS zone
+            WHERE agent.site_id = zone.site_id
+              AND zone.is_enabled
+              AND lower(btrim(zone.name)) = lower(:default_name)
+              AND agent.agent_zone_id IS NULL
+            """
+        ),
+        {"default_name": DEFAULT_ZONE_NAME},
+    )
+    connection.execute(
+        sa.text(
+            """
+            UPDATE minerops_agent_snapshots AS snapshot
+            SET agent_zone_id = agent.agent_zone_id
+            FROM minerops_site_agents AS agent
+            WHERE snapshot.agent_id = agent.agent_id
+              AND snapshot.agent_zone_id IS NULL
+              AND agent.agent_zone_id IS NOT NULL
+            """
+        )
+    )
+    connection.execute(
+        sa.text(
+            """
+            UPDATE minerops_agent_discoveries AS discovery
+            SET agent_zone_id = agent.agent_zone_id
+            FROM minerops_site_agents AS agent
+            WHERE discovery.agent_id = agent.agent_id
+              AND discovery.agent_zone_id IS NULL
+              AND agent.agent_zone_id IS NOT NULL
+            """
+        )
+    )
+
+
+def downgrade() -> None:
+    # There is no durable, trustworthy way to distinguish values assigned here
+    # from assignments made by an operator after upgrade. Refuse instead of
+    # erasing potentially explicit production routing or historical attribution.
+    raise RuntimeError(
+        "Cannot downgrade 0018 automatically: legacy Site/Zone routing and "
+        "snapshot/discovery attribution may now be production data. Restore the "
+        "pre-upgrade database backup for rollback; no data was changed."
+    )

backend/alembic/versions/0019_agent_legacy_auth_retire.py

@@ -0,0 +1,308 @@
+"""make legacy Agent authentication retirement durable and one-way
+
+Revision ID: 0019_agent_legacy_auth_retire
+Revises: 0018_legacy_agent_routing
+Create Date: 2026-08-31
+"""
+
+from typing import Sequence, Union
+
+import sqlalchemy as sa
+from alembic import op
+
+
+revision: str = "0019_agent_legacy_auth_retire"
+down_revision: Union[str, None] = "0018_legacy_agent_routing"
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    # Keep the row-level value as a projection for operators and defense in
+    # depth. The independent identity table below is the authoritative record:
+    # it deliberately has no foreign key to the deletable current Agent row.
+    op.add_column(
+        "minerops_site_agents",
+        sa.Column(
+            "legacy_auth_disabled_at",
+            sa.DateTime(timezone=True),
+            nullable=True,
+        ),
+    )
+    op.create_table(
+        "agent_legacy_auth_retirements",
+        sa.Column("agent_id", sa.Text(), primary_key=True),
+        sa.Column(
+            "retired_at",
+            sa.DateTime(timezone=True),
+            nullable=False,
+            server_default=sa.text("clock_timestamp()"),
+        ),
+        sa.CheckConstraint(
+            "btrim(agent_id) <> ''",
+            name="ck_agent_legacy_auth_retirements_agent_id",
+        ),
+    )
+
+    connection = op.get_bind()
+    # Stabilize both credential sources until backfill and all enforcement
+    # triggers are installed. This preserves a single atomic migration view.
+    connection.execute(
+        sa.text(
+            """
+            LOCK TABLE minerops_site_agents, agent_enrollments
+            IN SHARE ROW EXCLUSIVE MODE
+            """
+        )
+    )
+
+    # Backfill every reliable indication that a per-Agent secret was issued.
+    # A used enrollment remains evidence even if credential columns were later
+    # cleared. Merely existing as an uncredentialed Agent is not evidence, so
+    # the production-shaped legacy Plexus identity remains eligible.
+    op.execute(
+        """
+        WITH credential_evidence AS (
+            SELECT
+                agent_id,
+                coalesce(
+                    credential_created_at,
+                    credential_revoked_at,
+                    clock_timestamp()
+                ) AS retired_at
+            FROM minerops_site_agents
+            WHERE agent_secret_hash IS NOT NULL
+               OR credential_created_at IS NOT NULL
+               OR credential_revoked_at IS NOT NULL
+
+            UNION ALL
+
+            SELECT enrolled_agent_id AS agent_id, used_at AS retired_at
+            FROM agent_enrollments
+            WHERE enrolled_agent_id IS NOT NULL
+              AND used_at IS NOT NULL
+        )
+        INSERT INTO agent_legacy_auth_retirements (agent_id, retired_at)
+        SELECT agent_id, min(retired_at)
+        FROM credential_evidence
+        GROUP BY agent_id
+        """
+    )
+    op.execute(
+        """
+        UPDATE minerops_site_agents AS agent
+        SET legacy_auth_disabled_at = retirement.retired_at
+        FROM agent_legacy_auth_retirements AS retirement
+        WHERE retirement.agent_id = agent.agent_id
+        """
+    )
+
+    op.create_check_constraint(
+        "ck_minerops_site_agents_credential_retires_legacy_auth",
+        "minerops_site_agents",
+        """
+        legacy_auth_disabled_at IS NOT NULL
+        OR (
+            agent_secret_hash IS NULL
+            AND credential_created_at IS NULL
+            AND credential_revoked_at IS NULL
+        )
+        """,
+    )
+
+    # The retirement ledger is append-only for ordinary database operations.
+    # Migration rollback can still DROP the empty table, and a DBA retains the
+    # usual PostgreSQL superuser disaster-recovery capabilities.
+    op.execute(
+        """
+        CREATE FUNCTION minerops_prevent_legacy_auth_retirement_mutation()
+        RETURNS trigger
+        LANGUAGE plpgsql
+        AS $$
+        BEGIN
+            RAISE EXCEPTION
+                'legacy Agent authentication retirement history is append-only'
+                USING ERRCODE = '23514';
+        END;
+        $$
+        """
+    )
+    op.execute(
+        """
+        CREATE TRIGGER trg_agent_legacy_auth_retirements_immutable
+        BEFORE UPDATE OR DELETE
+        ON agent_legacy_auth_retirements
+        FOR EACH ROW
+        EXECUTE FUNCTION minerops_prevent_legacy_auth_retirement_mutation()
+        """
+    )
+    op.execute(
+        """
+        CREATE TRIGGER trg_agent_legacy_auth_retirements_no_truncate
+        BEFORE TRUNCATE
+        ON agent_legacy_auth_retirements
+        FOR EACH STATEMENT
+        EXECUTE FUNCTION minerops_prevent_legacy_auth_retirement_mutation()
+        """
+    )
+
+    # Any database path that stores credential evidence also creates the
+    # identity tombstone in the same transaction. The row marker is always
+    # synchronized from that tombstone, including on recreation of an Agent
+    # row whose identity was previously retired.
+    op.execute(
+        """
+        CREATE FUNCTION minerops_sync_agent_legacy_auth_retirement()
+        RETURNS trigger
+        LANGUAGE plpgsql
+        AS $$
+        DECLARE
+            identity_retired_at timestamptz;
+        BEGIN
+            IF NEW.agent_secret_hash IS NOT NULL
+               OR NEW.credential_created_at IS NOT NULL
+               OR NEW.credential_revoked_at IS NOT NULL
+               OR NEW.legacy_auth_disabled_at IS NOT NULL THEN
+                INSERT INTO agent_legacy_auth_retirements (
+                    agent_id,
+                    retired_at
+                )
+                VALUES (
+                    NEW.agent_id,
+                    coalesce(
+                        NEW.credential_created_at,
+                        NEW.legacy_auth_disabled_at,
+                        NEW.credential_revoked_at,
+                        clock_timestamp()
+                    )
+                )
+                ON CONFLICT (agent_id) DO NOTHING;
+            END IF;
+
+            SELECT retired_at
+            INTO identity_retired_at
+            FROM agent_legacy_auth_retirements
+            WHERE agent_id = NEW.agent_id;
+
+            IF identity_retired_at IS NOT NULL THEN
+                IF TG_OP = 'UPDATE'
+                   AND NEW.agent_id = OLD.agent_id
+                   AND NEW.legacy_auth_disabled_at
+                       IS DISTINCT FROM OLD.legacy_auth_disabled_at
+                   AND NEW.legacy_auth_disabled_at
+                       IS DISTINCT FROM identity_retired_at THEN
+                    RAISE EXCEPTION
+                        'legacy Agent authentication retirement is permanent'
+                        USING ERRCODE = '23514';
+                END IF;
+                NEW.legacy_auth_disabled_at := identity_retired_at;
+            ELSE
+                NEW.legacy_auth_disabled_at := NULL;
+            END IF;
+
+            RETURN NEW;
+        END;
+        $$
+        """
+    )
+    op.execute(
+        """
+        CREATE TRIGGER trg_minerops_site_agents_legacy_auth_retirement
+        BEFORE INSERT OR UPDATE OF
+            agent_id,
+            agent_secret_hash,
+            credential_created_at,
+            credential_revoked_at,
+            legacy_auth_disabled_at
+        ON minerops_site_agents
+        FOR EACH ROW
+        EXECUTE FUNCTION minerops_sync_agent_legacy_auth_retirement()
+        """
+    )
+
+    # Direct, one-way ledger inserts also refresh the optional row projection.
+    # Skip the nested case where the Agent trigger itself inserted the ledger
+    # row; that outer trigger already has NEW and will set the projection.
+    op.execute(
+        """
+        CREATE FUNCTION minerops_project_agent_legacy_auth_retirement()
+        RETURNS trigger
+        LANGUAGE plpgsql
+        AS $$
+        BEGIN
+            IF pg_trigger_depth() = 1 THEN
+                UPDATE minerops_site_agents
+                SET legacy_auth_disabled_at = NEW.retired_at
+                WHERE agent_id = NEW.agent_id;
+            END IF;
+            RETURN NEW;
+        END;
+        $$
+        """
+    )
+    op.execute(
+        """
+        CREATE TRIGGER trg_agent_legacy_auth_retirements_project
+        AFTER INSERT
+        ON agent_legacy_auth_retirements
+        FOR EACH ROW
+        EXECUTE FUNCTION minerops_project_agent_legacy_auth_retirement()
+        """
+    )
+
+
+def downgrade() -> None:
+    connection = op.get_bind()
+    retired_count = connection.execute(
+        sa.text(
+            """
+            SELECT count(*)
+            FROM agent_legacy_auth_retirements
+            """
+        )
+    ).scalar_one()
+
+    if retired_count:
+        raise RuntimeError(
+            "Cannot downgrade 0019: durable identity-level legacy-auth "
+            "retirement history exists. Restore the pre-upgrade database "
+            "backup rather than making retired Agent identities eligible for "
+            "legacy auth again."
+        )
+
+    op.execute(
+        """
+        DROP TRIGGER trg_agent_legacy_auth_retirements_project
+        ON agent_legacy_auth_retirements
+        """
+    )
+    op.execute("DROP FUNCTION minerops_project_agent_legacy_auth_retirement()")
+    op.execute(
+        """
+        DROP TRIGGER trg_minerops_site_agents_legacy_auth_retirement
+        ON minerops_site_agents
+        """
+    )
+    op.execute("DROP FUNCTION minerops_sync_agent_legacy_auth_retirement()")
+    op.execute(
+        """
+        DROP TRIGGER trg_agent_legacy_auth_retirements_no_truncate
+        ON agent_legacy_auth_retirements
+        """
+    )
+    op.execute(
+        """
+        DROP TRIGGER trg_agent_legacy_auth_retirements_immutable
+        ON agent_legacy_auth_retirements
+        """
+    )
+    op.execute(
+        "DROP FUNCTION minerops_prevent_legacy_auth_retirement_mutation()"
+    )
+    op.drop_constraint(
+        "ck_minerops_site_agents_credential_retires_legacy_auth",
+        "minerops_site_agents",
+        type_="check",
+    )
+    op.drop_column("minerops_site_agents", "legacy_auth_disabled_at")
+    op.drop_table("agent_legacy_auth_retirements")

backend/alembic/versions/0020_existing_agent_credential_transition.py

@@ -0,0 +1,100 @@
+"""bind one-time credential transitions to existing Agent identities
+
+Revision ID: 0020_existing_agent_transition
+Revises: 0019_agent_legacy_auth_retire
+Create Date: 2026-09-18
+"""
+
+from typing import Sequence, Union
+
+import sqlalchemy as sa
+from alembic import op
+
+
+revision: str = "0020_existing_agent_transition"
+down_revision: Union[str, None] = "0019_agent_legacy_auth_retire"
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    # NULL continues to mean a normal new-Agent enrollment. A non-NULL value
+    # is server-derived from the current Agent row and binds the one-time token
+    # to that exact durable identity without accepting browser routing input.
+    op.add_column(
+        "agent_enrollments",
+        sa.Column("target_agent_id", sa.Text(), nullable=True),
+    )
+    op.create_foreign_key(
+        "fk_agent_enrollments_target_agent",
+        "agent_enrollments",
+        "minerops_site_agents",
+        ["target_agent_id"],
+        ["agent_id"],
+        ondelete="RESTRICT",
+    )
+    op.create_check_constraint(
+        "ck_agent_enrollments_target_agent",
+        "agent_enrollments",
+        "target_agent_id IS NULL OR btrim(target_agent_id) <> ''",
+    )
+    op.create_check_constraint(
+        "ck_agent_enrollments_target_result",
+        "agent_enrollments",
+        """
+        target_agent_id IS NULL
+        OR enrolled_agent_id IS NULL
+        OR enrolled_agent_id = target_agent_id
+        """,
+    )
+    op.create_index(
+        "uq_agent_enrollments_open_target_agent",
+        "agent_enrollments",
+        ["target_agent_id"],
+        unique=True,
+        postgresql_where=sa.text(
+            "target_agent_id IS NOT NULL "
+            "AND used_at IS NULL AND revoked_at IS NULL"
+        ),
+    )
+
+
+def downgrade() -> None:
+    connection = op.get_bind()
+    transition_count = connection.execute(
+        sa.text(
+            """
+            SELECT count(*)
+            FROM agent_enrollments
+            WHERE target_agent_id IS NOT NULL
+            """
+        )
+    ).scalar_one()
+
+    if transition_count:
+        raise RuntimeError(
+            "Cannot downgrade 0020: existing-Agent credential transition "
+            "history exists. Restore the pre-upgrade database backup rather "
+            "than discarding the identity binding."
+        )
+
+    op.drop_index(
+        "uq_agent_enrollments_open_target_agent",
+        table_name="agent_enrollments",
+    )
+    op.drop_constraint(
+        "ck_agent_enrollments_target_result",
+        "agent_enrollments",
+        type_="check",
+    )
+    op.drop_constraint(
+        "ck_agent_enrollments_target_agent",
+        "agent_enrollments",
+        type_="check",
+    )
+    op.drop_constraint(
+        "fk_agent_enrollments_target_agent",
+        "agent_enrollments",
+        type_="foreignkey",
+    )
+    op.drop_column("agent_enrollments", "target_agent_id")

backend/app/agent_auth/__init__.py

@@ -0,0 +1 @@
+"""Per-Agent authentication support."""

backend/app/agent_auth/exceptions.py

@@ -0,0 +1,21 @@
+"""Domain errors for Agent authentication."""
+
+
+class AgentAuthenticationError(Exception):
+    """Base Agent authentication error."""
+
+
+class AgentAuthenticationUnavailable(AgentAuthenticationError):
+    """Agent authentication cannot currently be performed."""
+
+
+class AgentAuthenticationFailed(AgentAuthenticationError):
+    """The supplied Agent secret is invalid."""
+
+
+class AgentIdentityUnauthorized(AgentAuthenticationError):
+    """The supplied Agent identity is not authorized."""
+
+
+class AgentCredentialRevoked(AgentAuthenticationError):
+    """The Agent's permanent credential has been revoked."""

backend/app/agent_auth/repository.py

@@ -0,0 +1,53 @@
+"""PostgreSQL persistence for Agent authentication."""
+
+from collections.abc import Callable
+
+import psycopg
+from psycopg.rows import dict_row
+
+from app.config import settings
+
+
+ConnectionFactory = Callable[[], psycopg.Connection]
+
+
+def default_connection_factory() -> psycopg.Connection:
+    return psycopg.connect(
+        host=settings.postgres_host,
+        port=settings.postgres_port,
+        dbname=settings.postgres_db,
+        user=settings.postgres_user,
+        password=settings.postgres_password,
+        connect_timeout=5,
+    )
+
+
+class AgentAuthRepository:
+    def __init__(self, connection_factory: ConnectionFactory | None = None):
+        self._connection_factory = connection_factory or default_connection_factory
+
+    def get_credential(self, agent_id: str) -> dict | None:
+        connection = self._connection_factory()
+        try:
+            with connection.cursor(row_factory=dict_row) as cur:
+                cur.execute(
+                    """
+                    SELECT identity.agent_id,
+                           agent.agent_secret_hash,
+                           agent.credential_created_at,
+                           agent.credential_revoked_at,
+                           retirement.retired_at AS legacy_auth_disabled_at
+                    FROM (VALUES (%s::text)) AS identity(agent_id)
+                    LEFT JOIN minerops_site_agents AS agent
+                      ON agent.agent_id = identity.agent_id
+                    LEFT JOIN agent_legacy_auth_retirements AS retirement
+                      ON retirement.agent_id = identity.agent_id
+                    WHERE agent.agent_id IS NOT NULL
+                       OR retirement.agent_id IS NOT NULL
+                    """,
+                    (agent_id,),
+                )
+                row = cur.fetchone()
+                return dict(row) if row else None
+        finally:
+            connection.close()

backend/app/agent_auth/service.py

@@ -0,0 +1,102 @@
+"""Per-Agent authentication with bounded legacy compatibility."""
+
+import hashlib
+import hmac
+
+from app.agent_auth.exceptions import (
+    AgentAuthenticationFailed,
+    AgentAuthenticationUnavailable,
+    AgentCredentialRevoked,
+    AgentIdentityUnauthorized,
+)
+from app.config import settings
+
+
+def hash_agent_secret(secret: str) -> str:
+    """Hash a high-entropy machine-generated Agent secret for persistence."""
+    return hashlib.sha256(secret.encode("utf-8")).hexdigest()
+
+
+class AgentAuthService:
+    def __init__(self, repository):
+        self.repository = repository
+
+    def authenticate(self, agent_id: str | None, provided_secret: str | None) -> str:
+        identity = (agent_id or "").strip()
+        secret = (provided_secret or "").strip()
+
+        if not secret:
+            raise AgentAuthenticationFailed("Invalid or missing Agent secret")
+
+        # The production Alpha Agent predates the identity header. Missing-ID
+        # compatibility is therefore bound to exactly the configured legacy
+        # identity; no request value is allowed to select another Agent.
+        legacy_id = settings.minerops_agent_id.strip()
+        legacy_secret = settings.minerops_agent_shared_secret.strip()
+        missing_identity = not identity
+        if missing_identity:
+            if not legacy_id:
+                raise AgentAuthenticationUnavailable(
+                    "Legacy Agent authentication is not configured"
+                )
+            identity = legacy_id
+
+        credential = self.repository.get_credential(identity)
+
+        # Revocation is authoritative regardless of which credential path
+        # would otherwise apply. Never allow malformed or historical
+        # credential state to fall through to the legacy shared secret.
+        if credential and credential.get("credential_revoked_at") is not None:
+            raise AgentCredentialRevoked("Agent credential has been revoked")
+
+        # This value comes from the identity-level retirement ledger, not the
+        # deletable current Agent row. It is therefore authoritative even when
+        # the Agent was deleted and has not yet been recreated.
+        legacy_auth_retired = bool(
+            credential
+            and credential.get("legacy_auth_disabled_at") is not None
+        )
+
+        # Any Agent with a per-Agent credential is permanently on the new
+        # authentication path. The legacy shared secret must never authenticate
+        # that identity, even if the Agent later becomes revoked.
+        if credential and credential.get("agent_secret_hash"):
+            # Once the configured legacy identity has ever received a
+            # per-Agent credential, secret-only fallback is permanently
+            # disabled. The legacy global secret cannot authenticate it and a
+            # per-Agent secret cannot be used without an explicit identity.
+            if missing_identity:
+                raise AgentAuthenticationFailed(
+                    "Explicit Agent identity is required for enrolled Agents"
+                )
+
+            supplied_hash = hash_agent_secret(secret)
+            if not hmac.compare_digest(
+                supplied_hash,
+                str(credential["agent_secret_hash"]),
+            ):
+                raise AgentAuthenticationFailed("Invalid or missing Agent secret")
+
+            return identity
+
+        # The durable identity retirement survives Agent-row deletion,
+        # credential-field corruption, administrative mistakes, and future
+        # credential rotation workflows.
+        if legacy_auth_retired:
+            raise AgentAuthenticationFailed(
+                "Legacy Agent authentication has been permanently disabled"
+            )
+
+        # Temporary compatibility for the single pre-enrollment Agent.
+        if not legacy_id or not legacy_secret:
+            raise AgentAuthenticationUnavailable(
+                "Legacy Agent authentication is not configured"
+            )
+
+        if not hmac.compare_digest(identity, legacy_id):
+            raise AgentIdentityUnauthorized("Agent identity is not authorized")
+
+        if not hmac.compare_digest(secret, legacy_secret):
+            raise AgentAuthenticationFailed("Invalid or missing Agent secret")
+
+        return identity

backend/app/agent_commands/__init__.py

@@ -0,0 +1 @@
+"""Authenticated Agent command transport for MinerOps."""

backend/app/agent_commands/dependencies.py

@@ -0,0 +1,46 @@
+"""Dependencies for the authenticated Agent queue protocol."""
+
+from typing import Annotated
+
+from fastapi import Depends, Header, HTTPException
+
+from app.agent_auth.exceptions import (
+    AgentAuthenticationFailed,
+    AgentAuthenticationUnavailable,
+    AgentCredentialRevoked,
+    AgentIdentityUnauthorized,
+)
+from app.agent_auth.repository import AgentAuthRepository
+from app.agent_auth.service import AgentAuthService
+from app.agent_commands.repository import AgentCommandRepository
+from app.agent_commands.service import AgentCommandService
+
+
+def get_agent_command_service() -> AgentCommandService:
+    return AgentCommandService(AgentCommandRepository())
+
+
+def get_agent_auth_service() -> AgentAuthService:
+    return AgentAuthService(AgentAuthRepository())
+
+
+def require_agent_identity(
+    agent_id: Annotated[str | None, Header(alias="X-MinerOps-Agent-ID")] = None,
+    provided_secret: Annotated[
+        str | None, Header(alias="X-MinerOps-Agent-Secret")
+    ] = None,
+    service: AgentAuthService = Depends(get_agent_auth_service),
+) -> str:
+    try:
+        return service.authenticate(agent_id, provided_secret)
+    except AgentAuthenticationUnavailable as exc:
+        raise HTTPException(
+            status_code=503,
+            detail="Agent authentication is not configured",
+        ) from exc
+    except AgentAuthenticationFailed as exc:
+        raise HTTPException(status_code=401, detail=str(exc)) from exc
+    except AgentCredentialRevoked as exc:
+        raise HTTPException(status_code=403, detail=str(exc)) from exc
+    except AgentIdentityUnauthorized as exc:
+        raise HTTPException(status_code=403, detail=str(exc)) from exc

backend/app/agent_commands/exceptions.py

@@ -0,0 +1,17 @@
+"""Domain-neutral Agent command protocol errors."""
+
+
+class AgentCommandError(Exception):
+    """Base Agent command protocol error."""
+
+
+class AgentCommandNotFound(AgentCommandError):
+    """The submitted command identifier is unknown."""
+
+
+class AgentCommandConflict(AgentCommandError):
+    """The queue row cannot accept the requested transition."""
+
+
+class AgentResultValidationError(AgentCommandError):
+    """The Agent result does not match its command contract."""

backend/app/agent_commands/models.py

@@ -0,0 +1,57 @@
+"""Typed contracts for the Agent queue protocol."""
+
+from datetime import datetime
+from typing import Any, Literal
+
+from pydantic import BaseModel, ConfigDict, Field, model_validator
+
+
+class AgentCommand(BaseModel):
+    command_id: str
+    command_type: str
+    request_payload: dict[str, Any]
+    created_at: datetime
+
+
+class AgentCommandListResponse(BaseModel):
+    ok: Literal[True] = True
+    commands: list[AgentCommand]
+
+
+class MinerControlResultPayload(BaseModel):
+    model_config = ConfigDict(extra="forbid")
+
+    schema_version: Literal[1]
+    command_accepted: bool
+    verification_attempted: bool
+    verification_status: Literal[
+        "confirmed", "verification_failed", "unconfirmed", "unavailable"
+    ]
+    observed_service_state: None = None
+    observed_performance_mode: Literal["low", "normal", "high"] | None = None
+    failure_code: str | None = Field(
+        default=None, max_length=80, pattern=r"^[a-z0-9_]+$"
+    )
+
+    @model_validator(mode="after")
+    def validate_truthfulness(self) -> "MinerControlResultPayload":
+        if self.verification_status == "confirmed" and not self.verification_attempted:
+            raise ValueError("confirmed results require verification_attempted")
+        if not self.command_accepted and not self.failure_code:
+            raise ValueError("rejected commands require a failure_code")
+        return self
+
+
+class AgentCommandResultRequest(BaseModel):
+    model_config = ConfigDict(extra="forbid")
+
+    command_id: str = Field(min_length=1, max_length=128)
+    status: Literal["completed", "failed"]
+    result_payload: dict[str, Any] = Field(default_factory=dict)
+    error_message: str | None = Field(default=None, max_length=255)
+
+
+class AgentCommandResultResponse(BaseModel):
+    ok: Literal[True] = True
+    command_id: str
+    status: Literal["completed", "failed"]

backend/app/agent_commands/repository.py

@@ -0,0 +1,130 @@
+"""PostgreSQL persistence for Agent command transport."""
+
+from collections.abc import Callable
+from typing import Any
+
+import psycopg
+from psycopg.rows import dict_row
+from psycopg.types.json import Jsonb
+
+from app.agent_commands.exceptions import AgentCommandConflict, AgentCommandNotFound
+from app.config import settings
+
+
+ConnectionFactory = Callable[[], psycopg.Connection]
+
+CLAIM_COMMANDS_SQL = """
+WITH candidates AS (
+    SELECT id
+    FROM minerops_agent_command_queue
+    WHERE agent_id = %s
+      AND command_status = 'pending'
+    ORDER BY created_at, id
+    FOR UPDATE SKIP LOCKED
+    LIMIT %s
+)
+UPDATE minerops_agent_command_queue AS queue
+SET command_status = 'claimed', claimed_at = now()
+FROM candidates
+WHERE queue.id = candidates.id
+  AND queue.command_status = 'pending'
+RETURNING queue.id AS command_id, queue.command_type,
+          queue.request_payload, queue.created_at
+"""
+
+
+def default_connection_factory() -> psycopg.Connection:
+    return psycopg.connect(
+        host=settings.postgres_host,
+        port=settings.postgres_port,
+        dbname=settings.postgres_db,
+        user=settings.postgres_user,
+        password=settings.postgres_password,
+        connect_timeout=5,
+    )
+
+
+class AgentCommandRepository:
+    """Own queue locking and immutable terminal transitions."""
+
+    def __init__(self, connection_factory: ConnectionFactory | None = None):
+        self._connection_factory = connection_factory or default_connection_factory
+
+    def claim_pending(self, agent_id: str, limit: int = 5) -> list[dict]:
+        connection = self._connection_factory()
+        try:
+            with connection.cursor(row_factory=dict_row) as cur:
+                cur.execute(CLAIM_COMMANDS_SQL, (agent_id, limit))
+                rows = [dict(row) for row in cur.fetchall()]
+            connection.commit()
+            return rows
+        except Exception:
+            connection.rollback()
+            raise
+        finally:
+            connection.close()
+
+    def get_command(self, command_id: str) -> dict | None:
+        connection = self._connection_factory()
+        try:
+            with connection.cursor(row_factory=dict_row) as cur:
+                cur.execute(
+                    """
+                    SELECT id, agent_id, command_type, command_status, request_payload
+                    FROM minerops_agent_command_queue WHERE id = %s
+                    """,
+                    (command_id,),
+                )
+                row = cur.fetchone()
+                return dict(row) if row else None
+        finally:
+            connection.close()
+
+    def finish_command(
+        self,
+        command_id: str,
+        agent_id: str,
+        status: str,
+        result_payload: dict[str, Any],
+        error_message: str | None,
+    ) -> None:
+        connection = self._connection_factory()
+        try:
+            with connection.cursor(row_factory=dict_row) as cur:
+                cur.execute(
+                    """
+                    UPDATE minerops_agent_command_queue
+                    SET command_status = %s, result_payload = %s,
+                        error_message = %s, completed_at = now()
+                    WHERE id = %s AND agent_id = %s AND command_status = 'claimed'
+                    RETURNING id
+                    """,
+                    (status, Jsonb(result_payload), error_message, command_id, agent_id),
+                )
+                if cur.fetchone():
+                    connection.commit()
+                    return
+
+                cur.execute(
+                    """
+                    SELECT agent_id, command_status
+                    FROM minerops_agent_command_queue WHERE id = %s
+                    """,
+                    (command_id,),
+                )
+                row = cur.fetchone()
+                connection.rollback()
+                if not row:
+                    raise AgentCommandNotFound("Agent command not found")
+                if row["agent_id"] != agent_id:
+                    raise AgentCommandConflict("Agent command belongs to another Agent")
+                raise AgentCommandConflict(
+                    f"Agent command is {row['command_status']}, not claimed"
+                )
+        except (AgentCommandNotFound, AgentCommandConflict):
+            raise
+        except Exception:
+            connection.rollback()
+            raise
+        finally:
+            connection.close()

backend/app/agent_commands/router.py

@@ -0,0 +1,57 @@
+"""HTTP boundary for authenticated Agent command transport."""
+
+import logging
+from typing import Annotated
+
+from fastapi import APIRouter, Depends, HTTPException, Request
+
+from app.agent_commands.dependencies import get_agent_command_service, require_agent_identity
+from app.agent_commands.exceptions import (
+    AgentCommandConflict,
+    AgentCommandNotFound,
+    AgentResultValidationError,
+)
+from app.agent_commands.models import (
+    AgentCommandListResponse,
+    AgentCommandResultRequest,
+    AgentCommandResultResponse,
+)
+from app.agent_commands.service import AgentCommandService
+
+
+logger = logging.getLogger(__name__)
+router = APIRouter(prefix="/api/agent/commands", tags=["agent-commands"])
+AgentIdentity = Annotated[str, Depends(require_agent_identity)]
+AgentService = Annotated[AgentCommandService, Depends(get_agent_command_service)]
+
+
+@router.get("/pending", response_model=AgentCommandListResponse)
+def claim_pending_commands(
+    request: Request, agent_id: AgentIdentity, service: AgentService
+) -> AgentCommandListResponse:
+    before_claim = getattr(
+        request.app.state, "agent_command_before_claim", None
+    )
+    if callable(before_claim):
+        try:
+            before_claim()
+        except Exception:
+            logger.exception("Scheduled command materialization failed before Agent claim")
+    return AgentCommandListResponse(commands=service.claim(agent_id))
+
+
+@router.post("/result", response_model=AgentCommandResultResponse)
+def submit_command_result(
+    request: AgentCommandResultRequest,
+    agent_id: AgentIdentity,
+    service: AgentService,
+) -> AgentCommandResultResponse:
+    try:
+        service.submit_result(agent_id, request)
+    except AgentCommandNotFound as exc:
+        raise HTTPException(status_code=404, detail=str(exc)) from exc
+    except AgentCommandConflict as exc:
+        raise HTTPException(status_code=409, detail=str(exc)) from exc
+    except AgentResultValidationError as exc:
+        raise HTTPException(status_code=422, detail=str(exc)) from exc
+    return AgentCommandResultResponse(command_id=request.command_id, status=request.status)

backend/app/agent_commands/service.py

@@ -0,0 +1,87 @@
+"""Agent command transport coordination and result validation."""
+
+import re
+
+from pydantic import ValidationError
+
+from app.agent_commands.exceptions import (
+    AgentCommandConflict,
+    AgentCommandNotFound,
+    AgentResultValidationError,
+)
+from app.agent_commands.models import (
+    AgentCommand,
+    AgentCommandResultRequest,
+    MinerControlResultPayload,
+)
+from app.agent_commands.repository import AgentCommandRepository
+
+
+class AgentCommandService:
+    def __init__(self, repository: AgentCommandRepository):
+        self.repository = repository
+
+    def claim(self, agent_id: str) -> list[AgentCommand]:
+        return [
+            AgentCommand.model_validate(row)
+            for row in self.repository.claim_pending(agent_id)
+        ]
+
+    @staticmethod
+    def _legacy_error(value: str | None) -> str | None:
+        if not value:
+            return None
+        sanitized = re.sub(r"\b(?:\d{1,3}\.){3}\d{1,3}\b", "[address]", value)
+        return sanitized[:255]
+
+    def submit_result(
+        self, agent_id: str, request: AgentCommandResultRequest
+    ) -> None:
+        command = self.repository.get_command(request.command_id)
+        if not command:
+            raise AgentCommandNotFound("Agent command not found")
+        if command["agent_id"] != agent_id:
+            raise AgentCommandConflict("Agent command belongs to another Agent")
+        if command["command_status"] != "claimed":
+            raise AgentCommandConflict(
+                f"Agent command is {command['command_status']}, not claimed"
+            )
+
+        result_payload = request.result_payload
+        error_message = self._legacy_error(request.error_message)
+        if command["command_type"] == "miner_control":
+            try:
+                result = MinerControlResultPayload.model_validate(request.result_payload)
+            except ValidationError as exc:
+                raise AgentResultValidationError(
+                    "Invalid typed miner-control result"
+                ) from exc
+            if request.status == "completed" and not result.command_accepted:
+                raise AgentResultValidationError(
+                    "Completed miner-control results must be accepted"
+                )
+            if request.status == "failed" and result.command_accepted:
+                raise AgentResultValidationError(
+                    "Failed miner-control results cannot be accepted"
+                )
+            action = (command.get("request_payload") or {}).get("action")
+            if (
+                action in {"suspend", "resume"}
+                and result.command_accepted
+                and result.verification_status != "unconfirmed"
+            ):
+                raise AgentResultValidationError(
+                    "Accepted suspend and resume results must remain unconfirmed"
+                )
+            result_payload = result.model_dump(mode="json")
+            error_message = (
+                result.failure_code.replace("_", " ") if result.failure_code else None
+            )
+
+        self.repository.finish_command(
+            request.command_id,
+            agent_id,
+            request.status,
+            result_payload,
+            error_message,
+        )

backend/app/agent_enrollment/__init__.py

@@ -0,0 +1 @@
+"""Secure one-time Agent enrollment."""

backend/app/agent_enrollment/dependencies.py

@@ -0,0 +1,8 @@
+"""Dependency wiring for secure Agent enrollment."""
+
+from app.agent_enrollment.repository import AgentEnrollmentRepository
+from app.agent_enrollment.service import AgentEnrollmentService
+
+
+def get_agent_enrollment_service() -> AgentEnrollmentService:
+    return AgentEnrollmentService(AgentEnrollmentRepository())

backend/app/agent_enrollment/exceptions.py

@@ -0,0 +1,21 @@
+"""Domain exceptions for secure Agent enrollment."""
+
+
+class AgentEnrollmentError(Exception):
+    """Base Agent enrollment error."""
+
+
+class AgentEnrollmentNotFound(AgentEnrollmentError):
+    """The requested Site or Agent Zone does not exist."""
+
+
+class AgentEnrollmentConflict(AgentEnrollmentError):
+    """The requested enrollment conflicts with current Agent routing state."""
+
+
+class AgentEnrollmentTokenInvalid(AgentEnrollmentError):
+    """The supplied bootstrap token cannot be redeemed."""
+
+
+class AgentEnrollmentCredentialCollision(AgentEnrollmentError):
+    """A generated machine credential collided with an existing credential."""

backend/app/agent_enrollment/models.py

@@ -0,0 +1,153 @@
+"""Typed contracts for secure Agent enrollment."""
+
+from datetime import datetime
+from typing import Literal
+from uuid import UUID
+
+from pydantic import BaseModel, ConfigDict, Field, field_validator
+
+
+class AgentEnrollmentCreateRequest(BaseModel):
+    model_config = ConfigDict(extra="forbid")
+
+    site_id: UUID
+    agent_zone_id: UUID
+    display_name: str = Field(min_length=1, max_length=120)
+
+    @field_validator("display_name")
+    @classmethod
+    def normalize_display_name(cls, value: str) -> str:
+        normalized = value.strip()
+        if not normalized:
+            raise ValueError("display_name cannot be blank")
+        return normalized
+
+
+class AgentEnrollmentCreated(BaseModel):
+    id: UUID
+    site_id: UUID
+    site_name: str
+    agent_zone_id: UUID
+    agent_zone_name: str
+    display_name: str
+    created_at: datetime
+    expires_at: datetime
+    enrollment_token: str
+
+
+class AgentEnrollmentCreateResponse(BaseModel):
+    data: AgentEnrollmentCreated
+    meta: dict[str, object] = Field(default_factory=dict)
+    error: None = None
+
+
+class AgentEnrollmentSummary(BaseModel):
+    id: UUID
+    site_id: UUID
+    site_name: str
+    agent_zone_id: UUID
+    agent_zone_name: str
+    display_name: str
+    created_by_user_id: UUID | None = None
+    created_at: datetime
+    expires_at: datetime
+    used_at: datetime | None = None
+    revoked_at: datetime | None = None
+    target_agent_id: str | None = None
+    enrolled_agent_id: str | None = None
+    purpose: Literal["new_agent", "existing_agent_credential_transition"]
+    status: Literal["waiting", "used", "revoked", "expired"]
+
+
+class AgentEnrollmentListResponse(BaseModel):
+    data: list[AgentEnrollmentSummary]
+    meta: dict[str, object] = Field(default_factory=dict)
+    error: None = None
+
+
+class AgentEnrollRequest(BaseModel):
+    model_config = ConfigDict(extra="forbid")
+
+    token: str = Field(min_length=32, max_length=256)
+
+    @field_validator("token")
+    @classmethod
+    def normalize_token(cls, value: str) -> str:
+        normalized = value.strip()
+        if not normalized:
+            raise ValueError("token cannot be blank")
+        return normalized
+
+
+class AgentEnrollCredentials(BaseModel):
+    agent_id: str
+    agent_secret: str
+    site_id: UUID
+    site_name: str
+    agent_zone_id: UUID
+    agent_zone_name: str
+    display_name: str
+    ip_ranges: list[str] = Field(default_factory=list)
+
+
+class AgentEnrollResponse(BaseModel):
+    data: AgentEnrollCredentials
+    meta: dict[str, object] = Field(default_factory=dict)
+    error: None = None
+
+
+class AgentWindowsPackageRequest(AgentEnrollRequest):
+    """Short-lived token used to construct a Windows bootstrap package."""
+
+
+class AgentCredentialTransitionCreateRequest(BaseModel):
+    model_config = ConfigDict(extra="forbid")
+
+    agent_id: str = Field(min_length=1, max_length=255)
+
+    @field_validator("agent_id")
+    @classmethod
+    def normalize_agent_id(cls, value: str) -> str:
+        normalized = value.strip()
+        if not normalized:
+            raise ValueError("agent_id cannot be blank")
+        return normalized
+
+
+class AgentCredentialTransitionCreated(BaseModel):
+    id: UUID
+    target_agent_id: str
+    site_id: UUID
+    site_name: str
+    agent_zone_id: UUID
+    agent_zone_name: str
+    display_name: str
+    created_at: datetime
+    expires_at: datetime
+    transition_token: str
+
+
+class AgentCredentialTransitionCreateResponse(BaseModel):
+    data: AgentCredentialTransitionCreated
+    meta: dict[str, object] = Field(default_factory=dict)
+    error: None = None
+
+
+class AgentCredentialTransitionRedeemRequest(AgentEnrollRequest):
+    agent_secret_hash: str = Field(pattern=r"^[0-9a-f]{64}$")
+
+
+class AgentCredentialTransitionCredentials(BaseModel):
+    agent_id: str
+    site_id: UUID
+    site_name: str
+    agent_zone_id: UUID
+    agent_zone_name: str
+    display_name: str
+    ip_ranges: list[str] = Field(default_factory=list)
+
+
+class AgentCredentialTransitionResponse(BaseModel):
+    data: AgentCredentialTransitionCredentials
+    meta: dict[str, object] = Field(default_factory=dict)
+    error: None = None

backend/app/agent_enrollment/repository.py

@@ -0,0 +1,968 @@
+"""PostgreSQL persistence for secure Agent enrollment."""
+
+import hmac
+from collections.abc import Callable
+from uuid import UUID
+
+import psycopg
+from psycopg.errors import UniqueViolation
+from psycopg.rows import dict_row
+from psycopg.types.json import Jsonb
+
+from app.agent_enrollment.exceptions import (
+    AgentEnrollmentConflict,
+    AgentEnrollmentCredentialCollision,
+    AgentEnrollmentNotFound,
+    AgentEnrollmentTokenInvalid,
+)
+from app.config import settings
+
+
+ConnectionFactory = Callable[[], psycopg.Connection]
+
+TOKEN_HASH_CONSTRAINT = "uq_agent_enrollments_token_hash"
+OPEN_ZONE_CONSTRAINT = "uq_agent_enrollments_open_zone"
+OPEN_TARGET_CONSTRAINT = "uq_agent_enrollments_open_target_agent"
+AGENT_SECRET_HASH_CONSTRAINT = "uq_minerops_site_agents_agent_secret_hash"
+AGENT_ZONE_CONSTRAINT = "uq_minerops_site_agents_agent_zone_id"
+AGENT_ID_CONSTRAINT = "minerops_site_agents_pkey"
+
+
+def default_connection_factory() -> psycopg.Connection:
+    return psycopg.connect(
+        host=settings.postgres_host,
+        port=settings.postgres_port,
+        dbname=settings.postgres_db,
+        user=settings.postgres_user,
+        password=settings.postgres_password,
+        connect_timeout=5,
+    )
+
+
+class AgentEnrollmentRepository:
+    def __init__(self, connection_factory: ConnectionFactory | None = None):
+        self._connection_factory = connection_factory or default_connection_factory
+
+    def create_enrollment(
+        self,
+        *,
+        token_hash: str,
+        site_id: UUID,
+        agent_zone_id: UUID,
+        display_name: str,
+        actor_user_id: UUID,
+    ) -> dict:
+        connection = self._connection_factory()
+        try:
+            with connection.cursor(row_factory=dict_row) as cur:
+                cur.execute(
+                    """
+                    SELECT zone.id,
+                           zone.site_id,
+                           zone.name AS agent_zone_name,
+                           zone.is_enabled,
+                           site.name AS site_name,
+                           agent.agent_id AS assigned_agent_id
+                    FROM agent_zones AS zone
+                    JOIN sites AS site ON site.id = zone.site_id
+                    LEFT JOIN minerops_site_agents AS agent
+                      ON agent.agent_zone_id = zone.id
+                    WHERE zone.id = %s
+                      AND zone.site_id = %s
+                    FOR UPDATE OF zone
+                    """,
+                    (agent_zone_id, site_id),
+                )
+                zone = cur.fetchone()
+
+                if not zone:
+                    raise AgentEnrollmentNotFound(
+                        "Agent Zone was not found for the selected Site"
+                    )
+
+                if zone["is_enabled"] is not True:
+                    raise AgentEnrollmentConflict(
+                        "Agent Zone is disabled"
+                    )
+
+                if zone["assigned_agent_id"]:
+                    raise AgentEnrollmentConflict(
+                        "Agent Zone already has an assigned Agent"
+                    )
+
+                cur.execute(
+                    "SELECT clock_timestamp() AS operation_now"
+                )
+                operation_now = cur.fetchone()["operation_now"]
+
+                cur.execute(
+                    """
+                    UPDATE agent_enrollments
+                    SET revoked_at = %s
+                    WHERE agent_zone_id = %s
+                      AND used_at IS NULL
+                      AND revoked_at IS NULL
+                    RETURNING id
+                    """,
+                    (operation_now, agent_zone_id),
+                )
+                replaced_ids = [
+                    str(row["id"]) for row in cur.fetchall()
+                ]
+
+                cur.execute(
+                    """
+                    INSERT INTO agent_enrollments (
+                        token_hash,
+                        site_id,
+                        agent_zone_id,
+                        display_name,
+                        created_by_user_id,
+                        created_at,
+                        expires_at
+                    )
+                    VALUES (
+                        %s,
+                        %s,
+                        %s,
+                        %s,
+                        %s,
+                        %s,
+                        %s + interval '30 minutes'
+                    )
+                    RETURNING
+                        id,
+                        site_id,
+                        agent_zone_id,
+                        display_name,
+                        created_at,
+                        expires_at
+                    """,
+                    (
+                        token_hash,
+                        site_id,
+                        agent_zone_id,
+                        display_name,
+                        actor_user_id,
+                        operation_now,
+                        operation_now,
+                    ),
+                )
+                enrollment = dict(cur.fetchone())
+
+                enrollment["site_name"] = zone["site_name"]
+                enrollment["agent_zone_name"] = zone["agent_zone_name"]
+
+                cur.execute(
+                    """
+                    INSERT INTO audit_logs (
+                        actor_user_id,
+                        action,
+                        entity_type,
+                        entity_id,
+                        new_value_json,
+                        created_at
+                    )
+                    VALUES (
+                        %s,
+                        'agent.enrollment.created',
+                        'agent_enrollment',
+                        %s,
+                        %s,
+                        %s
+                    )
+                    """,
+                    (
+                        actor_user_id,
+                        enrollment["id"],
+                        Jsonb(
+                            {
+                                "site_id": str(site_id),
+                                "agent_zone_id": str(agent_zone_id),
+                                "display_name": display_name,
+                                "expires_at": enrollment[
+                                    "expires_at"
+                                ].isoformat(),
+                                "replaced_enrollment_ids": replaced_ids,
+                            }
+                        ),
+                        operation_now,
+                    ),
+                )
+
+            connection.commit()
+            return enrollment
+
+        except UniqueViolation as exc:
+            connection.rollback()
+            constraint = exc.diag.constraint_name
+
+            if constraint == TOKEN_HASH_CONSTRAINT:
+                raise AgentEnrollmentCredentialCollision(
+                    "Generated enrollment token collided"
+                ) from exc
+
+            if constraint == OPEN_ZONE_CONSTRAINT:
+                raise AgentEnrollmentConflict(
+                    "An active enrollment already exists for this Agent Zone"
+                ) from exc
+
+            raise
+
+        except Exception:
+            connection.rollback()
+            raise
+
+        finally:
+            connection.close()
+
+    def create_credential_transition(
+        self,
+        *,
+        token_hash: str,
+        target_agent_id: str,
+        actor_user_id: UUID,
+    ) -> dict:
+        connection = self._connection_factory()
+        try:
+            with connection.cursor(row_factory=dict_row) as cur:
+                cur.execute(
+                    """
+                    SELECT
+                        agent.agent_id,
+                        agent.site_id,
+                        agent.agent_zone_id,
+                        agent.display_name,
+                        agent.agent_secret_hash,
+                        agent.credential_created_at,
+                        agent.credential_revoked_at,
+                        agent.legacy_auth_disabled_at,
+                        site.name AS site_name,
+                        zone.name AS agent_zone_name,
+                        zone.is_enabled AS agent_zone_enabled,
+                        retirement.retired_at
+                    FROM minerops_site_agents AS agent
+                    JOIN sites AS site ON site.id = agent.site_id
+                    JOIN agent_zones AS zone
+                      ON zone.id = agent.agent_zone_id
+                     AND zone.site_id = agent.site_id
+                    LEFT JOIN agent_legacy_auth_retirements AS retirement
+                      ON retirement.agent_id = agent.agent_id
+                    WHERE agent.agent_id = %s
+                    FOR UPDATE OF agent, zone
+                    """,
+                    (target_agent_id,),
+                )
+                agent = cur.fetchone()
+
+                if not agent:
+                    raise AgentEnrollmentNotFound(
+                        "Existing Agent with durable Site and Zone routing was not found"
+                    )
+
+                if agent["agent_zone_enabled"] is not True:
+                    raise AgentEnrollmentConflict("Agent Zone is disabled")
+
+                if any(
+                    agent[field] is not None
+                    for field in (
+                        "agent_secret_hash",
+                        "credential_created_at",
+                        "credential_revoked_at",
+                        "legacy_auth_disabled_at",
+                        "retired_at",
+                    )
+                ):
+                    raise AgentEnrollmentConflict(
+                        "Existing Agent is not eligible for legacy credential transition"
+                    )
+
+                cur.execute("SELECT clock_timestamp() AS operation_now")
+                operation_now = cur.fetchone()["operation_now"]
+
+                cur.execute(
+                    """
+                    UPDATE agent_enrollments
+                    SET revoked_at = %s
+                    WHERE agent_zone_id = %s
+                      AND used_at IS NULL
+                      AND revoked_at IS NULL
+                    RETURNING id
+                    """,
+                    (operation_now, agent["agent_zone_id"]),
+                )
+                replaced_ids = [str(row["id"]) for row in cur.fetchall()]
+
+                display_name = (
+                    str(agent["display_name"] or agent["agent_id"]).strip()[:120]
+                )
+                cur.execute(
+                    """
+                    INSERT INTO agent_enrollments (
+                        token_hash,
+                        site_id,
+                        agent_zone_id,
+                        display_name,
+                        created_by_user_id,
+                        created_at,
+                        expires_at,
+                        target_agent_id
+                    )
+                    VALUES (%s, %s, %s, %s, %s, %s, %s + interval '30 minutes', %s)
+                    RETURNING
+                        id,
+                        site_id,
+                        agent_zone_id,
+                        display_name,
+                        created_at,
+                        expires_at,
+                        target_agent_id
+                    """,
+                    (
+                        token_hash,
+                        agent["site_id"],
+                        agent["agent_zone_id"],
+                        display_name,
+                        actor_user_id,
+                        operation_now,
+                        operation_now,
+                        agent["agent_id"],
+                    ),
+                )
+                transition = dict(cur.fetchone())
+                transition["site_name"] = agent["site_name"]
+                transition["agent_zone_name"] = agent["agent_zone_name"]
+
+                cur.execute(
+                    """
+                    INSERT INTO audit_logs (
+                        actor_user_id,
+                        action,
+                        entity_type,
+                        entity_id,
+                        new_value_json,
+                        created_at
+                    )
+                    VALUES (
+                        %s,
+                        'agent.credential_transition.created',
+                        'agent_enrollment',
+                        %s,
+                        %s,
+                        %s
+                    )
+                    """,
+                    (
+                        actor_user_id,
+                        transition["id"],
+                        Jsonb(
+                            {
+                                "target_agent_id": agent["agent_id"],
+                                "site_id": str(agent["site_id"]),
+                                "agent_zone_id": str(agent["agent_zone_id"]),
+                                "expires_at": transition["expires_at"].isoformat(),
+                                "replaced_enrollment_ids": replaced_ids,
+                            }
+                        ),
+                        operation_now,
+                    ),
+                )
+
+            connection.commit()
+            return transition
+
+        except UniqueViolation as exc:
+            connection.rollback()
+            constraint = exc.diag.constraint_name
+
+            if constraint == TOKEN_HASH_CONSTRAINT:
+                raise AgentEnrollmentCredentialCollision(
+                    "Generated transition token collided"
+                ) from exc
+
+            if constraint in {OPEN_ZONE_CONSTRAINT, OPEN_TARGET_CONSTRAINT}:
+                raise AgentEnrollmentConflict(
+                    "An active credential transition already exists for this Agent"
+                ) from exc
+
+            raise
+
+        except Exception:
+            connection.rollback()
+            raise
+
+        finally:
+            connection.close()
+
+    def list_enrollments(
+        self,
+        *,
+        site_id: UUID | None = None,
+        agent_zone_id: UUID | None = None,
+        limit: int = 100,
+    ) -> list[dict]:
+        connection = self._connection_factory()
+        try:
+            with connection.cursor(row_factory=dict_row) as cur:
+                cur.execute(
+                    """
+                    SELECT
+                        enrollment.id,
+                        enrollment.site_id,
+                        site.name AS site_name,
+                        enrollment.agent_zone_id,
+                        zone.name AS agent_zone_name,
+                        enrollment.display_name,
+                        enrollment.created_by_user_id,
+                        enrollment.created_at,
+                        enrollment.expires_at,
+                        enrollment.used_at,
+                        enrollment.revoked_at,
+                        enrollment.target_agent_id,
+                        enrollment.enrolled_agent_id,
+                        CASE
+                            WHEN enrollment.target_agent_id IS NULL
+                                THEN 'new_agent'
+                            ELSE 'existing_agent_credential_transition'
+                        END AS purpose,
+                        CASE
+                            WHEN enrollment.used_at IS NOT NULL
+                                THEN 'used'
+                            WHEN enrollment.revoked_at IS NOT NULL
+                                THEN 'revoked'
+                            WHEN enrollment.expires_at <= now()
+                                THEN 'expired'
+                            ELSE 'waiting'
+                        END AS status
+                    FROM agent_enrollments AS enrollment
+                    JOIN sites AS site
+                      ON site.id = enrollment.site_id
+                    JOIN agent_zones AS zone
+                      ON zone.id = enrollment.agent_zone_id
+                    WHERE (%s::uuid IS NULL OR enrollment.site_id = %s::uuid)
+                      AND (
+                          %s::uuid IS NULL
+                          OR enrollment.agent_zone_id = %s::uuid
+                      )
+                    ORDER BY enrollment.created_at DESC, enrollment.id DESC
+                    LIMIT %s
+                    """,
+                    (
+                        site_id,
+                        site_id,
+                        agent_zone_id,
+                        agent_zone_id,
+                        limit,
+                    ),
+                )
+                return [dict(row) for row in cur.fetchall()]
+        finally:
+            connection.close()
+
+    def redeem_enrollment(
+        self,
+        *,
+        token_hash: str,
+        agent_id: str,
+        agent_secret_hash: str,
+    ) -> dict:
+        connection = self._connection_factory()
+        try:
+            with connection.cursor(row_factory=dict_row) as cur:
+                cur.execute(
+                    """
+                    SELECT
+                        id,
+                        site_id,
+                        agent_zone_id,
+                        display_name,
+                        expires_at,
+                        used_at,
+                        revoked_at,
+                        target_agent_id
+                    FROM agent_enrollments
+                    WHERE token_hash = %s
+                    FOR UPDATE
+                    """,
+                    (token_hash,),
+                )
+                enrollment = cur.fetchone()
+
+                if not enrollment:
+                    raise AgentEnrollmentTokenInvalid(
+                        "Invalid or expired enrollment token"
+                    )
+
+                if (
+                    enrollment["used_at"] is not None
+                    or enrollment["revoked_at"] is not None
+                    or enrollment["target_agent_id"] is not None
+                ):
+                    raise AgentEnrollmentTokenInvalid(
+                        "Invalid or expired enrollment token"
+                    )
+
+                cur.execute(
+                    """
+                    SELECT
+                        zone.id,
+                        zone.site_id,
+                        zone.name AS agent_zone_name,
+                        zone.is_enabled,
+                        site.name AS site_name
+                    FROM agent_zones AS zone
+                    JOIN sites AS site ON site.id = zone.site_id
+                    WHERE zone.id = %s
+                      AND zone.site_id = %s
+                    FOR UPDATE OF zone
+                    """,
+                    (
+                        enrollment["agent_zone_id"],
+                        enrollment["site_id"],
+                    ),
+                )
+                zone = cur.fetchone()
+
+                if not zone:
+                    raise AgentEnrollmentConflict(
+                        "Enrollment Agent Zone no longer exists"
+                    )
+
+                if zone["is_enabled"] is not True:
+                    raise AgentEnrollmentConflict(
+                        "Agent Zone is disabled"
+                    )
+
+                cur.execute(
+                    """
+                    SELECT agent_id
+                    FROM minerops_site_agents
+                    WHERE agent_zone_id = %s
+                    FOR UPDATE
+                    """,
+                    (enrollment["agent_zone_id"],),
+                )
+                existing_agent = cur.fetchone()
+
+                if existing_agent:
+                    raise AgentEnrollmentConflict(
+                        "Agent Zone already has an assigned Agent"
+                    )
+
+                cur.execute(
+                    "SELECT clock_timestamp() AS operation_now"
+                )
+                operation_now = cur.fetchone()["operation_now"]
+
+                if enrollment["expires_at"] <= operation_now:
+                    raise AgentEnrollmentTokenInvalid(
+                        "Invalid or expired enrollment token"
+                    )
+
+                # Retire the identity before storing its credential. Both
+                # writes use this transaction, so a failed issuance cannot
+                # leave a new misleading tombstone. ON CONFLICT preserves an
+                # earlier retirement if this identity has credential history.
+                cur.execute(
+                    """
+                    INSERT INTO agent_legacy_auth_retirements (
+                        agent_id,
+                        retired_at
+                    )
+                    VALUES (%s, %s)
+                    ON CONFLICT (agent_id) DO NOTHING
+                    """,
+                    (agent_id, operation_now),
+                )
+
+                cur.execute(
+                    """
+                    INSERT INTO minerops_site_agents (
+                        agent_id,
+                        site_id,
+                        agent_zone_id,
+                        site_name,
+                        display_name,
+                        agent_secret_hash,
+                        credential_created_at,
+                        legacy_auth_disabled_at
+                    )
+                    VALUES (
+                        %s,
+                        %s,
+                        %s,
+                        %s,
+                        %s,
+                        %s,
+                        %s,
+                        %s
+                    )
+                    """,
+                    (
+                        agent_id,
+                        enrollment["site_id"],
+                        enrollment["agent_zone_id"],
+                        zone["site_name"],
+                        enrollment["display_name"],
+                        agent_secret_hash,
+                        operation_now,
+                        operation_now,
+                    ),
+                )
+
+                cur.execute(
+                    """
+                    UPDATE agent_enrollments
+                    SET used_at = %s,
+                        enrolled_agent_id = %s
+                    WHERE id = %s
+                    RETURNING used_at
+                    """,
+                    (operation_now, agent_id, enrollment["id"]),
+                )
+                used_at = cur.fetchone()["used_at"]
+
+                cur.execute(
+                    """
+                    SELECT network::text AS network
+                    FROM agent_zone_network_ranges
+                    WHERE agent_zone_id = %s
+                    ORDER BY network, id
+                    """,
+                    (enrollment["agent_zone_id"],),
+                )
+                networks = [
+                    row["network"] for row in cur.fetchall()
+                ]
+
+                cur.execute(
+                    """
+                    INSERT INTO audit_logs (
+                        actor_user_id,
+                        action,
+                        entity_type,
+                        entity_id,
+                        new_value_json,
+                        created_at
+                    )
+                    VALUES (
+                        NULL,
+                        'agent.enrollment.redeemed',
+                        'agent_enrollment',
+                        %s,
+                        %s,
+                        %s
+                    )
+                    """,
+                    (
+                        enrollment["id"],
+                        Jsonb(
+                            {
+                                "agent_id": agent_id,
+                                "site_id": str(enrollment["site_id"]),
+                                "agent_zone_id": str(
+                                    enrollment["agent_zone_id"]
+                                ),
+                                "display_name": enrollment[
+                                    "display_name"
+                                ],
+                                "used_at": used_at.isoformat(),
+                            }
+                        ),
+                        operation_now,
+                    ),
+                )
+
+                result = {
+                    "agent_id": agent_id,
+                    "site_id": enrollment["site_id"],
+                    "site_name": zone["site_name"],
+                    "agent_zone_id": enrollment["agent_zone_id"],
+                    "agent_zone_name": zone["agent_zone_name"],
+                    "display_name": enrollment["display_name"],
+                    "ip_ranges": networks,
+                }
+
+            connection.commit()
+            return result
+
+        except UniqueViolation as exc:
+            connection.rollback()
+            constraint = exc.diag.constraint_name
+
+            if constraint in {
+                AGENT_ID_CONSTRAINT,
+                AGENT_SECRET_HASH_CONSTRAINT,
+            }:
+                raise AgentEnrollmentCredentialCollision(
+                    "Generated Agent credential collided"
+                ) from exc
+
+            if constraint == AGENT_ZONE_CONSTRAINT:
+                raise AgentEnrollmentConflict(
+                    "Agent Zone already has an assigned Agent"
+                ) from exc
+
+            raise
+
+        except Exception:
+            connection.rollback()
+            raise
+
+        finally:
+            connection.close()
+
+    def redeem_credential_transition(
+        self,
+        *,
+        token_hash: str,
+        agent_secret_hash: str,
+    ) -> dict:
+        connection = self._connection_factory()
+        try:
+            with connection.cursor(row_factory=dict_row) as cur:
+                cur.execute(
+                    """
+                    SELECT
+                        id,
+                        site_id,
+                        agent_zone_id,
+                        display_name,
+                        expires_at,
+                        used_at,
+                        revoked_at,
+                        target_agent_id,
+                        enrolled_agent_id
+                    FROM agent_enrollments
+                    WHERE token_hash = %s
+                    FOR UPDATE
+                    """,
+                    (token_hash,),
+                )
+                enrollment = cur.fetchone()
+
+                if (
+                    not enrollment
+                    or enrollment["target_agent_id"] is None
+                    or enrollment["revoked_at"] is not None
+                ):
+                    raise AgentEnrollmentTokenInvalid(
+                        "Invalid or expired credential transition token"
+                    )
+
+                cur.execute(
+                    """
+                    SELECT
+                        agent.agent_id,
+                        agent.site_id,
+                        agent.agent_zone_id,
+                        agent.display_name,
+                        agent.agent_secret_hash,
+                        agent.credential_created_at,
+                        agent.credential_revoked_at,
+                        agent.legacy_auth_disabled_at,
+                        site.name AS site_name,
+                        zone.name AS agent_zone_name,
+                        zone.is_enabled AS agent_zone_enabled,
+                        retirement.retired_at
+                    FROM minerops_site_agents AS agent
+                    JOIN sites AS site ON site.id = agent.site_id
+                    JOIN agent_zones AS zone
+                      ON zone.id = agent.agent_zone_id
+                     AND zone.site_id = agent.site_id
+                    LEFT JOIN agent_legacy_auth_retirements AS retirement
+                      ON retirement.agent_id = agent.agent_id
+                    WHERE agent.agent_id = %s
+                    FOR UPDATE OF agent, zone
+                    """,
+                    (enrollment["target_agent_id"],),
+                )
+                agent = cur.fetchone()
+
+                if not agent:
+                    raise AgentEnrollmentConflict(
+                        "Credential transition target no longer exists with durable routing"
+                    )
+
+                if (
+                    agent["site_id"] != enrollment["site_id"]
+                    or agent["agent_zone_id"] != enrollment["agent_zone_id"]
+                ):
+                    raise AgentEnrollmentConflict(
+                        "Existing Agent routing changed after transition authorization"
+                    )
+
+                if agent["agent_zone_enabled"] is not True:
+                    raise AgentEnrollmentConflict("Agent Zone is disabled")
+
+                def transition_result() -> dict:
+                    cur.execute(
+                        """
+                        SELECT network::text AS network
+                        FROM agent_zone_network_ranges
+                        WHERE agent_zone_id = %s
+                        ORDER BY network, id
+                        """,
+                        (enrollment["agent_zone_id"],),
+                    )
+                    return {
+                        "agent_id": agent["agent_id"],
+                        "site_id": agent["site_id"],
+                        "site_name": agent["site_name"],
+                        "agent_zone_id": agent["agent_zone_id"],
+                        "agent_zone_name": agent["agent_zone_name"],
+                        "display_name": str(
+                            agent["display_name"] or enrollment["display_name"]
+                        ),
+                        "ip_ranges": [row["network"] for row in cur.fetchall()],
+                    }
+
+                # A retry after an ambiguous network response is successful only
+                # for the exact locally generated credential that won the first
+                # transaction. It never rotates or reveals a credential.
+                if enrollment["used_at"] is not None:
+                    stored_hash = str(agent["agent_secret_hash"] or "")
+                    if (
+                        enrollment["enrolled_agent_id"]
+                        == enrollment["target_agent_id"]
+                        and stored_hash
+                        and hmac.compare_digest(stored_hash, agent_secret_hash)
+                        and agent["credential_created_at"] is not None
+                        and agent["credential_revoked_at"] is None
+                        and agent["legacy_auth_disabled_at"] is not None
+                        and agent["retired_at"] is not None
+                    ):
+                        result = transition_result()
+                        connection.commit()
+                        return result
+
+                    raise AgentEnrollmentTokenInvalid(
+                        "Credential transition token has already been consumed"
+                    )
+
+                cur.execute("SELECT clock_timestamp() AS operation_now")
+                operation_now = cur.fetchone()["operation_now"]
+
+                if enrollment["expires_at"] <= operation_now:
+                    raise AgentEnrollmentTokenInvalid(
+                        "Invalid or expired credential transition token"
+                    )
+
+                if any(
+                    agent[field] is not None
+                    for field in (
+                        "agent_secret_hash",
+                        "credential_created_at",
+                        "credential_revoked_at",
+                        "legacy_auth_disabled_at",
+                        "retired_at",
+                    )
+                ):
+                    raise AgentEnrollmentConflict(
+                        "Existing Agent is no longer eligible for credential transition"
+                    )
+
+                # The durable retirement, Agent credential, enrollment terminal
+                # state, and audit record commit together. Any later failure
+                # rolls all of them back.
+                cur.execute(
+                    """
+                    INSERT INTO agent_legacy_auth_retirements (
+                        agent_id,
+                        retired_at
+                    )
+                    VALUES (%s, %s)
+                    """,
+                    (agent["agent_id"], operation_now),
+                )
+                cur.execute(
+                    """
+                    UPDATE minerops_site_agents
+                    SET agent_secret_hash = %s,
+                        credential_created_at = %s,
+                        legacy_auth_disabled_at = %s
+                    WHERE agent_id = %s
+                    RETURNING agent_id
+                    """,
+                    (
+                        agent_secret_hash,
+                        operation_now,
+                        operation_now,
+                        agent["agent_id"],
+                    ),
+                )
+                if not cur.fetchone():
+                    raise AgentEnrollmentConflict(
+                        "Credential transition target disappeared"
+                    )
+
+                cur.execute(
+                    """
+                    UPDATE agent_enrollments
+                    SET used_at = %s,
+                        enrolled_agent_id = target_agent_id
+                    WHERE id = %s
+                      AND used_at IS NULL
+                      AND revoked_at IS NULL
+                    RETURNING used_at, enrolled_agent_id
+                    """,
+                    (operation_now, enrollment["id"]),
+                )
+                completed = cur.fetchone()
+                if not completed:
+                    raise AgentEnrollmentConflict(
+                        "Credential transition state changed concurrently"
+                    )
+
+                cur.execute(
+                    """
+                    INSERT INTO audit_logs (
+                        actor_user_id,
+                        action,
+                        entity_type,
+                        entity_id,
+                        new_value_json,
+                        created_at
+                    )
+                    VALUES (
+                        NULL,
+                        'agent.credential_transition.redeemed',
+                        'agent_enrollment',
+                        %s,
+                        %s,
+                        %s
+                    )
+                    """,
+                    (
+                        enrollment["id"],
+                        Jsonb(
+                            {
+                                "agent_id": agent["agent_id"],
+                                "site_id": str(agent["site_id"]),
+                                "agent_zone_id": str(agent["agent_zone_id"]),
+                                "used_at": completed["used_at"].isoformat(),
+                            }
+                        ),
+                        operation_now,
+                    ),
+                )
+
+                result = transition_result()
+
+            connection.commit()
+            return result
+
+        except UniqueViolation as exc:
+            connection.rollback()
+            if exc.diag.constraint_name == AGENT_SECRET_HASH_CONSTRAINT:
+                raise AgentEnrollmentCredentialCollision(
+                    "Agent credential is already in use"
+                ) from exc
+            raise
+
+        except Exception:
+            connection.rollback()
+            raise
+
+        finally:
+            connection.close()

backend/app/agent_enrollment/router.py

@@ -0,0 +1,258 @@
+"""HTTP routes for Agent enrollment and bootstrap."""
+
+from typing import Annotated
+from uuid import UUID
+
+from fastapi import APIRouter, Depends, HTTPException, Query, Request, Response, status
+
+from app.agent_enrollment.dependencies import get_agent_enrollment_service
+from app.agent_enrollment.exceptions import (
+    AgentEnrollmentConflict,
+    AgentEnrollmentCredentialCollision,
+    AgentEnrollmentNotFound,
+    AgentEnrollmentTokenInvalid,
+)
+from app.agent_enrollment.models import (
+    AgentCredentialTransitionCreateRequest,
+    AgentCredentialTransitionCreateResponse,
+    AgentCredentialTransitionRedeemRequest,
+    AgentCredentialTransitionResponse,
+    AgentEnrollmentCreateRequest,
+    AgentEnrollmentCreateResponse,
+    AgentEnrollmentListResponse,
+    AgentEnrollRequest,
+    AgentEnrollResponse,
+    AgentWindowsPackageRequest,
+)
+from app.agent_enrollment.service import AgentEnrollmentService
+from app.agent_packages.windows import (
+    AgentWindowsPackageError,
+    AgentWindowsPackageSourceError,
+    build_windows_agent_package,
+    normalize_hub_url,
+)
+from app.identity import require_permission
+
+
+router = APIRouter(tags=["agent-enrollment"])
+
+EnrollmentService = Annotated[
+    AgentEnrollmentService,
+    Depends(get_agent_enrollment_service),
+]
+EnrollmentViewer = Annotated[
+    dict,
+    Depends(require_permission("agents.view")),
+]
+EnrollmentManager = Annotated[
+    dict,
+    Depends(require_permission("agents.manage")),
+]
+
+
+@router.post(
+    "/api/agent-enrollments",
+    response_model=AgentEnrollmentCreateResponse,
+    status_code=status.HTTP_201_CREATED,
+)
+def create_agent_enrollment(
+    request: AgentEnrollmentCreateRequest,
+    response: Response,
+    current_user: EnrollmentManager,
+    service: EnrollmentService,
+) -> AgentEnrollmentCreateResponse:
+    response.headers["Cache-Control"] = "no-store"
+
+    try:
+        enrollment = service.create_enrollment(
+            request,
+            actor_user_id=UUID(str(current_user["id"])),
+        )
+        return AgentEnrollmentCreateResponse(data=enrollment)
+    except AgentEnrollmentNotFound as exc:
+        raise HTTPException(status_code=404, detail=str(exc)) from exc
+    except AgentEnrollmentConflict as exc:
+        raise HTTPException(status_code=409, detail=str(exc)) from exc
+
+
+@router.post(
+    "/api/agent-credential-transitions",
+    response_model=AgentCredentialTransitionCreateResponse,
+    status_code=status.HTTP_201_CREATED,
+)
+def create_agent_credential_transition(
+    request: AgentCredentialTransitionCreateRequest,
+    response: Response,
+    current_user: EnrollmentManager,
+    service: EnrollmentService,
+) -> AgentCredentialTransitionCreateResponse:
+    response.headers["Cache-Control"] = "no-store"
+
+    try:
+        transition = service.create_credential_transition(
+            request,
+            actor_user_id=UUID(str(current_user["id"])),
+        )
+        return AgentCredentialTransitionCreateResponse(data=transition)
+    except AgentEnrollmentNotFound as exc:
+        raise HTTPException(status_code=404, detail=str(exc)) from exc
+    except AgentEnrollmentConflict as exc:
+        raise HTTPException(status_code=409, detail=str(exc)) from exc
+
+
+@router.get(
+    "/api/agent-enrollments",
+    response_model=AgentEnrollmentListResponse,
+)
+def list_agent_enrollments(
+    current_user: EnrollmentViewer,
+    service: EnrollmentService,
+    site_id: UUID | None = Query(default=None),
+    agent_zone_id: UUID | None = Query(default=None),
+    limit: int = Query(default=100, ge=1, le=500),
+) -> AgentEnrollmentListResponse:
+    del current_user
+
+    return AgentEnrollmentListResponse(
+        data=service.list_enrollments(
+            site_id=site_id,
+            agent_zone_id=agent_zone_id,
+            limit=limit,
+        )
+    )
+
+
+
+@router.post("/api/agent-enrollments/windows-package")
+def download_windows_agent_package(
+    package_request: AgentWindowsPackageRequest,
+    http_request: Request,
+    current_user: EnrollmentManager,
+) -> Response:
+    del current_user
+
+    browser_origin = http_request.headers.get("origin", "").strip()
+
+    try:
+        hub_url = normalize_hub_url(browser_origin)
+    except AgentWindowsPackageError as exc:
+        raise HTTPException(
+            status_code=400,
+            detail=(
+                "Windows Agent package downloads require "
+                "a valid browser Origin"
+            ),
+        ) from exc
+
+    try:
+        package = build_windows_agent_package(
+            enrollment_token=package_request.token,
+            hub_url=hub_url,
+            workflow="new_agent",
+        )
+    except AgentWindowsPackageSourceError as exc:
+        raise HTTPException(status_code=503, detail=str(exc)) from exc
+    except AgentWindowsPackageError as exc:
+        raise HTTPException(status_code=400, detail=str(exc)) from exc
+
+    return Response(
+        content=package,
+        media_type="application/zip",
+        headers={
+            "Cache-Control": "no-store",
+            "Pragma": "no-cache",
+            "Content-Disposition": (
+                'attachment; filename="MinerOpsAgent-Windows.zip"'
+            ),
+        },
+    )
+
+
+@router.post("/api/agent-credential-transitions/windows-package")
+def download_windows_agent_credential_transition_package(
+    package_request: AgentWindowsPackageRequest,
+    http_request: Request,
+    current_user: EnrollmentManager,
+) -> Response:
+    del current_user
+
+    browser_origin = http_request.headers.get("origin", "").strip()
+    try:
+        hub_url = normalize_hub_url(browser_origin)
+    except AgentWindowsPackageError as exc:
+        raise HTTPException(
+            status_code=400,
+            detail=(
+                "Windows Agent package downloads require "
+                "a valid browser Origin"
+            ),
+        ) from exc
+
+    try:
+        package = build_windows_agent_package(
+            enrollment_token=package_request.token,
+            hub_url=hub_url,
+            workflow="existing_agent_credential_transition",
+        )
+    except AgentWindowsPackageSourceError as exc:
+        raise HTTPException(status_code=503, detail=str(exc)) from exc
+    except AgentWindowsPackageError as exc:
+        raise HTTPException(status_code=400, detail=str(exc)) from exc
+
+    return Response(
+        content=package,
+        media_type="application/zip",
+        headers={
+            "Cache-Control": "no-store",
+            "Pragma": "no-cache",
+            "Content-Disposition": (
+                'attachment; filename="MinerOpsAgent-Credential-Upgrade-Windows.zip"'
+            ),
+        },
+    )
+
+@router.post(
+    "/api/agent/enroll",
+    response_model=AgentEnrollResponse,
+    status_code=status.HTTP_201_CREATED,
+)
+def enroll_agent(
+    request: AgentEnrollRequest,
+    response: Response,
+    service: EnrollmentService,
+) -> AgentEnrollResponse:
+    response.headers["Cache-Control"] = "no-store"
+
+    try:
+        return AgentEnrollResponse(data=service.redeem(request))
+    except AgentEnrollmentTokenInvalid as exc:
+        raise HTTPException(
+            status_code=401,
+            detail="Invalid or expired enrollment token",
+        ) from exc
+    except AgentEnrollmentConflict as exc:
+        raise HTTPException(status_code=409, detail=str(exc)) from exc
+
+
+@router.post(
+    "/api/agent/credential-transition",
+    response_model=AgentCredentialTransitionResponse,
+)
+def transition_agent_credential(
+    request: AgentCredentialTransitionRedeemRequest,
+    response: Response,
+    service: EnrollmentService,
+) -> AgentCredentialTransitionResponse:
+    response.headers["Cache-Control"] = "no-store"
+
+    try:
+        return AgentCredentialTransitionResponse(
+            data=service.redeem_credential_transition(request)
+        )
+    except AgentEnrollmentTokenInvalid as exc:
+        raise HTTPException(
+            status_code=401,
+            detail="Invalid or expired credential transition token",
+        ) from exc
+    except (AgentEnrollmentConflict, AgentEnrollmentCredentialCollision) as exc:
+        raise HTTPException(status_code=409, detail=str(exc)) from exc

backend/app/agent_enrollment/service.py

@@ -0,0 +1,134 @@
+"""Application service for secure one-time Agent enrollment."""
+
+import secrets
+from uuid import UUID, uuid4
+
+from app.agent_auth.service import hash_agent_secret
+from app.agent_enrollment.exceptions import (
+    AgentEnrollmentConflict,
+    AgentEnrollmentCredentialCollision,
+)
+from app.agent_enrollment.models import (
+    AgentCredentialTransitionCreateRequest,
+    AgentCredentialTransitionRedeemRequest,
+    AgentEnrollmentCreateRequest,
+    AgentEnrollRequest,
+)
+
+
+MAX_GENERATION_ATTEMPTS = 3
+
+
+def generate_enrollment_token() -> str:
+    return secrets.token_urlsafe(32)
+
+
+def generate_agent_secret() -> str:
+    return secrets.token_urlsafe(32)
+
+
+def generate_agent_id() -> str:
+    return f"agent-{uuid4().hex}"
+
+
+class AgentEnrollmentService:
+    def __init__(self, repository):
+        self.repository = repository
+
+    def create_enrollment(
+        self,
+        request: AgentEnrollmentCreateRequest,
+        *,
+        actor_user_id: UUID,
+    ) -> dict:
+        for _ in range(MAX_GENERATION_ATTEMPTS):
+            token = generate_enrollment_token()
+            try:
+                enrollment = self.repository.create_enrollment(
+                    token_hash=hash_agent_secret(token),
+                    site_id=request.site_id,
+                    agent_zone_id=request.agent_zone_id,
+                    display_name=request.display_name,
+                    actor_user_id=actor_user_id,
+                )
+                return {
+                    **enrollment,
+                    "enrollment_token": token,
+                }
+            except AgentEnrollmentCredentialCollision:
+                continue
+
+        raise AgentEnrollmentConflict(
+            "Unable to generate a unique enrollment token"
+        )
+
+    def list_enrollments(
+        self,
+        *,
+        site_id: UUID | None = None,
+        agent_zone_id: UUID | None = None,
+        limit: int = 100,
+    ) -> list[dict]:
+        return self.repository.list_enrollments(
+            site_id=site_id,
+            agent_zone_id=agent_zone_id,
+            limit=limit,
+        )
+
+    def create_credential_transition(
+        self,
+        request: AgentCredentialTransitionCreateRequest,
+        *,
+        actor_user_id: UUID,
+    ) -> dict:
+        for _ in range(MAX_GENERATION_ATTEMPTS):
+            token = generate_enrollment_token()
+            try:
+                transition = self.repository.create_credential_transition(
+                    token_hash=hash_agent_secret(token),
+                    target_agent_id=request.agent_id,
+                    actor_user_id=actor_user_id,
+                )
+                return {
+                    **transition,
+                    "transition_token": token,
+                }
+            except AgentEnrollmentCredentialCollision:
+                continue
+
+        raise AgentEnrollmentConflict(
+            "Unable to generate a unique credential transition token"
+        )
+
+    def redeem(self, request: AgentEnrollRequest) -> dict:
+        token_hash = hash_agent_secret(request.token)
+
+        for _ in range(MAX_GENERATION_ATTEMPTS):
+            agent_id = generate_agent_id()
+            agent_secret = generate_agent_secret()
+
+            try:
+                result = self.repository.redeem_enrollment(
+                    token_hash=token_hash,
+                    agent_id=agent_id,
+                    agent_secret_hash=hash_agent_secret(agent_secret),
+                )
+                return {
+                    **result,
+                    "agent_secret": agent_secret,
+                }
+            except AgentEnrollmentCredentialCollision:
+                continue
+
+        raise AgentEnrollmentConflict(
+            "Unable to generate unique Agent credentials"
+        )
+
+    def redeem_credential_transition(
+        self,
+        request: AgentCredentialTransitionRedeemRequest,
+    ) -> dict:
+        return self.repository.redeem_credential_transition(
+            token_hash=hash_agent_secret(request.token),
+            agent_secret_hash=request.agent_secret_hash,
+        )

backend/app/agent_packages/__init__.py

@@ -0,0 +1 @@
+"""Downloadable MinerOps Agent deployment packages."""

backend/app/agent_packages/windows.py

@@ -0,0 +1,181 @@
+"""Build short-lived Windows Agent enrollment packages in memory."""
+
+from __future__ import annotations
+
+import io
+import json
+import os
+import zipfile
+from pathlib import Path
+from urllib.parse import urlsplit
+
+
+WINDOWS_PACKAGE_ROOT = "MinerOpsAgent-Windows"
+
+WINDOWS_PACKAGE_FILES = (
+    "Enroll-MinerOpsAgent.ps1",
+    "Upgrade-MinerOpsAgentCredential.ps1",
+    "install.ps1",
+    "uninstall.ps1",
+    "MinerOpsAgentService.ps1",
+    "MinerOpsAgentTray.ps1",
+    "MinerOpsAgentGUI.ps1",
+    "MinerOpsApi3EnrichmentPoller.ps1",
+    "MinerOpsPoolPoller.ps1",
+    "MinerOpsPoolPollerTask.ps1",
+    "EnrichOneMiner.ps1",
+    "MinerOpsControl.ps1",
+    "VERSION",
+    "README.md",
+)
+
+DEFAULT_WINDOWS_AGENT_SOURCE = Path(
+    os.environ.get(
+        "MINEROPS_WINDOWS_AGENT_SOURCE",
+        "/app/agents/windows",
+    )
+)
+
+
+class AgentWindowsPackageError(RuntimeError):
+    """Base Windows package construction error."""
+
+
+class AgentWindowsPackageSourceError(AgentWindowsPackageError):
+    """Canonical Windows Agent source is unavailable or incomplete."""
+
+
+def normalize_hub_url(value: str) -> str:
+    candidate = value.strip()
+    parsed = urlsplit(candidate)
+
+    if parsed.scheme not in {"http", "https"}:
+        raise AgentWindowsPackageError(
+            "MinerOps Hub URL must use http or https"
+        )
+
+    if not parsed.netloc:
+        raise AgentWindowsPackageError(
+            "MinerOps Hub URL must include a host"
+        )
+
+    if parsed.username or parsed.password:
+        raise AgentWindowsPackageError(
+            "MinerOps Hub URL must not contain credentials"
+        )
+
+    if parsed.query or parsed.fragment:
+        raise AgentWindowsPackageError(
+            "MinerOps Hub URL must not contain query or fragment data"
+        )
+
+    if parsed.path not in {"", "/"}:
+        raise AgentWindowsPackageError(
+            "MinerOps Hub URL must be an origin without a path"
+        )
+
+    return f"{parsed.scheme}://{parsed.netloc}"
+
+
+def build_windows_agent_package(
+    *,
+    enrollment_token: str,
+    hub_url: str,
+    workflow: str = "new_agent",
+    source_root: Path | None = None,
+) -> bytes:
+    token = enrollment_token.strip()
+
+    if not 32 <= len(token) <= 256:
+        raise AgentWindowsPackageError(
+            "Enrollment token has an invalid length"
+        )
+
+    normalized_hub_url = normalize_hub_url(hub_url)
+
+    if workflow not in {
+        "new_agent",
+        "existing_agent_credential_transition",
+    }:
+        raise AgentWindowsPackageError("Unsupported Windows Agent workflow")
+
+    root = (
+        Path(source_root)
+        if source_root is not None
+        else DEFAULT_WINDOWS_AGENT_SOURCE
+    )
+
+    if not root.is_dir():
+        raise AgentWindowsPackageSourceError(
+            "Canonical Windows Agent source is unavailable"
+        )
+
+    missing = [
+        name
+        for name in WINDOWS_PACKAGE_FILES
+        if not (root / name).is_file()
+    ]
+
+    if missing:
+        raise AgentWindowsPackageSourceError(
+            "Canonical Windows Agent source is incomplete: "
+            + ", ".join(missing)
+        )
+
+    enrollment = {
+        "hub_url": normalized_hub_url,
+        "token": token,
+        "workflow": workflow,
+    }
+
+    if workflow == "new_agent":
+        command = ".\\Enroll-MinerOpsAgent.ps1"
+        description = "enrollment"
+    else:
+        command = ".\\Upgrade-MinerOpsAgentCredential.ps1"
+        description = "existing-Agent credential transition"
+
+    instructions = f"""MinerOps Windows Agent
+
+1. Extract this ZIP on the target Windows machine.
+2. Open Windows PowerShell as Administrator.
+3. Change to the extracted MinerOpsAgent-Windows folder.
+4. Run:
+
+   {command}
+
+This package is for the {description} workflow. The credential is short-lived
+and single-use. Do not use the other bootstrap script with this package.
+Do not post enrollment.json in chat, tickets, screenshots, or logs.
+Delete the ZIP and extracted setup folder after successful installation.
+"""
+
+    buffer = io.BytesIO()
+
+    with zipfile.ZipFile(
+        buffer,
+        mode="w",
+        compression=zipfile.ZIP_DEFLATED,
+    ) as archive:
+        for name in WINDOWS_PACKAGE_FILES:
+            archive.write(
+                root / name,
+                arcname=f"{WINDOWS_PACKAGE_ROOT}/{name}",
+            )
+
+        archive.writestr(
+            f"{WINDOWS_PACKAGE_ROOT}/enrollment.json",
+            json.dumps(
+                enrollment,
+                indent=2,
+                sort_keys=True,
+            )
+            + "\n",
+        )
+
+        archive.writestr(
+            f"{WINDOWS_PACKAGE_ROOT}/INSTALL.txt",
+            instructions,
+        )
+
+    return buffer.getvalue()

backend/app/agent_registry/__init__.py

@@ -0,0 +1 @@
+"""Read-only Agent registry projection."""

backend/app/agent_registry/dependencies.py

@@ -0,0 +1,8 @@
+"""Dependencies for the Agent registry read model."""
+
+from app.agent_registry.repository import AgentRegistryRepository
+from app.agent_registry.service import AgentRegistryService
+
+
+def get_agent_registry_service() -> AgentRegistryService:
+    return AgentRegistryService(AgentRegistryRepository())

backend/app/agent_registry/models.py

@@ -0,0 +1,62 @@
+"""Typed read models for Agent Management."""
+
+from datetime import datetime
+from typing import Literal
+from uuid import UUID
+
+from pydantic import BaseModel, Field
+
+
+CredentialState = Literal["legacy", "active", "revoked", "retired"]
+RoutingState = Literal["assigned", "unassigned", "disabled"]
+
+
+class AgentRegistrySite(BaseModel):
+    id: UUID
+    name: str
+
+
+class AgentRegistryZone(BaseModel):
+    id: UUID
+    site_id: UUID
+    site_name: str
+    name: str
+    description: str | None = None
+    is_enabled: bool
+    assigned_agent_id: str | None = None
+    networks: list[str] = Field(default_factory=list)
+
+
+class AgentRegistryAgent(BaseModel):
+    agent_id: str
+    display_name: str | None = None
+
+    site_id: UUID | None = None
+    site_name: str
+
+    agent_zone_id: UUID | None = None
+    agent_zone_name: str | None = None
+    agent_zone_enabled: bool | None = None
+
+    hostname: str | None = None
+    version: str | None = None
+    ip_address: str | None = None
+    last_checkin_at: datetime
+
+    credential_state: CredentialState
+    credential_created_at: datetime | None = None
+    credential_revoked_at: datetime | None = None
+
+    routing_state: RoutingState
+
+
+class AgentRegistryData(BaseModel):
+    agents: list[AgentRegistryAgent] = Field(default_factory=list)
+    sites: list[AgentRegistrySite] = Field(default_factory=list)
+    zones: list[AgentRegistryZone] = Field(default_factory=list)
+
+
+class AgentRegistryResponse(BaseModel):
+    data: AgentRegistryData
+    meta: dict[str, object] = Field(default_factory=dict)
+    error: None = None

backend/app/agent_registry/repository.py

@@ -0,0 +1,131 @@
+"""PostgreSQL reads for the durable Agent registry."""
+
+import psycopg
+from psycopg.rows import dict_row
+
+from app.config import settings
+
+
+def default_connection_factory():
+    return psycopg.connect(
+        host=settings.postgres_host,
+        port=settings.postgres_port,
+        dbname=settings.postgres_db,
+        user=settings.postgres_user,
+        password=settings.postgres_password,
+        row_factory=dict_row,
+    )
+
+
+class AgentRegistryRepository:
+    def __init__(self, connection_factory=default_connection_factory):
+        self.connection_factory = connection_factory
+
+    def list_registry(self) -> dict[str, list[dict]]:
+        connection = self.connection_factory()
+
+        try:
+            with connection.cursor() as cur:
+                cur.execute(
+                    """
+                    SELECT
+                        site.id,
+                        site.name
+                    FROM sites AS site
+                    WHERE EXISTS (
+                        SELECT 1
+                        FROM agent_zones AS zone
+                        WHERE zone.site_id = site.id
+                    )
+                    ORDER BY lower(site.name), site.id
+                    """
+                )
+                sites = cur.fetchall()
+
+                cur.execute(
+                    """
+                    SELECT
+                        zone.id,
+                        zone.site_id,
+                        site.name AS site_name,
+                        zone.name,
+                        zone.description,
+                        zone.is_enabled,
+                        assigned.agent_id AS assigned_agent_id,
+                        COALESCE(
+                            array_agg(
+                                network.network::text
+                                ORDER BY network.network::text
+                            ) FILTER (WHERE network.id IS NOT NULL),
+                            ARRAY[]::text[]
+                        ) AS networks
+                    FROM agent_zones AS zone
+                    JOIN sites AS site
+                      ON site.id = zone.site_id
+                    LEFT JOIN minerops_site_agents AS assigned
+                      ON assigned.agent_zone_id = zone.id
+                    LEFT JOIN agent_zone_network_ranges AS network
+                      ON network.agent_zone_id = zone.id
+                    GROUP BY
+                        zone.id,
+                        zone.site_id,
+                        site.name,
+                        zone.name,
+                        zone.description,
+                        zone.is_enabled,
+                        assigned.agent_id
+                    ORDER BY
+                        lower(site.name),
+                        lower(zone.name),
+                        zone.id
+                    """
+                )
+                zones = cur.fetchall()
+
+                cur.execute(
+                    """
+                    SELECT
+                        agent.agent_id,
+                        agent.display_name,
+                        agent.site_id,
+                        COALESCE(site.name, agent.site_name) AS site_name,
+                        agent.agent_zone_id,
+                        zone.name AS agent_zone_name,
+                        zone.is_enabled AS agent_zone_enabled,
+                        agent.hostname,
+                        agent.version,
+                        agent.ip_address,
+                        agent.last_checkin_at,
+                        agent.credential_created_at,
+                        agent.credential_revoked_at,
+                        CASE
+                            WHEN agent.credential_revoked_at IS NOT NULL
+                                THEN 'revoked'
+                            WHEN agent.agent_secret_hash IS NOT NULL
+                                THEN 'active'
+                            WHEN retirement.retired_at IS NOT NULL
+                                THEN 'retired'
+                            ELSE 'legacy'
+                        END AS credential_state
+                    FROM minerops_site_agents AS agent
+                    LEFT JOIN agent_legacy_auth_retirements AS retirement
+                      ON retirement.agent_id = agent.agent_id
+                    LEFT JOIN sites AS site
+                      ON site.id = agent.site_id
+                    LEFT JOIN agent_zones AS zone
+                      ON zone.id = agent.agent_zone_id
+                    ORDER BY
+                        lower(COALESCE(site.name, agent.site_name)),
+                        lower(COALESCE(agent.display_name, agent.agent_id)),
+                        agent.agent_id
+                    """
+                )
+                agents = cur.fetchall()
+
+            return {
+                "sites": sites,
+                "zones": zones,
+                "agents": agents,
+            }
+        finally:
+            connection.close()

backend/app/agent_registry/router.py

@@ -0,0 +1,48 @@
+"""Read-only Agent Management API."""
+
+from typing import Annotated
+
+from fastapi import APIRouter, Depends, Response
+
+from app.agent_registry.dependencies import get_agent_registry_service
+from app.agent_registry.models import AgentRegistryResponse
+from app.agent_registry.service import AgentRegistryService
+from app.identity import require_permission
+
+
+router = APIRouter(tags=["agents"])
+
+RegistryService = Annotated[
+    AgentRegistryService,
+    Depends(get_agent_registry_service),
+]
+
+AgentViewer = Annotated[
+    dict,
+    Depends(require_permission("agents.view")),
+]
+
+
+@router.get(
+    "/api/agents",
+    response_model=AgentRegistryResponse,
+)
+def list_agents(
+    response: Response,
+    current_user: AgentViewer,
+    service: RegistryService,
+) -> AgentRegistryResponse:
+    del current_user
+
+    response.headers["Cache-Control"] = "no-store"
+
+    data = service.list_registry()
+
+    return AgentRegistryResponse(
+        data=data,
+        meta={
+            "agent_count": len(data.agents),
+            "site_count": len(data.sites),
+            "zone_count": len(data.zones),
+        },
+    )

backend/app/agent_registry/service.py

@@ -0,0 +1,52 @@
+"""Application service for the Agent Management read model."""
+
+from app.agent_registry.models import (
+    AgentRegistryAgent,
+    AgentRegistryData,
+    AgentRegistrySite,
+    AgentRegistryZone,
+)
+
+
+class AgentRegistryService:
+    def __init__(self, repository):
+        self.repository = repository
+
+    def list_registry(self) -> AgentRegistryData:
+        rows = self.repository.list_registry()
+
+        sites = [
+            AgentRegistrySite(**row)
+            for row in rows["sites"]
+        ]
+
+        zones = [
+            AgentRegistryZone(**row)
+            for row in rows["zones"]
+        ]
+
+        agents: list[AgentRegistryAgent] = []
+
+        for row in rows["agents"]:
+            zone_id = row.get("agent_zone_id")
+            zone_enabled = row.get("agent_zone_enabled")
+
+            if zone_id is None:
+                routing_state = "unassigned"
+            elif zone_enabled is False:
+                routing_state = "disabled"
+            else:
+                routing_state = "assigned"
+
+            agents.append(
+                AgentRegistryAgent(
+                    **row,
+                    routing_state=routing_state,
+                )
+            )
+
+        return AgentRegistryData(
+            agents=agents,
+            sites=sites,
+            zones=zones,
+        )

backend/app/agent_zones/__init__.py

@@ -0,0 +1 @@
+"""Agent Zone routing domain."""

backend/app/agent_zones/dependencies.py

@@ -0,0 +1,8 @@
+"""Agent Zone dependency wiring."""
+
+from app.agent_zones.repository import AgentZoneRepository
+from app.agent_zones.service import AgentZoneService
+
+
+def get_agent_zone_service() -> AgentZoneService:
+    return AgentZoneService(AgentZoneRepository())

backend/app/agent_zones/exceptions.py

@@ -0,0 +1,17 @@
+"""Agent Zone domain exceptions."""
+
+
+class AgentZoneError(Exception):
+    """Base Agent Zone error."""
+
+
+class AgentZoneNotFound(AgentZoneError):
+    """A Site or Agent Zone does not exist."""
+
+
+class AgentZoneValidationError(AgentZoneError):
+    """Agent Zone input or assignment is invalid."""
+
+
+class AgentZoneConflict(AgentZoneError):
+    """An Agent Zone uniqueness or assignment invariant conflicts."""

backend/app/agent_zones/models.py

@@ -0,0 +1,114 @@
+"""Typed Agent Zone and check-in contracts."""
+
+from ipaddress import ip_network
+from typing import Any
+from uuid import UUID
+
+from pydantic import BaseModel, ConfigDict, Field, field_validator, model_validator
+
+
+class AgentZoneCreateRequest(BaseModel):
+    model_config = ConfigDict(extra="forbid")
+
+    site_id: UUID
+    name: str = Field(min_length=1, max_length=120)
+    description: str | None = Field(default=None, max_length=1000)
+    networks: list[str] = Field(default_factory=list, max_length=64)
+
+    @field_validator("name")
+    @classmethod
+    def normalize_name(cls, value: str) -> str:
+        normalized = value.strip()
+        if not normalized:
+            raise ValueError("name cannot be blank")
+        return normalized
+
+    @field_validator("description")
+    @classmethod
+    def normalize_description(cls, value: str | None) -> str | None:
+        if value is None:
+            return None
+        return value.strip() or None
+
+    @field_validator("networks")
+    @classmethod
+    def normalize_networks(cls, values: list[str]) -> list[str]:
+        normalized: list[str] = []
+        for value in values:
+            try:
+                network = str(ip_network(value.strip(), strict=True))
+            except ValueError as exc:
+                raise ValueError(f"invalid CIDR network: {value}") from exc
+            if network in normalized:
+                raise ValueError(f"duplicate CIDR network: {network}")
+            normalized.append(network)
+        return normalized
+
+
+class AgentZoneNetwork(BaseModel):
+    id: UUID
+    network: str
+
+
+class AgentZoneSummary(BaseModel):
+    id: UUID
+    site_id: UUID
+    name: str
+    description: str | None = None
+    is_enabled: bool
+    assigned_agent_id: str | None = None
+    networks: list[AgentZoneNetwork] = Field(default_factory=list)
+
+
+class AgentZoneListResponse(BaseModel):
+    data: list[AgentZoneSummary]
+    meta: dict[str, object] = Field(default_factory=dict)
+    error: None = None
+
+
+class AgentZoneCreateResponse(BaseModel):
+    data: AgentZoneSummary
+    meta: dict[str, object] = Field(default_factory=dict)
+    error: None = None
+
+
+class AgentCheckinRequest(BaseModel):
+    model_config = ConfigDict(extra="allow")
+
+    agent_id: str | None = Field(default=None, max_length=255)
+    site_id: UUID | None = None
+    agent_zone_id: UUID | None = None
+    site_name: str | None = Field(default=None, max_length=255)
+    hostname: str | None = Field(default=None, max_length=255)
+    version: str | None = Field(default=None, max_length=120)
+    ip_address: str | None = Field(default=None, max_length=255)
+
+    @model_validator(mode="after")
+    def require_site_for_explicit_zone(self) -> "AgentCheckinRequest":
+        if self.agent_zone_id is not None and self.site_id is None:
+            raise ValueError("site_id is required when agent_zone_id is supplied")
+        return self
+
+
+class AgentCheckinResponse(BaseModel):
+    ok: bool = True
+    hub_mode: bool = True
+    agent_id: str
+    site_id: UUID | None = None
+    agent_zone_id: UUID | None = None
+    routing_available: bool
+    routing_reason: str | None = None
+    site_name: str
+    message: str = "Agent check-in received."
+
+
+class AgentZoneRoutingContext(BaseModel):
+    site_id: UUID | None = None
+    agent_zone_id: UUID | None = None
+    routing_reason: str | None = None
+
+
+class MinerZoneAssociationResult(BaseModel):
+    agent_zone_id: UUID | None = None
+    routing_reason: str | None = None
+    outcomes: dict[UUID, str] = Field(default_factory=dict)

backend/app/agent_zones/repository.py

@@ -0,0 +1,344 @@
+"""PostgreSQL persistence for Agent Zones and ownership assignments."""
+
+from collections.abc import Callable, Iterable
+from typing import Any
+from uuid import UUID
+
+import psycopg
+from psycopg.errors import ForeignKeyViolation, UniqueViolation
+from psycopg.rows import dict_row
+from psycopg.types.json import Jsonb
+
+from app.agent_zones.exceptions import (
+    AgentZoneConflict,
+    AgentZoneNotFound,
+)
+from app.config import settings
+
+
+ConnectionFactory = Callable[[], psycopg.Connection]
+
+
+def default_connection_factory() -> psycopg.Connection:
+    return psycopg.connect(
+        host=settings.postgres_host,
+        port=settings.postgres_port,
+        dbname=settings.postgres_db,
+        user=settings.postgres_user,
+        password=settings.postgres_password,
+        connect_timeout=5,
+    )
+
+
+class AgentZoneRepository:
+    def __init__(self, connection_factory: ConnectionFactory | None = None):
+        self._connection_factory = connection_factory or default_connection_factory
+
+    def get_agent(self, agent_id: str) -> dict | None:
+        connection = self._connection_factory()
+        try:
+            with connection.cursor(row_factory=dict_row) as cur:
+                cur.execute(
+                    """
+                    SELECT agent_id, site_id, agent_zone_id, site_name, hostname,
+                           version, ip_address, last_checkin_at, last_payload
+                    FROM minerops_site_agents
+                    WHERE agent_id = %s
+                    """,
+                    (agent_id,),
+                )
+                row = cur.fetchone()
+                return dict(row) if row else None
+        finally:
+            connection.close()
+
+    def get_zone(self, zone_id: UUID) -> dict | None:
+        connection = self._connection_factory()
+        try:
+            with connection.cursor(row_factory=dict_row) as cur:
+                cur.execute(
+                    """
+                    SELECT id, site_id, name, description, is_enabled,
+                           created_at, updated_at
+                    FROM agent_zones
+                    WHERE id = %s
+                    """,
+                    (zone_id,),
+                )
+                row = cur.fetchone()
+                return dict(row) if row else None
+        finally:
+            connection.close()
+
+    def list_usable_zones(self, site_id: UUID) -> list[dict]:
+        connection = self._connection_factory()
+        try:
+            with connection.cursor(row_factory=dict_row) as cur:
+                cur.execute(
+                    """
+                    SELECT id, site_id, name, description, is_enabled
+                    FROM agent_zones
+                    WHERE site_id = %s AND is_enabled
+                    ORDER BY lower(name), id
+                    """,
+                    (site_id,),
+                )
+                return [dict(row) for row in cur.fetchall()]
+        finally:
+            connection.close()
+
+    def list_zones(self, site_id: UUID | None = None) -> list[dict]:
+        connection = self._connection_factory()
+        try:
+            with connection.cursor(row_factory=dict_row) as cur:
+                cur.execute(
+                    """
+                    SELECT zone.id, zone.site_id, zone.name, zone.description,
+                           zone.is_enabled, agent.agent_id AS assigned_agent_id,
+                           range.id AS range_id, range.network::text AS network
+                    FROM agent_zones AS zone
+                    LEFT JOIN minerops_site_agents AS agent
+                      ON agent.agent_zone_id = zone.id
+                    LEFT JOIN agent_zone_network_ranges AS range
+                      ON range.agent_zone_id = zone.id
+                    WHERE (%s::uuid IS NULL OR zone.site_id = %s::uuid)
+                    ORDER BY lower(zone.name), zone.id, range.network, range.id
+                    """,
+                    (site_id, site_id),
+                )
+                rows = cur.fetchall()
+        finally:
+            connection.close()
+
+        zones: dict[UUID, dict] = {}
+        for row in rows:
+            zone = zones.setdefault(
+                row["id"],
+                {
+                    "id": row["id"],
+                    "site_id": row["site_id"],
+                    "name": row["name"],
+                    "description": row["description"],
+                    "is_enabled": row["is_enabled"],
+                    "assigned_agent_id": row["assigned_agent_id"],
+                    "networks": [],
+                },
+            )
+            if row["range_id"] is not None:
+                zone["networks"].append(
+                    {"id": row["range_id"], "network": row["network"]}
+                )
+        return list(zones.values())
+
+    def create_zone(
+        self,
+        *,
+        site_id: UUID,
+        name: str,
+        description: str | None,
+        networks: list[str],
+    ) -> UUID:
+        connection = self._connection_factory()
+        try:
+            with connection.cursor(row_factory=dict_row) as cur:
+                cur.execute(
+                    """
+                    INSERT INTO agent_zones (site_id, name, description)
+                    VALUES (%s, %s, %s)
+                    RETURNING id
+                    """,
+                    (site_id, name, description),
+                )
+                zone_id = cur.fetchone()["id"]
+                for network in networks:
+                    cur.execute(
+                        """
+                        INSERT INTO agent_zone_network_ranges (agent_zone_id, network)
+                        VALUES (%s, %s::cidr)
+                        """,
+                        (zone_id, network),
+                    )
+            connection.commit()
+            return zone_id
+        except ForeignKeyViolation as exc:
+            connection.rollback()
+            raise AgentZoneNotFound("Site not found") from exc
+        except UniqueViolation as exc:
+            connection.rollback()
+            raise AgentZoneConflict(
+                "An enabled Agent Zone with this name already exists at the Site"
+            ) from exc
+        except Exception:
+            connection.rollback()
+            raise
+        finally:
+            connection.close()
+
+    def save_checkin(
+        self,
+        *,
+        agent_id: str,
+        site_id: UUID | None,
+        agent_zone_id: UUID | None,
+        site_name: str,
+        hostname: str | None,
+        version: str | None,
+        ip_address: str | None,
+        payload: dict[str, Any],
+    ) -> None:
+        connection = self._connection_factory()
+        try:
+            with connection.cursor() as cur:
+                cur.execute(
+                    """
+                    INSERT INTO minerops_site_agents (
+                        agent_id, site_id, agent_zone_id, site_name, hostname,
+                        version, ip_address, last_checkin_at, last_payload
+                    ) VALUES (%s, %s, %s, %s, %s, %s, %s, now(), %s)
+                    ON CONFLICT (agent_id) DO UPDATE SET
+                        site_id = EXCLUDED.site_id,
+                        agent_zone_id = EXCLUDED.agent_zone_id,
+                        site_name = EXCLUDED.site_name,
+                        hostname = EXCLUDED.hostname,
+                        version = EXCLUDED.version,
+                        ip_address = EXCLUDED.ip_address,
+                        last_checkin_at = now(),
+                        last_payload = EXCLUDED.last_payload
+                    """,
+                    (
+                        agent_id,
+                        site_id,
+                        agent_zone_id,
+                        site_name,
+                        hostname,
+                        version,
+                        ip_address,
+                        Jsonb(payload),
+                    ),
+                )
+            connection.commit()
+        except UniqueViolation as exc:
+            connection.rollback()
+            raise AgentZoneConflict(
+                "The Agent Zone already has an assigned Agent"
+            ) from exc
+        except (ForeignKeyViolation, psycopg.errors.CheckViolation) as exc:
+            connection.rollback()
+            raise AgentZoneConflict("Agent Zone and Site assignment conflict") from exc
+        except Exception:
+            connection.rollback()
+            raise
+        finally:
+            connection.close()
+
+    def get_agent_assignment(self, agent_id: str) -> dict | None:
+        connection = self._connection_factory()
+        try:
+            with connection.cursor(row_factory=dict_row) as cur:
+                cur.execute(
+                    """
+                    SELECT agent.agent_id, agent.site_id, agent.agent_zone_id,
+                           zone.is_enabled AS zone_enabled
+                    FROM minerops_site_agents AS agent
+                    LEFT JOIN agent_zones AS zone ON zone.id = agent.agent_zone_id
+                    WHERE agent.agent_id = %s
+                    """,
+                    (agent_id,),
+                )
+                row = cur.fetchone()
+                return dict(row) if row else None
+        finally:
+            connection.close()
+
+    def get_agent_configuration(self, agent_id: str) -> dict | None:
+        connection = self._connection_factory()
+        try:
+            with connection.cursor(row_factory=dict_row) as cur:
+                cur.execute(
+                    """
+                    SELECT
+                        agent.agent_id,
+                        agent.site_id,
+                        agent.agent_zone_id,
+                        coalesce(site.name, agent.site_name) AS site_name,
+                        zone.name AS agent_zone_name,
+                        zone.is_enabled AS agent_zone_enabled,
+                        coalesce(
+                            array_agg(
+                                network.network::text
+                                ORDER BY network.network::text, network.id
+                            ) FILTER (WHERE network.id IS NOT NULL),
+                            ARRAY[]::text[]
+                        ) AS networks
+                    FROM minerops_site_agents AS agent
+                    LEFT JOIN sites AS site
+                      ON site.id = agent.site_id
+                    LEFT JOIN agent_zones AS zone
+                      ON zone.id = agent.agent_zone_id
+                    LEFT JOIN agent_zone_network_ranges AS network
+                      ON network.agent_zone_id = zone.id
+                    WHERE agent.agent_id = %s
+                    GROUP BY
+                        agent.agent_id,
+                        agent.site_id,
+                        agent.agent_zone_id,
+                        site.name,
+                        agent.site_name,
+                        zone.name,
+                        zone.is_enabled
+                    """,
+                    (agent_id,),
+                )
+                row = cur.fetchone()
+                return dict(row) if row else None
+        finally:
+            connection.close()
+
+    def assign_miners_to_zone(
+        self, miner_ids: Iterable[UUID], agent_zone_id: UUID
+    ) -> dict[UUID, str]:
+        unique_ids = list(dict.fromkeys(miner_ids))
+        if not unique_ids:
+            return {}
+        connection = self._connection_factory()
+        outcomes: dict[UUID, str] = {}
+        try:
+            with connection.cursor(row_factory=dict_row) as cur:
+                cur.execute(
+                    "SELECT id, site_id FROM agent_zones WHERE id = %s",
+                    (agent_zone_id,),
+                )
+                zone = cur.fetchone()
+                if not zone:
+                    raise AgentZoneNotFound("Agent Zone not found")
+                for miner_id in unique_ids:
+                    cur.execute(
+                        "SELECT id, site_id, agent_zone_id FROM miners WHERE id = %s FOR UPDATE",
+                        (miner_id,),
+                    )
+                    miner = cur.fetchone()
+                    if not miner:
+                        outcomes[miner_id] = "miner_not_found"
+                    elif miner["agent_zone_id"] == agent_zone_id:
+                        outcomes[miner_id] = "preserved"
+                    elif miner["agent_zone_id"] is not None:
+                        outcomes[miner_id] = "agent_zone_conflict"
+                    elif miner["site_id"] not in {None, zone["site_id"]}:
+                        outcomes[miner_id] = "site_conflict"
+                    else:
+                        cur.execute(
+                            """
+                            UPDATE miners
+                            SET site_id = %s, agent_zone_id = %s, updated_at = now()
+                            WHERE id = %s AND agent_zone_id IS NULL
+                            """,
+                            (zone["site_id"], agent_zone_id, miner_id),
+                        )
+                        outcomes[miner_id] = "assigned"
+            connection.commit()
+            return outcomes
+        except Exception:
+            connection.rollback()
+            raise
+        finally:
+            connection.close()

backend/app/agent_zones/router.py

@@ -0,0 +1,75 @@
+"""HTTP mapping for Agent Zones and Agent check-in."""
+
+from typing import Annotated
+from uuid import UUID
+
+from fastapi import APIRouter, Depends, HTTPException, Query, status
+
+from app.agent_commands.dependencies import require_agent_identity
+from app.agent_zones.dependencies import get_agent_zone_service
+from app.agent_zones.exceptions import (
+    AgentZoneConflict,
+    AgentZoneNotFound,
+    AgentZoneValidationError,
+)
+from app.agent_zones.models import (
+    AgentCheckinRequest,
+    AgentCheckinResponse,
+    AgentZoneCreateRequest,
+    AgentZoneCreateResponse,
+    AgentZoneListResponse,
+)
+from app.agent_zones.service import AgentZoneService
+from app.identity import require_permission
+
+
+router = APIRouter(tags=["agent-zones"])
+ZoneService = Annotated[AgentZoneService, Depends(get_agent_zone_service)]
+AgentIdentity = Annotated[str, Depends(require_agent_identity)]
+ZoneViewer = Annotated[dict, Depends(require_permission("agents.view"))]
+ZoneManager = Annotated[dict, Depends(require_permission("agents.manage"))]
+
+
+@router.get("/api/agent-zones", response_model=AgentZoneListResponse)
+def list_agent_zones(
+    current_user: ZoneViewer,
+    service: ZoneService,
+    site_id: UUID | None = Query(default=None),
+) -> AgentZoneListResponse:
+    del current_user
+    return AgentZoneListResponse(data=service.list_zones(site_id))
+
+
+@router.post(
+    "/api/agent-zones",
+    response_model=AgentZoneCreateResponse,
+    status_code=status.HTTP_201_CREATED,
+)
+def create_agent_zone(
+    request: AgentZoneCreateRequest,
+    current_user: ZoneManager,
+    service: ZoneService,
+) -> AgentZoneCreateResponse:
+    del current_user
+    try:
+        return AgentZoneCreateResponse(data=service.create_zone(request))
+    except AgentZoneNotFound as exc:
+        raise HTTPException(status_code=404, detail=str(exc)) from exc
+    except AgentZoneConflict as exc:
+        raise HTTPException(status_code=409, detail=str(exc)) from exc
+
+
+@router.post("/api/agent/checkin", response_model=AgentCheckinResponse)
+def agent_checkin(
+    request: AgentCheckinRequest,
+    agent_id: AgentIdentity,
+    service: ZoneService,
+) -> AgentCheckinResponse:
+    try:
+        return service.checkin(agent_id, request)
+    except AgentZoneNotFound as exc:
+        raise HTTPException(status_code=404, detail=str(exc)) from exc
+    except AgentZoneConflict as exc:
+        raise HTTPException(status_code=409, detail=str(exc)) from exc
+    except AgentZoneValidationError as exc:
+        raise HTTPException(status_code=422, detail=str(exc)) from exc

backend/app/agent_zones/service.py

@@ -0,0 +1,216 @@
+"""Business rules for Agent Zone routing and transitional check-in."""
+
+from typing import Any
+from uuid import UUID
+
+from app.agent_zones.exceptions import (
+    AgentZoneNotFound,
+    AgentZoneValidationError,
+)
+from app.agent_zones.models import (
+    AgentCheckinRequest,
+    AgentCheckinResponse,
+    AgentZoneRoutingContext,
+    AgentZoneCreateRequest,
+    AgentZoneSummary,
+    MinerZoneAssociationResult,
+)
+from app.agent_zones.repository import AgentZoneRepository
+
+
+SENSITIVE_KEYS = {
+    "agent_secret",
+    "api3_account",
+    "api3_password",
+    "password",
+    "salt",
+    "token",
+}
+
+
+def _sanitize(value: Any) -> Any:
+    if isinstance(value, dict):
+        return {
+            key: _sanitize(item)
+            for key, item in value.items()
+            if key.lower() not in SENSITIVE_KEYS
+            and not any(
+                marker in key.lower()
+                for marker in ("secret", "password", "token", "salt")
+            )
+        }
+    if isinstance(value, list):
+        return [_sanitize(item) for item in value]
+    return value
+
+
+class AgentZoneService:
+    @staticmethod
+    def validate_agent_identity(
+        authenticated_agent_id: str, claimed_agent_id: str | None
+    ) -> None:
+        if claimed_agent_id and claimed_agent_id.strip() != authenticated_agent_id:
+            raise AgentZoneValidationError(
+                "Payload agent_id does not match authenticated Agent identity"
+            )
+
+    def __init__(self, repository: AgentZoneRepository):
+        self.repository = repository
+
+    def list_zones(self, site_id: UUID | None = None) -> list[AgentZoneSummary]:
+        return [
+            AgentZoneSummary.model_validate(row)
+            for row in self.repository.list_zones(site_id)
+        ]
+
+    def create_zone(self, request: AgentZoneCreateRequest) -> AgentZoneSummary:
+        zone_id = self.repository.create_zone(
+            site_id=request.site_id,
+            name=request.name,
+            description=request.description,
+            networks=request.networks,
+        )
+        for zone in self.list_zones(request.site_id):
+            if zone.id == zone_id:
+                return zone
+        raise AgentZoneNotFound("Created Agent Zone was not found")
+
+    def checkin(
+        self, authenticated_agent_id: str, request: AgentCheckinRequest
+    ) -> AgentCheckinResponse:
+        self.validate_agent_identity(authenticated_agent_id, request.agent_id)
+
+        existing = self.repository.get_agent(authenticated_agent_id)
+        requested_site = request.site_id
+        requested_zone = request.agent_zone_id
+        final_site = requested_site or (existing or {}).get("site_id")
+        final_zone: UUID | None = None
+        reason: str | None = None
+
+        established_zone = None
+        established_zone_id = (existing or {}).get("agent_zone_id")
+        if established_zone_id is not None:
+            established_zone = self.repository.get_zone(established_zone_id)
+            if not established_zone:
+                raise AgentZoneValidationError(
+                    "Existing Agent Zone assignment is invalid"
+                )
+            if (
+                requested_site is not None
+                and established_zone["site_id"] != requested_site
+            ):
+                raise AgentZoneValidationError(
+                    "Agent cannot change Sites while assigned to an Agent Zone"
+                )
+
+        if requested_zone is not None:
+            zone = self.repository.get_zone(requested_zone)
+            if not zone:
+                raise AgentZoneNotFound("Agent Zone not found")
+            if zone["site_id"] != requested_site:
+                raise AgentZoneValidationError(
+                    "Agent Zone does not belong to the supplied Site"
+                )
+            if not zone["is_enabled"]:
+                raise AgentZoneValidationError("Agent Zone is disabled")
+            if established_zone_id is not None and established_zone_id != requested_zone:
+                raise AgentZoneValidationError(
+                    "Agent is already assigned to a different Agent Zone"
+                )
+            final_zone = requested_zone
+        elif established_zone is not None:
+            final_site = established_zone["site_id"]
+            final_zone = established_zone["id"]
+            if not established_zone["is_enabled"]:
+                reason = "agent_zone_disabled"
+        elif final_site is not None:
+            usable = self.repository.list_usable_zones(final_site)
+            if len(usable) == 1:
+                final_zone = usable[0]["id"]
+            elif not usable:
+                reason = "agent_zone_unavailable"
+            else:
+                reason = "agent_zone_ambiguous"
+        else:
+            reason = "site_unassigned"
+
+        site_name = (request.site_name or "").strip()
+        if not site_name:
+            site_name = str((existing or {}).get("site_name") or "Unassigned")
+        payload = _sanitize(request.model_dump(mode="json"))
+        self.repository.save_checkin(
+            agent_id=authenticated_agent_id,
+            site_id=final_site,
+            agent_zone_id=final_zone,
+            site_name=site_name,
+            hostname=(request.hostname or "").strip() or None,
+            version=(request.version or "").strip() or None,
+            ip_address=(request.ip_address or "").strip() or None,
+            payload=payload,
+        )
+        routing_available = final_zone is not None and reason is None
+        return AgentCheckinResponse(
+            agent_id=authenticated_agent_id,
+            site_id=final_site,
+            agent_zone_id=final_zone,
+            routing_available=routing_available,
+            routing_reason=reason,
+            site_name=site_name,
+        )
+
+    def routing_context(
+        self, agent_id: str, recorded_zone_id: UUID | None = None
+    ) -> AgentZoneRoutingContext:
+        assignment = self.repository.get_agent_assignment(agent_id)
+        if not assignment or assignment.get("agent_zone_id") is None:
+            return AgentZoneRoutingContext(routing_reason="agent_zone_unassigned")
+        zone_id = assignment["agent_zone_id"]
+        if recorded_zone_id is not None and recorded_zone_id != zone_id:
+            return AgentZoneRoutingContext(routing_reason="agent_zone_conflict")
+        if assignment.get("zone_enabled") is not True:
+            return AgentZoneRoutingContext(
+                site_id=assignment.get("site_id"),
+                agent_zone_id=zone_id,
+                routing_reason="agent_zone_disabled",
+            )
+        return AgentZoneRoutingContext(
+            site_id=assignment.get("site_id"), agent_zone_id=zone_id
+        )
+
+    def configuration(self, agent_id: str) -> dict[str, Any] | None:
+        row = self.repository.get_agent_configuration(agent_id)
+        if not row:
+            return None
+        return {
+            "agent_id": row["agent_id"],
+            "site_id": row["site_id"],
+            "site_name": row["site_name"],
+            "agent_zone_id": row["agent_zone_id"],
+            "agent_zone_name": row["agent_zone_name"],
+            "ip_ranges": [
+                {
+                    "name": row["agent_zone_name"],
+                    "cidr": network,
+                    "enabled": row["agent_zone_enabled"] is True,
+                    "api_port": 4028,
+                    "api3_port": 4433,
+                }
+                for network in row.get("networks") or []
+            ],
+        }
+
+    def associate_miners_from_agent(
+        self, agent_id: str, miner_ids: list[UUID]
+    ) -> MinerZoneAssociationResult:
+        routing = self.routing_context(agent_id)
+        if routing.routing_reason:
+            return MinerZoneAssociationResult(
+                agent_zone_id=routing.agent_zone_id,
+                routing_reason=routing.routing_reason,
+            )
+        return MinerZoneAssociationResult(
+            agent_zone_id=routing.agent_zone_id,
+            outcomes=self.repository.assign_miners_to_zone(
+                miner_ids, routing.agent_zone_id
+            ),
+        )

backend/app/config.py

@@ -16,6 +16,9 @@ class Settings(BaseSettings):
 
     redis_url: str = "redis://redis:6379/0"
 
+    minerops_agent_id: str = "plexus-windows-agent"
+    minerops_agent_shared_secret: str = ""
+
     jwt_secret_key: str
     jwt_access_token_minutes: int = 30
     jwt_refresh_token_days: int = 14

backend/app/frontend/agent_management_view.py

@@ -0,0 +1,277 @@
+"""Semantic HTML for the Internal Alpha Agent Management page."""
+
+
+def agent_management_content(can_manage_agents: bool) -> str:
+    management = """
+    <section class="panel agent-enrollment-panel"
+        aria-labelledby="agentEnrollmentCreateTitle">
+        <div class="panel-head">
+            <div>
+                <p class="eyebrow">Agent deployment</p>
+                <h2 id="agentEnrollmentCreateTitle">Add Agent</h2>
+                <p class="panel-copy">
+                    Create a short-lived one-time enrollment for an Agent Zone.
+                    Windows is the currently supported deployment platform.
+                </p>
+            </div>
+        </div>
+
+        <form id="agentCreateForm" class="agent-create-form">
+            <div class="field">
+                <label for="agentSite">Site</label>
+                <select id="agentSite" required>
+                    <option value="">Choose a site</option>
+                </select>
+            </div>
+
+            <div class="field">
+                <label for="agentZone">Agent Zone</label>
+                <select id="agentZone" required disabled>
+                    <option value="">Choose a site first</option>
+                </select>
+            </div>
+
+            <div class="field">
+                <label for="agentDisplayName">Agent name</label>
+                <input id="agentDisplayName"
+                    type="text"
+                    maxlength="120"
+                    autocomplete="off"
+                    placeholder="Example: Plexus Unit 4 Agent"
+                    required>
+            </div>
+
+            <div class="field">
+                <label for="agentPlatform">Platform</label>
+                <select id="agentPlatform">
+                    <option value="windows">Windows</option>
+                    <option value="linux-x64" disabled>Linux x64 — coming later</option>
+                    <option value="linux-arm64" disabled>Linux ARM64 / Raspberry Pi — coming later</option>
+                </select>
+            </div>
+
+            <div class="agent-form-actions">
+                <button id="agentCreateSubmit"
+                    class="command-button"
+                    type="submit">
+                    Create Windows enrollment
+                </button>
+            </div>
+
+            <p id="agentCreateStatus"
+                class="freshness"
+                aria-live="polite"></p>
+        </form>
+
+        <section id="agentEnrollmentResult"
+            class="agent-enrollment-result"
+            aria-labelledby="agentEnrollmentResultTitle"
+            hidden>
+            <div>
+                <p class="eyebrow">One-time credential</p>
+                <h3 id="agentEnrollmentResultTitle">
+                    Enrollment created
+                </h3>
+            </div>
+
+            <p id="agentEnrollmentResultCopy">
+                This token is displayed only for this enrollment step.
+                Keep it private. MinerOps does not store the plaintext token.
+            </p>
+
+            <div class="agent-token-box">
+                <code id="agentEnrollmentToken"></code>
+            </div>
+
+            <p id="agentEnrollmentExpires" class="freshness"></p>
+
+            <div class="agent-form-actions">
+                <button id="agentEnrollmentDownload"
+                    class="command-button"
+                    type="button">
+                    Download Windows package
+                </button>
+                <button id="agentEnrollmentCopy"
+                    class="quiet-button"
+                    type="button">
+                    Copy token
+                </button>
+                <button id="agentEnrollmentDismiss"
+                    class="quiet-button"
+                    type="button">
+                    Clear token from screen
+                </button>
+            </div>
+
+            <p id="agentEnrollmentCopyStatus"
+                class="freshness"
+                aria-live="polite"></p>
+
+            <p class="panel-copy">
+                The Windows package contains the short-lived enrollment
+                credential and generic MinerOps Agent runtime. Transfer it
+                only to the intended Agent computer and delete the ZIP after
+                successful installation.
+            </p>
+        </section>
+    </section>
+    """ if can_manage_agents else """
+    <section class="panel">
+        <div class="panel-head">
+            <div>
+                <p class="eyebrow">Agent deployment</p>
+                <h2>Agent enrollment</h2>
+            </div>
+        </div>
+        <p class="permission-note">
+            Your account can view Agent status but cannot create Agent
+            enrollments.
+        </p>
+    </section>
+    """
+
+    return f"""
+<div id="agentManagementLoading" class="state-message" role="status">
+    <strong>Loading Agents</strong>
+    <span>Requesting Agent registry and enrollment information.</span>
+</div>
+
+<div id="agentManagementError"
+    class="state-message"
+    data-kind="error"
+    role="alert"
+    hidden>
+    <strong>Agent Management unavailable</strong>
+    <span id="agentManagementErrorText">
+        Agent information could not be loaded.
+    </span>
+    <button id="agentManagementRetry"
+        class="command-button"
+        type="button">
+        Retry
+    </button>
+</div>
+
+<div id="agentManagementContent"
+    data-can-manage-agents="{str(can_manage_agents).lower()}"
+    hidden>
+    <section class="agent-summary-grid" aria-label="Agent Management summary">
+        <div class="panel agent-summary-card">
+            <span>Registered Agents</span>
+            <strong id="agentCount">-</strong>
+        </div>
+        <div class="panel agent-summary-card">
+            <span>Agent Zones</span>
+            <strong id="agentZoneCount">-</strong>
+        </div>
+        <div class="panel agent-summary-card">
+            <span>Waiting enrollments</span>
+            <strong id="agentWaitingEnrollmentCount">-</strong>
+        </div>
+    </section>
+
+    <div class="agent-management-columns">
+        <section class="panel" aria-labelledby="registeredAgentsTitle">
+            <div class="panel-head">
+                <div>
+                    <p class="eyebrow">Durable identities</p>
+                    <h2 id="registeredAgentsTitle">Agents</h2>
+                    <p class="panel-copy">
+                        Registered Agent identities and their latest factual
+                        check-in information.
+                    </p>
+                </div>
+                <button id="agentManagementRefresh"
+                    class="quiet-button"
+                    type="button">
+                    Refresh
+                </button>
+            </div>
+
+            <div class="table-wrap">
+                <table class="agent-table">
+                    <thead>
+                        <tr>
+                            <th>Agent</th>
+                            <th>Site / Zone</th>
+                            <th>Host</th>
+                            <th>Version</th>
+                            <th>Last check-in</th>
+                            <th>Credential</th>
+                            <th>Routing</th>
+                            <th>Action</th>
+                        </tr>
+                    </thead>
+                    <tbody id="agentRows"></tbody>
+                </table>
+            </div>
+            <p id="agentEmpty" class="panel-copy" hidden>
+                No registered Agents.
+            </p>
+        </section>
+
+        <section class="panel" aria-labelledby="agentZonesTitle">
+            <div class="panel-head">
+                <div>
+                    <p class="eyebrow">Network routing boundaries</p>
+                    <h2 id="agentZonesTitle">Agent Zones</h2>
+                </div>
+            </div>
+
+            <div class="table-wrap">
+                <table class="agent-zone-table">
+                    <thead>
+                        <tr>
+                            <th>Site</th>
+                            <th>Zone</th>
+                            <th>Networks</th>
+                            <th>Assigned Agent</th>
+                            <th>State</th>
+                        </tr>
+                    </thead>
+                    <tbody id="agentZoneRows"></tbody>
+                </table>
+            </div>
+            <p id="agentZoneEmpty" class="panel-copy" hidden>
+                No Agent Zones.
+            </p>
+        </section>
+    </div>
+
+    {management}
+
+    <section class="panel" aria-labelledby="agentEnrollmentHistoryTitle">
+        <div class="panel-head">
+            <div>
+                <p class="eyebrow">Bootstrap history</p>
+                <h2 id="agentEnrollmentHistoryTitle">Enrollment history</h2>
+                <p class="panel-copy">
+                    Metadata only. Plaintext enrollment tokens are never
+                    returned by this history view.
+                </p>
+            </div>
+        </div>
+
+        <div class="table-wrap">
+            <table class="agent-enrollment-table">
+                <thead>
+                    <tr>
+                        <th>Agent name</th>
+                        <th>Site / Zone</th>
+                        <th>Status</th>
+                        <th>Created</th>
+                        <th>Expires</th>
+                        <th>Enrolled Agent</th>
+                    </tr>
+                </thead>
+                <tbody id="agentEnrollmentRows"></tbody>
+            </table>
+        </div>
+        <p id="agentEnrollmentEmpty" class="panel-copy" hidden>
+            No Agent enrollment records.
+        </p>
+    </section>
+</div>
+
+<script src="/assets/minerops-agent-management.js" defer></script>
+"""

backend/app/frontend/miner_detail_view.py

@@ -48,6 +48,38 @@ def miner_detail_content() -> str:
             <dl class="metric-grid" id="minerTelemetryDetails"></dl>
         </section>
     </div>
+    <section class="panel miner-controls" id="minerControlsSection"
+        aria-labelledby="minerControlsTitle">
+        <div class="panel-head"><div><p class="eyebrow">Agent-routed actions</p>
+            <h2 id="minerControlsTitle">Controls</h2></div>
+            <button class="quiet-button" id="minerControlsRefresh" type="button">Refresh controls</button>
+        </div>
+        <p class="panel-copy" id="minerControlsSummary" aria-live="polite">
+            Loading factual capability and recent operations.
+        </p>
+        <div id="minerControlCapabilities" class="control-capability-grid"></div>
+        <div id="minerControlActions" class="miner-control-actions" hidden>
+            <button class="command-button" id="minerServiceControl" type="button" hidden></button>
+            <form id="minerPerformanceControl" class="performance-control" hidden>
+                <label for="minerPerformanceMode">Performance mode</label>
+                <select id="minerPerformanceMode">
+                    <option value="low">Low</option>
+                    <option value="normal">Normal</option>
+                    <option value="high">High</option>
+                </select>
+                <button class="command-button" type="submit">Set mode</button>
+            </form>
+        </div>
+        <p id="minerControlPermission" class="permission-note" hidden>
+            Your account can inspect control capability and history but cannot queue controls.
+        </p>
+        <div id="minerControlResult" class="status-callout" role="status" hidden></div>
+        <div class="table-wrap compact-history-table">
+            <table><thead><tr><th>Action</th><th>Requested</th><th>Status</th>
+                <th>Verification</th><th>Created</th></tr></thead>
+                <tbody id="minerControlHistory"></tbody></table>
+        </div>
+    </section>
     <section class="panel" id="minerLocationSection" aria-labelledby="minerLocationTitle">
         <div class="panel-head"><div><p class="eyebrow">Physical context</p>
             <h2 id="minerLocationTitle">Location</h2></div></div>

backend/app/frontend/router.py

@@ -18,6 +18,7 @@ DashboardUser = Annotated[dict, Depends(require_permission("dashboard.view"))]
 MapUser = Annotated[dict, Depends(require_permission("locations.view"))]
 RepairUser = Annotated[dict, Depends(require_permission("repairs.view"))]
 MinerUser = Annotated[dict, Depends(require_permission("miners.view"))]
+AgentUser = Annotated[dict, Depends(require_permission("agents.view"))]
 
 
 def render_page(view: str, current_user: dict, **context) -> str:
@@ -92,6 +93,27 @@ def miner_detail_script() -> Response:
         headers={"Cache-Control": "no-store"},
     )
 
+@router.get(
+    "/assets/minerops-agent-management.js",
+    include_in_schema=False,
+)
+def agent_management_script() -> Response:
+    return Response(
+        (STATIC_ROOT / "agent-management.js").read_text(encoding="utf-8"),
+        media_type="text/javascript",
+        headers={"Cache-Control": "no-store"},
+    )
+
+
+@router.get(
+    "/agent/management",
+    response_class=HTMLResponse,
+    include_in_schema=False,
+)
+def agent_management_page(current_user: AgentUser) -> str:
+    return render_page("agent_management", current_user)
+
+
 @router.get("/dashboard", response_class=HTMLResponse, include_in_schema=False)
 def dashboard_page(current_user: DashboardUser) -> str:
     return render_page("dashboard", current_user)

backend/app/frontend/static/agent-management.js

@@ -0,0 +1,567 @@
+(function () {
+    "use strict";
+
+    if (document.body.dataset.view !== "agent_management") return;
+
+    const ids = [
+        "agentManagementLoading",
+        "agentManagementError",
+        "agentManagementErrorText",
+        "agentManagementRetry",
+        "agentManagementContent",
+        "agentManagementRefresh",
+        "agentCount",
+        "agentZoneCount",
+        "agentWaitingEnrollmentCount",
+        "agentRows",
+        "agentEmpty",
+        "agentZoneRows",
+        "agentZoneEmpty",
+        "agentEnrollmentRows",
+        "agentEnrollmentEmpty",
+        "agentCreateForm",
+        "agentSite",
+        "agentZone",
+        "agentDisplayName",
+        "agentPlatform",
+        "agentCreateSubmit",
+        "agentCreateStatus",
+        "agentEnrollmentResult",
+        "agentEnrollmentResultTitle",
+        "agentEnrollmentResultCopy",
+        "agentEnrollmentToken",
+        "agentEnrollmentExpires",
+        "agentEnrollmentDownload",
+        "agentEnrollmentCopy",
+        "agentEnrollmentDismiss",
+        "agentEnrollmentCopyStatus"
+    ];
+
+    const el = {};
+
+    ids.forEach(function (id) {
+        el[id] = document.getElementById(id);
+    });
+
+    let registry = {
+        agents: [],
+        sites: [],
+        zones: []
+    };
+
+    let enrollments = [];
+    let packageEndpoint = "/api/agent-enrollments/windows-package";
+    let packageFilename = "MinerOpsAgent-Windows.zip";
+
+    function text(value, fallback) {
+        if (value === null || value === undefined || value === "") {
+            return fallback || "Unavailable";
+        }
+        return String(value);
+    }
+
+    function dateTime(value) {
+        if (!value) return "Never";
+        const parsed = new Date(value);
+        if (Number.isNaN(parsed.valueOf())) return "Unavailable";
+        return parsed.toLocaleString();
+    }
+
+    function words(value) {
+        return text(value, "Unknown")
+            .replaceAll("_", " ")
+            .replace(/\b\w/g, function (letter) {
+                return letter.toUpperCase();
+            });
+    }
+
+    function cell(value, className) {
+        const node = document.createElement("td");
+        if (className) node.className = className;
+        node.textContent = value;
+        return node;
+    }
+
+    function setState(name) {
+        el.agentManagementLoading.hidden = name !== "loading";
+        el.agentManagementError.hidden = name !== "error";
+        el.agentManagementContent.hidden = name !== "ready";
+    }
+
+    async function api(path, options) {
+        const response = await fetch(path, Object.assign({
+            credentials: "same-origin",
+            cache: "no-store",
+            headers: {
+                "Accept": "application/json"
+            }
+        }, options || {}));
+
+        const payload = await response.json().catch(function () {
+            return {};
+        });
+
+        if (!response.ok) {
+            const detail = payload && payload.detail
+                ? String(payload.detail)
+                : "Request failed with status " + response.status + ".";
+            throw new Error(detail);
+        }
+
+        return payload;
+    }
+
+    function renderAgents() {
+        el.agentRows.replaceChildren();
+
+        registry.agents.forEach(function (agent) {
+            const row = document.createElement("tr");
+
+            const identity = document.createElement("td");
+            const name = document.createElement("strong");
+            const id = document.createElement("span");
+
+            name.textContent = text(agent.display_name, "Unnamed Agent");
+            id.className = "secondary";
+            id.textContent = agent.agent_id;
+
+            identity.append(name, id);
+
+            const location = [
+                text(agent.site_name, "Unknown site"),
+                text(agent.agent_zone_name, "No Agent Zone")
+            ].join(" / ");
+
+            const host = [
+                text(agent.hostname, "Unknown host"),
+                text(agent.ip_address, "No IP")
+            ].join(" / ");
+
+            row.append(
+                identity,
+                cell(location),
+                cell(host),
+                cell(text(agent.version, "Unknown")),
+                cell(dateTime(agent.last_checkin_at)),
+                cell(words(agent.credential_state)),
+                cell(words(agent.routing_state))
+            );
+
+            const action = document.createElement("td");
+            const canManage =
+                el.agentManagementContent.dataset.canManageAgents === "true";
+            if (
+                canManage &&
+                agent.credential_state === "legacy" &&
+                agent.routing_state === "assigned"
+            ) {
+                const button = document.createElement("button");
+                button.type = "button";
+                button.className = "quiet-button";
+                button.textContent = "Upgrade credential";
+                button.addEventListener("click", function () {
+                    createCredentialTransition(agent);
+                });
+                action.appendChild(button);
+            } else {
+                action.textContent = "—";
+            }
+            row.appendChild(action);
+
+            el.agentRows.appendChild(row);
+        });
+
+        el.agentEmpty.hidden = registry.agents.length !== 0;
+    }
+
+    function renderZones() {
+        el.agentZoneRows.replaceChildren();
+
+        registry.zones.forEach(function (zone) {
+            const row = document.createElement("tr");
+
+            const networks = Array.isArray(zone.networks) && zone.networks.length
+                ? zone.networks.join(", ")
+                : "No networks recorded";
+
+            row.append(
+                cell(zone.site_name),
+                cell(zone.name),
+                cell(networks),
+                cell(text(zone.assigned_agent_id, "Unassigned")),
+                cell(zone.is_enabled ? "Enabled" : "Disabled")
+            );
+
+            el.agentZoneRows.appendChild(row);
+        });
+
+        el.agentZoneEmpty.hidden = registry.zones.length !== 0;
+    }
+
+    function renderEnrollments() {
+        el.agentEnrollmentRows.replaceChildren();
+
+        enrollments.forEach(function (enrollment) {
+            const row = document.createElement("tr");
+
+            row.append(
+                cell(enrollment.display_name),
+                cell(
+                    enrollment.site_name + " / " +
+                    enrollment.agent_zone_name
+                ),
+                cell(words(enrollment.status)),
+                cell(dateTime(enrollment.created_at)),
+                cell(dateTime(enrollment.expires_at)),
+                cell(text(
+                    enrollment.enrolled_agent_id || enrollment.target_agent_id,
+                    "Not enrolled"
+                ))
+            );
+
+            el.agentEnrollmentRows.appendChild(row);
+        });
+
+        el.agentEnrollmentEmpty.hidden = enrollments.length !== 0;
+    }
+
+    function populateSites() {
+        if (!el.agentSite) return;
+
+        const selected = el.agentSite.value;
+
+        el.agentSite.replaceChildren();
+
+        const placeholder = document.createElement("option");
+        placeholder.value = "";
+        placeholder.textContent = "Choose a site";
+        el.agentSite.appendChild(placeholder);
+
+        registry.sites.forEach(function (site) {
+            const option = document.createElement("option");
+            option.value = site.id;
+            option.textContent = site.name;
+            el.agentSite.appendChild(option);
+        });
+
+        if ([...el.agentSite.options].some(function (option) {
+            return option.value === selected;
+        })) {
+            el.agentSite.value = selected;
+        }
+
+        populateZones();
+    }
+
+    function populateZones() {
+        if (!el.agentZone || !el.agentSite) return;
+
+        const siteId = el.agentSite.value;
+        const selected = el.agentZone.value;
+
+        el.agentZone.replaceChildren();
+
+        const placeholder = document.createElement("option");
+        placeholder.value = "";
+
+        if (!siteId) {
+            placeholder.textContent = "Choose a site first";
+            el.agentZone.disabled = true;
+            el.agentZone.appendChild(placeholder);
+            return;
+        }
+
+        placeholder.textContent = "Choose an Agent Zone";
+        el.agentZone.appendChild(placeholder);
+
+        const available = registry.zones.filter(function (zone) {
+            return (
+                zone.site_id === siteId &&
+                zone.is_enabled === true &&
+                !zone.assigned_agent_id
+            );
+        });
+
+        available.forEach(function (zone) {
+            const option = document.createElement("option");
+            option.value = zone.id;
+            option.textContent = zone.name;
+            el.agentZone.appendChild(option);
+        });
+
+        el.agentZone.disabled = available.length === 0;
+
+        if ([...el.agentZone.options].some(function (option) {
+            return option.value === selected;
+        })) {
+            el.agentZone.value = selected;
+        }
+    }
+
+    function renderSummary() {
+        el.agentCount.textContent = String(registry.agents.length);
+        el.agentZoneCount.textContent = String(registry.zones.length);
+
+        const waiting = enrollments.filter(function (item) {
+            return item.status === "waiting";
+        }).length;
+
+        el.agentWaitingEnrollmentCount.textContent = String(waiting);
+    }
+
+    function render() {
+        renderSummary();
+        renderAgents();
+        renderZones();
+        renderEnrollments();
+        populateSites();
+    }
+
+    async function refreshData(showLoading) {
+        if (showLoading !== false) setState("loading");
+
+        try {
+            const results = await Promise.all([
+                api("/api/agents"),
+                api("/api/agent-enrollments")
+            ]);
+
+            registry = results[0] && results[0].data
+                ? results[0].data
+                : { agents: [], sites: [], zones: [] };
+
+            enrollments = results[1] && Array.isArray(results[1].data)
+                ? results[1].data
+                : [];
+
+            render();
+            setState("ready");
+        } catch (error) {
+            el.agentManagementErrorText.textContent =
+                error.message || "Agent information could not be loaded.";
+            setState("error");
+        }
+    }
+
+    async function createEnrollment(event) {
+        event.preventDefault();
+
+        if (!el.agentCreateForm) return;
+
+        el.agentCreateSubmit.disabled = true;
+        el.agentCreateStatus.textContent = "Creating enrollment...";
+
+        try {
+            const payload = await api("/api/agent-enrollments", {
+                method: "POST",
+                headers: {
+                    "Accept": "application/json",
+                    "Content-Type": "application/json"
+                },
+                body: JSON.stringify({
+                    site_id: el.agentSite.value,
+                    agent_zone_id: el.agentZone.value,
+                    display_name: el.agentDisplayName.value.trim()
+                })
+            });
+
+            const enrollment = payload.data;
+            showOneTimeToken({
+                token: enrollment.enrollment_token,
+                expiresAt: enrollment.expires_at,
+                title: "Enrollment created",
+                copy: "This token creates a new Agent identity. Keep it private. " +
+                    "MinerOps does not store the plaintext token.",
+                endpoint: "/api/agent-enrollments/windows-package",
+                filename: "MinerOpsAgent-Windows.zip"
+            });
+            el.agentCreateStatus.textContent = "Enrollment created.";
+
+            el.agentDisplayName.value = "";
+
+            await refreshData(false);
+        } catch (error) {
+            el.agentCreateStatus.textContent =
+                error.message || "Enrollment could not be created.";
+        } finally {
+            el.agentCreateSubmit.disabled = false;
+        }
+    }
+
+    function showOneTimeToken(options) {
+        el.agentEnrollmentToken.textContent = options.token;
+        el.agentEnrollmentExpires.textContent =
+            "Expires " + dateTime(options.expiresAt);
+        el.agentEnrollmentResultTitle.textContent = options.title;
+        el.agentEnrollmentResultCopy.textContent = options.copy;
+        el.agentEnrollmentCopyStatus.textContent = "";
+        el.agentEnrollmentResult.hidden = false;
+        packageEndpoint = options.endpoint;
+        packageFilename = options.filename;
+    }
+
+    async function createCredentialTransition(agent) {
+        const confirmed = window.confirm(
+            "Create a one-time credential upgrade for " + agent.agent_id +
+            "? Its Agent identity, Site, and Zone will remain unchanged."
+        );
+        if (!confirmed) return;
+
+        try {
+            const payload = await api("/api/agent-credential-transitions", {
+                method: "POST",
+                headers: {
+                    "Accept": "application/json",
+                    "Content-Type": "application/json"
+                },
+                body: JSON.stringify({agent_id: agent.agent_id})
+            });
+            const transition = payload.data;
+            showOneTimeToken({
+                token: transition.transition_token,
+                expiresAt: transition.expires_at,
+                title: "Existing Agent credential upgrade created",
+                copy: "This token is bound to the existing Agent identity " +
+                    transition.target_agent_id + ". It cannot enroll a new " +
+                    "Agent or transfer its Zone.",
+                endpoint: "/api/agent-credential-transitions/windows-package",
+                filename: "MinerOpsAgent-Credential-Upgrade-Windows.zip"
+            });
+            el.agentCreateStatus.textContent =
+                "Credential upgrade created for " + transition.target_agent_id + ".";
+            await refreshData(false);
+        } catch (error) {
+            el.agentCreateStatus.textContent =
+                error.message || "Credential upgrade could not be created.";
+        }
+    }
+
+    async function downloadWindowsPackage() {
+        const token = el.agentEnrollmentToken.textContent;
+
+        if (!token) {
+            el.agentEnrollmentCopyStatus.textContent =
+                "No enrollment token is available to download.";
+            return;
+        }
+
+        el.agentEnrollmentDownload.disabled = true;
+        el.agentEnrollmentCopyStatus.textContent =
+            "Building Windows Agent package...";
+
+        try {
+            const response = await fetch(
+                packageEndpoint,
+                {
+                    method: "POST",
+                    credentials: "same-origin",
+                    cache: "no-store",
+                    headers: {
+                        "Accept": "application/zip",
+                        "Content-Type": "application/json"
+                    },
+                    body: JSON.stringify({
+                        token: token
+                    })
+                }
+            );
+
+            if (!response.ok) {
+                const payload = await response.json().catch(function () {
+                    return {};
+                });
+
+                throw new Error(
+                    payload && payload.detail
+                        ? String(payload.detail)
+                        : "Package request failed with status " +
+                            response.status + "."
+                );
+            }
+
+            const blob = await response.blob();
+            const downloadUrl = window.URL.createObjectURL(blob);
+            const link = document.createElement("a");
+
+            link.href = downloadUrl;
+            link.download = packageFilename;
+
+            document.body.appendChild(link);
+            link.click();
+            link.remove();
+
+            window.URL.revokeObjectURL(downloadUrl);
+
+            dismissToken();
+
+            el.agentCreateStatus.textContent =
+                "Windows Agent package downloaded. " +
+                "The on-screen token has been cleared.";
+        } catch (error) {
+            el.agentEnrollmentCopyStatus.textContent =
+                error.message || "Windows package could not be downloaded.";
+        } finally {
+            el.agentEnrollmentDownload.disabled = false;
+        }
+    }
+
+    async function copyToken() {
+        const token = el.agentEnrollmentToken.textContent;
+
+        if (!token) return;
+
+        try {
+            await navigator.clipboard.writeText(token);
+            el.agentEnrollmentCopyStatus.textContent =
+                "Enrollment token copied.";
+        } catch (error) {
+            el.agentEnrollmentCopyStatus.textContent =
+                "Copy was unavailable. Select and copy the token manually.";
+        }
+    }
+
+    function dismissToken() {
+        el.agentEnrollmentToken.textContent = "";
+        el.agentEnrollmentExpires.textContent = "";
+        el.agentEnrollmentCopyStatus.textContent = "";
+        el.agentEnrollmentResult.hidden = true;
+    }
+
+    el.agentManagementRetry.addEventListener("click", function () {
+        refreshData(true);
+    });
+
+    if (el.agentManagementRefresh) {
+        el.agentManagementRefresh.addEventListener("click", function () {
+            refreshData(true);
+        });
+    }
+
+    if (el.agentSite) {
+        el.agentSite.addEventListener("change", populateZones);
+    }
+
+    if (el.agentCreateForm) {
+        el.agentCreateForm.addEventListener("submit", createEnrollment);
+    }
+
+    if (el.agentEnrollmentDownload) {
+        el.agentEnrollmentDownload.addEventListener(
+            "click",
+            downloadWindowsPackage
+        );
+    }
+
+    if (el.agentEnrollmentCopy) {
+        el.agentEnrollmentCopy.addEventListener("click", copyToken);
+    }
+
+    if (el.agentEnrollmentDismiss) {
+        el.agentEnrollmentDismiss.addEventListener(
+            "click",
+            dismissToken
+        );
+    }
+
+    refreshData(true);
+}());

backend/app/frontend/static/app.css

@@ -1722,3 +1722,135 @@ button.map-position:hover {
 @media (prefers-reduced-motion: reduce) {
     .miner-detail-hero *, .disclosure-list * { scroll-behavior: auto; }
 }
+
+.control-capability-grid {
+    display: grid;
+    grid-template-columns: repeat(3, minmax(0, 1fr));
+    gap: 10px;
+    margin: 14px 0;
+}
+
+.control-capability-grid > div {
+    padding: 10px;
+    border: 1px solid var(--line);
+    background: #f7f8fa;
+}
+
+.miner-control-actions,
+.performance-control {
+    display: flex;
+    align-items: end;
+    gap: 10px;
+}
+
+.miner-control-actions {
+    margin: 12px 0;
+}
+
+.performance-control label {
+    display: block;
+    font-size: 12px;
+    font-weight: 700;
+}
+
+.status-callout {
+    margin: 12px 0;
+    padding: 10px;
+    border-left: 4px solid var(--warn);
+    background: #fff8e6;
+}
+
+@media (max-width: 720px) {
+    .control-capability-grid {
+        grid-template-columns: 1fr;
+    }
+
+    .miner-control-actions,
+    .performance-control {
+        align-items: stretch;
+        flex-direction: column;
+    }
+}
+
+/* Agent Management v1 */
+
+.agent-summary-grid {
+    display: grid;
+    grid-template-columns: repeat(3, minmax(0, 1fr));
+    gap: 16px;
+    margin-bottom: 20px;
+}
+
+.agent-summary-card {
+    display: grid;
+    gap: 6px;
+}
+
+.agent-summary-card span {
+    font-size: 0.85rem;
+}
+
+.agent-summary-card strong {
+    font-size: 2rem;
+}
+
+.agent-management-columns {
+    display: grid;
+    gap: 20px;
+    margin-bottom: 20px;
+}
+
+.agent-table td:first-child {
+    display: grid;
+    gap: 4px;
+}
+
+.agent-create-form {
+    display: grid;
+    grid-template-columns: repeat(2, minmax(0, 1fr));
+    gap: 16px;
+}
+
+.agent-create-form .agent-form-actions,
+.agent-create-form #agentCreateStatus {
+    grid-column: 1 / -1;
+}
+
+.agent-form-actions {
+    display: flex;
+    flex-wrap: wrap;
+    gap: 10px;
+    align-items: center;
+}
+
+.agent-enrollment-result {
+    margin-top: 20px;
+    padding-top: 20px;
+    border-top: 1px solid var(--line);
+}
+
+.agent-token-box {
+    overflow-wrap: anywhere;
+    padding: 14px;
+    margin: 12px 0;
+    border: 1px solid var(--line);
+    border-radius: 8px;
+    background: var(--surface-muted);
+}
+
+.agent-token-box code {
+    user-select: all;
+}
+
+@media (max-width: 760px) {
+    .agent-summary-grid,
+    .agent-create-form {
+        grid-template-columns: 1fr;
+    }
+}
+
+/* Agent Management action visibility */
+.agent-management-columns .quiet-button,
+.agent-enrollment-panel .quiet-button {
+    color: var(--ink);
+}

backend/app/frontend/static/miner-detail.js

@@ -5,6 +5,7 @@
 
     const minerId = document.body.dataset.minerId;
     const returnTo = document.body.dataset.returnTo || "";
+    const canControl = document.body.dataset.canControlMiners === "true";
     const el = {
         loading: document.getElementById("minerDetailLoading"),
         error: document.getElementById("minerDetailError"),
@@ -32,7 +33,17 @@
         identityHistory: document.getElementById("minerIdentityHistory"),
         identityHistoryBody: document.getElementById("minerIdentityHistoryBody"),
         observations: document.getElementById("minerObservations"),
-        observationsBody: document.getElementById("minerObservationsBody")
+        observationsBody: document.getElementById("minerObservationsBody"),
+        controlsRefresh: document.getElementById("minerControlsRefresh"),
+        controlsSummary: document.getElementById("minerControlsSummary"),
+        controlCapabilities: document.getElementById("minerControlCapabilities"),
+        controlActions: document.getElementById("minerControlActions"),
+        controlPermission: document.getElementById("minerControlPermission"),
+        controlResult: document.getElementById("minerControlResult"),
+        serviceControl: document.getElementById("minerServiceControl"),
+        performanceForm: document.getElementById("minerPerformanceControl"),
+        performanceMode: document.getElementById("minerPerformanceMode"),
+        controlHistory: document.getElementById("minerControlHistory")
     };
 
     function create(tag, className, text) {
@@ -121,6 +132,123 @@
         return payload ? payload.data : null;
     }
 
+    async function mutate(path, body) {
+        const response = await fetch(path, {
+            method: "POST",
+            credentials: "same-origin",
+            headers: { Accept: "application/json", "Content-Type": "application/json" },
+            body: JSON.stringify(body)
+        });
+        if (response.status === 401) {
+            window.location.assign("/login?next=" + encodeURIComponent(
+                window.location.pathname + window.location.search
+            ));
+            throw new Error("Login required");
+        }
+        let payload = null;
+        try { payload = await response.json(); } catch (_error) { payload = null; }
+        if (!response.ok) {
+            throw new Error(payload && payload.detail
+                ? String(payload.detail) : "Request failed (" + response.status + ")");
+        }
+        return payload ? payload.data : null;
+    }
+
+    function capabilityText(capability) {
+        if (!capability) return "Unknown";
+        const reason = capability.reason ? " / " + words(capability.reason) : "";
+        return words(capability.state) + reason;
+    }
+
+    function operationStatus(operation) {
+        if (operation.status === "pending") return "Pending";
+        if (operation.status === "claimed") return "Running";
+        if (operation.status === "failed") return "Failed";
+        if (operation.status === "cancelled") return "Cancelled";
+        if (operation.verification_status === "confirmed") return "Confirmed";
+        if (operation.verification_status === "unconfirmed") return "Unconfirmed";
+        if (operation.verification_status === "verification_failed") return "Verification failed";
+        if (operation.verification_status === "unavailable") return "Verification unavailable";
+        return "Completed";
+    }
+
+    function renderControls(data) {
+        el.controlsSummary.textContent = "Runtime: " + words(data.runtime_state) +
+            " / Known mode: " + words(data.performance_mode);
+        el.controlCapabilities.replaceChildren();
+        [["Agent", data.agent], ["Service control", data.service_control],
+            ["Performance mode", data.performance_mode_control]].forEach(function (item) {
+            const block = create("div");
+            block.append(create("span", "secondary", item[0]),
+                create("strong", "", capabilityText(item[1])));
+            el.controlCapabilities.appendChild(block);
+        });
+
+        el.controlPermission.hidden = canControl;
+        el.controlActions.hidden = !canControl;
+        el.serviceControl.hidden = true;
+        el.performanceForm.hidden = true;
+        if (canControl && data.available_service_action) {
+            el.serviceControl.dataset.action = data.available_service_action;
+            el.serviceControl.textContent = data.available_service_action === "suspend"
+                ? "Suspend miner" : "Resume miner";
+            el.serviceControl.hidden = false;
+        }
+        if (canControl && data.performance_mode_control.state === "supported") {
+            if (data.performance_mode) el.performanceMode.value = data.performance_mode;
+            el.performanceForm.hidden = false;
+        }
+
+        el.controlHistory.replaceChildren();
+        (data.recent_operations || []).forEach(function (operation) {
+            const row = create("tr");
+            [words(operation.action), display(operation.requested_value, "None"),
+                operationStatus(operation), words(operation.verification_status),
+                dateTime(operation.created_at)].forEach(function (value) {
+                row.appendChild(create("td", "", value));
+            });
+            el.controlHistory.appendChild(row);
+        });
+        if (!(data.recent_operations || []).length) {
+            const row = create("tr");
+            const cell = create("td", "empty-copy", "No control operations recorded.");
+            cell.colSpan = 5;
+            row.appendChild(cell);
+            el.controlHistory.appendChild(row);
+        }
+    }
+
+    async function loadControls() {
+        el.controlsSummary.textContent = "Loading control capability and history.";
+        try {
+            const data = await api("/api/miners/" + encodeURIComponent(minerId) + "/controls");
+            renderControls(data);
+        } catch (error) {
+            el.controlsSummary.textContent = "Controls unavailable: " + error.message;
+        }
+    }
+
+    async function queueControl(action, requestedValue) {
+        const description = action === "performance_mode"
+            ? "set performance mode to " + requestedValue : action + " this miner";
+        if (!window.confirm("Confirm: " + description + "?")) return;
+        const pathAction = action === "performance_mode" ? "performance-mode" : action;
+        const body = action === "performance_mode" ? { mode: requestedValue } : {};
+        el.controlResult.hidden = false;
+        el.controlResult.textContent = "Queueing control operation.";
+        try {
+            const operation = await mutate(
+                "/api/miners/" + encodeURIComponent(minerId) + "/controls/" + pathAction,
+                body
+            );
+            el.controlResult.textContent = "Pending: " + words(operation.action) +
+                " operation " + operation.operation_id + ".";
+            await loadControls();
+        } catch (error) {
+            el.controlResult.textContent = "Control was not queued: " + error.message;
+        }
+    }
+
     function table(headers, rows) {
         const wrap = create("div", "table-wrap compact-history-table");
         const tableNode = create("table");
@@ -413,8 +541,21 @@
         }
     }
 
+    function refreshAll() {
+        loadOverview();
+        loadControls();
+    }
+
     el.retry.addEventListener("click", loadOverview);
-    el.refresh.addEventListener("click", loadOverview);
+    el.refresh.addEventListener("click", refreshAll);
+    el.controlsRefresh.addEventListener("click", loadControls);
+    el.serviceControl.addEventListener("click", function () {
+        queueControl(el.serviceControl.dataset.action, null);
+    });
+    el.performanceForm.addEventListener("submit", function (event) {
+        event.preventDefault();
+        queueControl("performance_mode", el.performanceMode.value);
+    });
     el.identityHistory.addEventListener("toggle", function () {
         if (el.identityHistory.open) loadIdentityHistory();
     });
@@ -422,4 +563,5 @@
         if (el.observations.open) loadObservations();
     });
     loadOverview();
+    loadControls();
 })();

backend/app/frontend/views.py

@@ -6,6 +6,7 @@ from typing import Callable
 from app.frontend.miner_detail_view import miner_detail_content
 from app.frontend.monitoring_trends_view import monitoring_trends_content
 from app.frontend.system_health_view import system_health_content
+from app.frontend.agent_management_view import agent_management_content
 
 
 NAVIGATION = (
@@ -15,6 +16,7 @@ NAVIGATION = (
     ("repairs", "Repair Center", "/operations/repairs", "repairs.view"),
     ("miners", "Miners", "/assets/miners", "miners.view"),
     ("system_health", "System Health", "/system-health", "system_health.view"),
+    ("agent_management", "Agents", "/agent/management", "agents.view"),
 )
 
 PAGE_DETAILS = {
@@ -53,6 +55,11 @@ PAGE_DETAILS = {
         "System Health",
         "Inspect application services, operational data, and maintenance facts.",
     ),
+    "agent_management": (
+        "Administration / Agents",
+        "Agent Management",
+        "Inspect Agent identities, routing boundaries, and secure enrollment.",
+    ),
 }
 
 
@@ -462,7 +469,9 @@ def render_app_page(
         else '<div class="global-search-unavailable" aria-hidden="true"></div>'
     )
     content = (
-        system_health_content()
+        agent_management_content(has_permission("agents.manage"))
+        if view == "agent_management"
+        else system_health_content()
         if view == "system_health"
         else miner_detail_content()
         if view == "miner_detail"
@@ -521,6 +530,7 @@ def render_app_page(
 </head>
 <body data-view="{escape(view)}"
     data-can-view-miners="{str(can_view_miners).lower()}"
+    data-can-control-miners="{str(has_permission("miners.control")).lower()}"
     data-can-view-locations="{str(has_permission("locations.view")).lower()}"{object_attributes}>
     <a class="skip-link" href="#mainContent">Skip to main content</a>
     <div class="app-shell">

backend/app/identity.py

@@ -699,8 +699,11 @@ def required_page_permission(path: str) -> str:
 
 def machine_agent_request(path: str) -> bool:
     exact = {
+        "/api/agent/enroll",
+        "/api/agent/credential-transition",
         "/api/agent/checkin",
         "/api/agent/config",
+        "/api/agent/known-miners",
         "/api/agent/miner-snapshots",
         "/api/agent/pool-snapshots",
         "/api/agent/commands/pending",
@@ -757,6 +760,17 @@ def component_request(path: str) -> bool:
 
 def required_api_permission(method: str, path: str) -> str | None:
     parts = path.split("/")
+    if (
+        len(parts) >= 5
+        and parts[:3] == ["", "api", "miners"]
+        and parts[4] == "controls"
+    ):
+        if method == "GET" and len(parts) == 5:
+            return "miners.view"
+        if method == "POST" and len(parts) == 6 and parts[5] in {
+            "suspend", "resume", "performance-mode"
+        }:
+            return "miners.control"
     if (
         method == "GET"
         and len(parts) == 5
@@ -766,6 +780,18 @@ def required_api_permission(method: str, path: str) -> str | None:
         return "repairs.read"
     if component_request(path):
         return "components.create" if method == "POST" else "components.read"
+    if path == "/api/agents":
+        return "agents.view"
+    if path == "/api/agent-zones":
+        return "agents.view" if method == "GET" else "agents.manage"
+    if path == "/api/agent-enrollments":
+        return "agents.view" if method == "GET" else "agents.manage"
+    if path == "/api/agent-enrollments/windows-package":
+        return "agents.manage"
+    if path == "/api/agent-credential-transitions":
+        return "agents.manage"
+    if path == "/api/agent-credential-transitions/windows-package":
+        return "agents.manage"
     if repair_parts_request(path):
         return "repairs.read" if method == "GET" else "repairs.parts.manage"
     if path.startswith("/api/admin/"):

backend/app/miner_control/__init__.py

@@ -0,0 +1 @@
+"""Typed miner control domain."""

backend/app/miner_control/dependencies.py

@@ -0,0 +1,8 @@
+"""Dependency construction for miner control."""
+
+from app.miner_control.repository import MinerControlRepository
+from app.miner_control.service import MinerControlService
+
+
+def get_miner_control_service() -> MinerControlService:
+    return MinerControlService(MinerControlRepository())

backend/app/miner_control/exceptions.py

@@ -0,0 +1,21 @@
+"""Miner control domain exceptions."""
+
+
+class MinerControlError(Exception):
+    """Base miner control error."""
+
+
+class ControlledMinerNotFound(MinerControlError):
+    """The durable miner UUID is unknown."""
+
+
+class MinerControlUnavailable(MinerControlError):
+    """The requested action cannot be safely queued."""
+
+
+class MinerControlConflict(MinerControlError):
+    """Another live control operation already exists."""
+
+
+class MinerControlActorRequired(MinerControlError):
+    """An authenticated actor UUID is required."""

backend/app/miner_control/models.py

@@ -0,0 +1,85 @@
+"""Typed contracts for miner control capabilities and operations."""
+
+from datetime import datetime
+from typing import Literal
+from uuid import UUID
+
+from pydantic import AwareDatetime, BaseModel, ConfigDict, Field
+
+
+ControlAction = Literal["suspend", "resume", "performance_mode"]
+CapabilityState = Literal["supported", "unavailable", "unknown"]
+QueueStatus = Literal["pending", "claimed", "completed", "failed", "cancelled"]
+VerificationStatus = Literal[
+    "confirmed", "verification_failed", "unconfirmed", "unavailable"
+]
+PerformanceMode = Literal["low", "normal", "high"]
+
+
+class EmptyControlRequest(BaseModel):
+    model_config = ConfigDict(extra="forbid")
+
+
+class PerformanceModeRequest(BaseModel):
+    model_config = ConfigDict(extra="forbid")
+
+    mode: PerformanceMode
+
+
+class ControlCapability(BaseModel):
+    state: CapabilityState
+    reason: str | None = None
+
+
+class ControlAgentAvailability(BaseModel):
+    state: CapabilityState
+    reason: str | None = None
+    last_checkin_at: AwareDatetime | None = None
+    version: str | None = None
+
+
+class MinerControlOperation(BaseModel):
+    operation_id: str
+    miner_id: UUID
+    action: ControlAction
+    requested_value: str | None = None
+    status: QueueStatus
+    verification_status: VerificationStatus | None = None
+    command_accepted: bool | None = None
+    observed_performance_mode: PerformanceMode | None = None
+    failure_code: str | None = None
+    created_at: AwareDatetime
+    claimed_at: AwareDatetime | None = None
+    completed_at: AwareDatetime | None = None
+
+
+class MinerControlProjection(BaseModel):
+    miner_id: UUID
+    runtime_state: str | None = None
+    performance_mode: PerformanceMode | None = None
+    agent: ControlAgentAvailability
+    service_control: ControlCapability
+    performance_mode_control: ControlCapability
+    available_service_action: Literal["suspend", "resume"] | None = None
+    recent_operations: list[MinerControlOperation]
+
+
+class MinerControlResponse(BaseModel):
+    data: MinerControlProjection
+    meta: dict[str, object] = Field(default_factory=dict)
+    error: None = None
+
+
+class MinerControlAccepted(BaseModel):
+    operation_id: str
+    miner_id: UUID
+    action: ControlAction
+    requested_value: str | None = None
+    status: Literal["pending"]
+    created_at: datetime
+
+
+class MinerControlAcceptedResponse(BaseModel):
+    data: MinerControlAccepted
+    meta: dict[str, object] = Field(default_factory=dict)
+    error: None = None

backend/app/miner_control/repository.py

@@ -0,0 +1,140 @@
+"""PostgreSQL persistence for typed miner control operations."""
+
+from collections.abc import Callable
+from typing import Any
+from uuid import UUID
+
+import psycopg
+from psycopg.errors import UniqueViolation
+from psycopg.rows import dict_row
+from psycopg.types.json import Jsonb
+
+from app.config import settings
+from app.miner_control.exceptions import MinerControlConflict
+
+
+ConnectionFactory = Callable[[], psycopg.Connection]
+LIVE_CONTROL_CONSTRAINT = "uq_agent_queue_live_miner_control"
+
+
+def default_connection_factory() -> psycopg.Connection:
+    return psycopg.connect(
+        host=settings.postgres_host,
+        port=settings.postgres_port,
+        dbname=settings.postgres_db,
+        user=settings.postgres_user,
+        password=settings.postgres_password,
+        connect_timeout=5,
+    )
+
+
+class MinerControlRepository:
+    """Resolve control facts and persist queue/audit rows atomically."""
+
+    def __init__(self, connection_factory: ConnectionFactory | None = None):
+        self._connection_factory = connection_factory or default_connection_factory
+
+    def get_control_context(self, miner_id: UUID) -> dict | None:
+        connection = self._connection_factory()
+        try:
+            with connection.cursor(row_factory=dict_row) as cur:
+                cur.execute(
+                    """
+                    SELECT miners.id, miners.site_id, miners.agent_zone_id,
+                           zones.id IS NOT NULL AS agent_zone_exists,
+                           zones.is_enabled AS agent_zone_enabled,
+                           host(miners.current_ip) AS current_ip,
+                           miners.status AS runtime_state,
+                           miners.configured_performance_mode,
+                           miners.api3_supported, miners.api3_api_switch,
+                           agents.agent_id, agents.last_checkin_at,
+                           agents.version AS agent_version, agents.last_payload
+                    FROM miners
+                    LEFT JOIN agent_zones AS zones
+                      ON zones.id = miners.agent_zone_id
+                    LEFT JOIN minerops_site_agents AS agents
+                      ON agents.agent_zone_id = miners.agent_zone_id
+                    WHERE miners.id = %s
+                    """,
+                    (miner_id,),
+                )
+                row = cur.fetchone()
+                return dict(row) if row else None
+        finally:
+            connection.close()
+
+    def list_recent(self, miner_id: UUID, limit: int = 5) -> list[dict]:
+        connection = self._connection_factory()
+        try:
+            with connection.cursor(row_factory=dict_row) as cur:
+                cur.execute(
+                    """
+                    SELECT id AS operation_id, command_status AS status,
+                           request_payload, result_payload, created_at,
+                           claimed_at, completed_at
+                    FROM minerops_agent_command_queue
+                    WHERE command_type = 'miner_control'
+                      AND request_payload ->> 'miner_id' = %s
+                      AND request_payload ->> 'schema_version' = '1'
+                    ORDER BY created_at DESC, id DESC
+                    LIMIT %s
+                    """,
+                    (str(miner_id), limit),
+                )
+                return [dict(row) for row in cur.fetchall()]
+        finally:
+            connection.close()
+
+    def enqueue_with_audit(
+        self,
+        *,
+        operation_id: str,
+        miner_id: UUID,
+        agent_id: str,
+        actor_user_id: UUID,
+        actor_username: str,
+        request_payload: dict[str, Any],
+        audit_payload: dict[str, Any],
+    ) -> dict:
+        connection = self._connection_factory()
+        try:
+            with connection.cursor(row_factory=dict_row) as cur:
+                cur.execute(
+                    """
+                    INSERT INTO minerops_agent_command_queue (
+                        id, agent_id, command_type, command_status,
+                        requested_by_user_id, requested_by_username, request_payload
+                    )
+                    VALUES (%s, %s, 'miner_control', 'pending', %s, %s, %s)
+                    RETURNING id AS operation_id, command_status AS status, created_at
+                    """,
+                    (
+                        operation_id, agent_id, str(actor_user_id), actor_username,
+                        Jsonb(request_payload),
+                    ),
+                )
+                operation = dict(cur.fetchone())
+                cur.execute(
+                    """
+                    INSERT INTO audit_logs (
+                        actor_user_id, action, entity_type, entity_id,
+                        new_value_json, related_miner_asset_id
+                    )
+                    VALUES (%s, 'miner.control.queued', 'miner', %s, %s, %s)
+                    """,
+                    (actor_user_id, miner_id, Jsonb(audit_payload), miner_id),
+                )
+            connection.commit()
+            return operation
+        except UniqueViolation as exc:
+            connection.rollback()
+            if exc.diag.constraint_name == LIVE_CONTROL_CONSTRAINT:
+                raise MinerControlConflict(
+                    "A pending or running control operation already exists for this miner"
+                ) from exc
+            raise
+        except Exception:
+            connection.rollback()
+            raise
+        finally:
+            connection.close()

backend/app/miner_control/router.py

@@ -0,0 +1,129 @@
+"""HTTP mapping for typed miner controls."""
+
+from typing import Annotated
+from urllib.parse import urlsplit
+from uuid import UUID
+
+from fastapi import APIRouter, Depends, HTTPException, Request, status
+
+from app.identity import require_permission
+from app.miner_control.dependencies import get_miner_control_service
+from app.miner_control.exceptions import (
+    ControlledMinerNotFound,
+    MinerControlConflict,
+    MinerControlUnavailable,
+)
+from app.miner_control.models import (
+    EmptyControlRequest,
+    MinerControlAcceptedResponse,
+    MinerControlResponse,
+    PerformanceModeRequest,
+)
+from app.miner_control.service import MinerControlService
+
+
+router = APIRouter(prefix="/api/miners", tags=["miner-controls"])
+ControlService = Annotated[MinerControlService, Depends(get_miner_control_service)]
+ControlViewer = Annotated[dict, Depends(require_permission("miners.view"))]
+ControlUser = Annotated[dict, Depends(require_permission("miners.control"))]
+
+
+def require_same_origin(request: Request) -> None:
+    if request.headers.get("sec-fetch-site", "").lower() == "cross-site":
+        raise HTTPException(status_code=403, detail="Cross-site control request rejected")
+    origin = request.headers.get("origin")
+    if origin:
+        parsed = urlsplit(origin)
+        if parsed.scheme not in {"http", "https"} or parsed.netloc != request.url.netloc:
+            raise HTTPException(status_code=403, detail="Cross-site control request rejected")
+
+
+def _actor(current_user: dict) -> tuple[UUID, str]:
+    return UUID(str(current_user["id"])), str(
+        current_user.get("username") or current_user.get("email") or "unknown"
+    )
+
+
+def _queue(
+    service: MinerControlService,
+    miner_id: UUID,
+    action: str,
+    requested_value: str | None,
+    current_user: dict,
+) -> MinerControlAcceptedResponse:
+    actor_id, username = _actor(current_user)
+    try:
+        operation = service.queue_control(
+            miner_id,
+            action,
+            requested_value=requested_value,
+            actor_user_id=actor_id,
+            actor_username=username,
+        )
+    except ControlledMinerNotFound as exc:
+        raise HTTPException(status_code=404, detail="Miner not found") from exc
+    except MinerControlUnavailable as exc:
+        raise HTTPException(status_code=409, detail=str(exc)) from exc
+    except MinerControlConflict as exc:
+        raise HTTPException(status_code=409, detail=str(exc)) from exc
+    return MinerControlAcceptedResponse(data=operation)
+
+
+@router.get("/{miner_id}/controls", response_model=MinerControlResponse)
+def get_miner_controls(
+    miner_id: UUID,
+    current_user: ControlViewer,
+    service: ControlService,
+) -> MinerControlResponse:
+    del current_user
+    try:
+        return MinerControlResponse(data=service.get_controls(miner_id))
+    except ControlledMinerNotFound as exc:
+        raise HTTPException(status_code=404, detail="Miner not found") from exc
+
+
+@router.post(
+    "/{miner_id}/controls/suspend",
+    response_model=MinerControlAcceptedResponse,
+    status_code=status.HTTP_202_ACCEPTED,
+    dependencies=[Depends(require_same_origin)],
+)
+def suspend_miner(
+    miner_id: UUID,
+    payload: EmptyControlRequest,
+    current_user: ControlUser,
+    service: ControlService,
+) -> MinerControlAcceptedResponse:
+    del payload
+    return _queue(service, miner_id, "suspend", None, current_user)
+
+
+@router.post(
+    "/{miner_id}/controls/resume",
+    response_model=MinerControlAcceptedResponse,
+    status_code=status.HTTP_202_ACCEPTED,
+    dependencies=[Depends(require_same_origin)],
+)
+def resume_miner(
+    miner_id: UUID,
+    payload: EmptyControlRequest,
+    current_user: ControlUser,
+    service: ControlService,
+) -> MinerControlAcceptedResponse:
+    del payload
+    return _queue(service, miner_id, "resume", None, current_user)
+
+
+@router.post(
+    "/{miner_id}/controls/performance-mode",
+    response_model=MinerControlAcceptedResponse,
+    status_code=status.HTTP_202_ACCEPTED,
+    dependencies=[Depends(require_same_origin)],
+)
+def set_performance_mode(
+    miner_id: UUID,
+    payload: PerformanceModeRequest,
+    current_user: ControlUser,
+    service: ControlService,
+) -> MinerControlAcceptedResponse:
+    return _queue(service, miner_id, "performance_mode", payload.mode, current_user)

backend/app/miner_control/service.py

@@ -0,0 +1,169 @@
+"""Business rules for typed, Agent-routed miner controls."""
+
+from typing import Any
+from uuid import UUID, uuid4
+
+from app.miner_control.exceptions import (
+    ControlledMinerNotFound,
+    MinerControlActorRequired,
+    MinerControlUnavailable,
+)
+from app.miner_control.models import (
+    ControlAgentAvailability,
+    ControlCapability,
+    MinerControlAccepted,
+    MinerControlOperation,
+    MinerControlProjection,
+)
+from app.miner_control.repository import MinerControlRepository
+
+
+KNOWN_MODES = {"low", "normal", "high"}
+RUNNING_STATES = {"online", "running"}
+STOPPED_STATES = {"suspended", "stopped"}
+
+
+class MinerControlService:
+    def __init__(self, repository: MinerControlRepository):
+        self.repository = repository
+
+    @staticmethod
+    def _capability(context: dict) -> ControlCapability:
+        if not context.get("agent_zone_id"):
+            return ControlCapability(state="unavailable", reason="agent_zone_unassigned")
+        if context.get("agent_zone_exists") is not True:
+            return ControlCapability(state="unavailable", reason="agent_zone_missing")
+        if context.get("agent_zone_enabled") is not True:
+            return ControlCapability(state="unavailable", reason="agent_zone_disabled")
+        if not context.get("agent_id"):
+            return ControlCapability(state="unavailable", reason="agent_unavailable")
+        if not context.get("current_ip"):
+            return ControlCapability(state="unavailable", reason="current_ip_missing")
+        if context.get("api3_supported") is False:
+            return ControlCapability(state="unavailable", reason="api3_unsupported")
+        if context.get("api3_supported") is not True:
+            return ControlCapability(state="unknown", reason="api3_support_unknown")
+
+        payload = context.get("last_payload") or {}
+        if payload.get("control_available") is False:
+            reason = payload.get("control_unavailable_reason")
+            return ControlCapability(
+                state="unavailable",
+                reason=reason if reason == "credentials_missing" else "agent_unavailable",
+            )
+        if payload.get("control_available") is not True:
+            return ControlCapability(
+                state="unknown", reason="agent_capability_unknown"
+            )
+        return ControlCapability(state="supported")
+
+    @staticmethod
+    def _operation(miner_id: UUID, row: dict) -> MinerControlOperation:
+        request = row.get("request_payload") or {}
+        result = row.get("result_payload") or {}
+        mode = result.get("observed_performance_mode")
+        return MinerControlOperation(
+            operation_id=row["operation_id"],
+            miner_id=miner_id,
+            action=request.get("action"),
+            requested_value=request.get("requested_value"),
+            status=row["status"],
+            verification_status=result.get("verification_status"),
+            command_accepted=result.get("command_accepted"),
+            observed_performance_mode=mode if mode in KNOWN_MODES else None,
+            failure_code=result.get("failure_code"),
+            created_at=row["created_at"],
+            claimed_at=row.get("claimed_at"),
+            completed_at=row.get("completed_at"),
+        )
+
+    def get_controls(self, miner_id: UUID) -> MinerControlProjection:
+        context = self.repository.get_control_context(miner_id)
+        if not context:
+            raise ControlledMinerNotFound("Miner not found")
+        capability = self._capability(context)
+        runtime = str(context.get("runtime_state") or "").strip().lower() or None
+        service_action = None
+        if capability.state == "supported":
+            if runtime in RUNNING_STATES:
+                service_action = "suspend"
+            elif runtime in STOPPED_STATES:
+                service_action = "resume"
+        configured_mode = str(context.get("configured_performance_mode") or "").lower()
+        return MinerControlProjection(
+            miner_id=miner_id,
+            runtime_state=runtime,
+            performance_mode=(configured_mode if configured_mode in KNOWN_MODES else None),
+            agent=ControlAgentAvailability(
+                state=capability.state,
+                reason=capability.reason,
+                last_checkin_at=context.get("last_checkin_at"),
+                version=context.get("agent_version"),
+            ),
+            service_control=capability,
+            performance_mode_control=capability,
+            available_service_action=service_action,
+            recent_operations=[
+                self._operation(miner_id, row)
+                for row in self.repository.list_recent(miner_id, limit=5)
+            ],
+        )
+
+    def queue_control(
+        self,
+        miner_id: UUID,
+        action: str,
+        *,
+        requested_value: str | None,
+        actor_user_id: UUID,
+        actor_username: str,
+    ) -> MinerControlAccepted:
+        if not actor_user_id:
+            raise MinerControlActorRequired("Authenticated actor UUID is required")
+        context = self.repository.get_control_context(miner_id)
+        if not context:
+            raise ControlledMinerNotFound("Miner not found")
+        capability = self._capability(context)
+        if capability.state != "supported":
+            raise MinerControlUnavailable(
+                capability.reason or "control_capability_not_supported"
+            )
+
+        runtime = str(context.get("runtime_state") or "").strip().lower()
+        if action == "suspend" and runtime not in RUNNING_STATES:
+            raise MinerControlUnavailable("miner_not_factually_running")
+        if action == "resume" and runtime not in STOPPED_STATES:
+            raise MinerControlUnavailable("miner_not_factually_stopped")
+        if action == "performance_mode" and requested_value not in KNOWN_MODES:
+            raise MinerControlUnavailable("invalid_performance_mode")
+
+        operation_id = str(uuid4())
+        payload: dict[str, Any] = {
+            "schema_version": 1,
+            "miner_id": str(miner_id),
+            "action": action,
+            "requested_value": requested_value,
+            "ip_address": context["current_ip"],
+        }
+        operation = self.repository.enqueue_with_audit(
+            operation_id=operation_id,
+            miner_id=miner_id,
+            agent_id=context["agent_id"],
+            actor_user_id=actor_user_id,
+            actor_username=actor_username,
+            request_payload=payload,
+            audit_payload={
+                "operation_id": operation_id,
+                "miner_id": str(miner_id),
+                "action": action,
+                "requested_value": requested_value,
+            },
+        )
+        return MinerControlAccepted(
+            operation_id=operation["operation_id"],
+            miner_id=miner_id,
+            action=action,
+            requested_value=requested_value,
+            status=operation["status"],
+            created_at=operation["created_at"],
+        )

backend/tests/test_agent_auth.py

@@ -0,0 +1,219 @@
+"""Focused tests for per-Agent authentication and legacy compatibility."""
+
+import unittest
+from datetime import datetime, timezone
+
+from app.agent_auth.exceptions import (
+    AgentAuthenticationFailed,
+    AgentAuthenticationUnavailable,
+    AgentCredentialRevoked,
+    AgentIdentityUnauthorized,
+)
+from app.agent_auth.service import AgentAuthService, hash_agent_secret
+from app.config import settings
+
+
+NOW = datetime(2026, 8, 26, tzinfo=timezone.utc)
+
+
+class FakeAgentAuthRepository:
+    def __init__(self, rows=None):
+        self.rows = rows or {}
+
+    def get_credential(self, agent_id):
+        return self.rows.get(agent_id)
+
+
+class AgentAuthServiceTests(unittest.TestCase):
+    def setUp(self):
+        self.old_id = settings.minerops_agent_id
+        self.old_secret = settings.minerops_agent_shared_secret
+        settings.minerops_agent_id = "legacy-agent"
+        settings.minerops_agent_shared_secret = "legacy-secret"
+
+    def tearDown(self):
+        settings.minerops_agent_id = self.old_id
+        settings.minerops_agent_shared_secret = self.old_secret
+
+    def service(self, rows=None):
+        return AgentAuthService(FakeAgentAuthRepository(rows))
+
+    def test_high_entropy_secret_hash_is_sha256_hex(self):
+        digest = hash_agent_secret("example-secret")
+        self.assertEqual(len(digest), 64)
+        self.assertRegex(digest, r"^[0-9a-f]{64}$")
+
+    def test_legacy_agent_without_registry_row_still_authenticates(self):
+        self.assertEqual(
+            self.service().authenticate("legacy-agent", "legacy-secret"),
+            "legacy-agent",
+        )
+
+    def test_secret_only_legacy_agent_maps_to_configured_identity(self):
+        self.assertEqual(
+            self.service().authenticate(None, "legacy-secret"),
+            "legacy-agent",
+        )
+        with self.assertRaises(AgentAuthenticationFailed):
+            self.service().authenticate(None, "wrong-secret")
+
+    def test_legacy_agent_with_null_credential_still_authenticates(self):
+        rows = {
+            "legacy-agent": {
+                "agent_id": "legacy-agent",
+                "agent_secret_hash": None,
+                "credential_created_at": None,
+                "credential_revoked_at": None,
+            }
+        }
+        self.assertEqual(
+            self.service(rows).authenticate("legacy-agent", "legacy-secret"),
+            "legacy-agent",
+        )
+
+    def test_per_agent_credential_authenticates_independently(self):
+        rows = {
+            "agent-new": {
+                "agent_id": "agent-new",
+                "agent_secret_hash": hash_agent_secret("unique-secret"),
+                "credential_created_at": NOW,
+                "credential_revoked_at": None,
+            }
+        }
+        self.assertEqual(
+            self.service(rows).authenticate("agent-new", "unique-secret"),
+            "agent-new",
+        )
+
+    def test_legacy_secret_never_authenticates_per_agent_identity(self):
+        settings.minerops_agent_id = "agent-new"
+        rows = {
+            "agent-new": {
+                "agent_id": "agent-new",
+                "agent_secret_hash": hash_agent_secret("unique-secret"),
+                "credential_created_at": NOW,
+                "credential_revoked_at": None,
+            }
+        }
+        with self.assertRaises(AgentAuthenticationFailed):
+            self.service(rows).authenticate("agent-new", "legacy-secret")
+
+    def test_wrong_per_agent_secret_is_rejected(self):
+        rows = {
+            "agent-new": {
+                "agent_id": "agent-new",
+                "agent_secret_hash": hash_agent_secret("unique-secret"),
+                "credential_created_at": NOW,
+                "credential_revoked_at": None,
+            }
+        }
+        with self.assertRaises(AgentAuthenticationFailed):
+            self.service(rows).authenticate("agent-new", "wrong-secret")
+
+    def test_revoked_per_agent_credential_never_falls_back(self):
+        settings.minerops_agent_id = "agent-new"
+        rows = {
+            "agent-new": {
+                "agent_id": "agent-new",
+                "agent_secret_hash": hash_agent_secret("unique-secret"),
+                "credential_created_at": NOW,
+                "credential_revoked_at": NOW,
+            }
+        }
+        for secret in ("unique-secret", "legacy-secret"):
+            with self.subTest(secret=secret), self.assertRaises(AgentCredentialRevoked):
+                self.service(rows).authenticate("agent-new", secret)
+
+    def test_revoked_registry_row_never_falls_back_even_without_hash(self):
+        rows = {
+            "legacy-agent": {
+                "agent_id": "legacy-agent",
+                "agent_secret_hash": None,
+                "credential_created_at": None,
+                "credential_revoked_at": NOW,
+            }
+        }
+        for agent_id in ("legacy-agent", None):
+            with self.subTest(agent_id=agent_id), self.assertRaises(
+                AgentCredentialRevoked
+            ):
+                self.service(rows).authenticate(agent_id, "legacy-secret")
+
+    def test_missing_identity_never_authenticates_enrolled_legacy_agent(self):
+        rows = {
+            "legacy-agent": {
+                "agent_id": "legacy-agent",
+                "agent_secret_hash": hash_agent_secret("unique-secret"),
+                "credential_created_at": NOW,
+                "credential_revoked_at": None,
+            }
+        }
+        for secret in ("unique-secret", "legacy-secret"):
+            with self.subTest(secret=secret), self.assertRaises(AgentAuthenticationFailed):
+                self.service(rows).authenticate(None, secret)
+
+    def test_missing_identity_reports_revoked_legacy_credential(self):
+        rows = {
+            "legacy-agent": {
+                "agent_id": "legacy-agent",
+                "agent_secret_hash": hash_agent_secret("unique-secret"),
+                "credential_created_at": NOW,
+                "credential_revoked_at": NOW,
+            }
+        }
+        with self.assertRaises(AgentCredentialRevoked):
+            self.service(rows).authenticate(None, "legacy-secret")
+
+    def test_durable_retirement_rejects_fallback_after_credentials_are_cleared(self):
+        rows = {
+            "legacy-agent": {
+                "agent_id": "legacy-agent",
+                "agent_secret_hash": None,
+                "credential_created_at": None,
+                "credential_revoked_at": None,
+                "legacy_auth_disabled_at": NOW,
+            }
+        }
+        for agent_id in ("legacy-agent", None):
+            with self.subTest(agent_id=agent_id), self.assertRaises(
+                AgentAuthenticationFailed
+            ):
+                self.service(rows).authenticate(agent_id, "legacy-secret")
+
+    def test_identity_retirement_rejects_fallback_without_current_agent_row(self):
+        rows = {
+            "legacy-agent": {
+                "agent_id": "legacy-agent",
+                "agent_secret_hash": None,
+                "credential_created_at": None,
+                "credential_revoked_at": None,
+                "legacy_auth_disabled_at": NOW,
+            }
+        }
+        for agent_id in ("legacy-agent", None):
+            with self.subTest(agent_id=agent_id), self.assertRaises(
+                AgentAuthenticationFailed
+            ):
+                self.service(rows).authenticate(agent_id, "legacy-secret")
+
+    def test_unknown_identity_does_not_use_shared_secret(self):
+        with self.assertRaises(AgentIdentityUnauthorized):
+            self.service().authenticate("unknown-agent", "legacy-secret")
+
+    def test_missing_secret_is_rejected(self):
+        with self.assertRaises(AgentAuthenticationFailed):
+            self.service().authenticate("legacy-agent", None)
+
+    def test_legacy_path_reports_unavailable_if_not_configured(self):
+        settings.minerops_agent_shared_secret = ""
+        with self.assertRaises(AgentAuthenticationUnavailable):
+            self.service().authenticate("legacy-agent", "anything")
+
+    def test_secret_only_path_requires_configured_legacy_identity(self):
+        settings.minerops_agent_id = ""
+        with self.assertRaises(AgentAuthenticationUnavailable):
+            self.service().authenticate(None, "legacy-secret")
+
+
+if __name__ == "__main__":
+    unittest.main()

backend/tests/test_agent_commands.py

@@ -0,0 +1,368 @@
+"""Focused tests for authenticated Agent queue transport."""
+
+import unittest
+from datetime import datetime, timezone
+from pathlib import Path
+
+from fastapi import FastAPI
+from fastapi.testclient import TestClient
+
+from app.agent_auth.service import AgentAuthService
+from app.agent_commands.dependencies import (
+    get_agent_auth_service,
+    get_agent_command_service,
+)
+from app.agent_commands.exceptions import (
+    AgentCommandConflict,
+    AgentResultValidationError,
+)
+from app.agent_commands.models import AgentCommandResultRequest
+from app.agent_commands.repository import CLAIM_COMMANDS_SQL
+from app.agent_commands.router import router
+from app.agent_commands.service import AgentCommandService
+from app.config import settings
+
+
+NOW = datetime(2026, 8, 24, tzinfo=timezone.utc)
+
+
+def agent_source_root() -> Path | None:
+    container_root = Path("/agents/windows")
+    if container_root.is_dir():
+        return container_root
+    repository_root = Path(__file__).parents[2] / "agents" / "windows"
+    return repository_root if repository_root.is_dir() else None
+
+
+class FakeRepository:
+    def __init__(self, row=None):
+        self.row = row or {
+            "id": "command-1", "agent_id": "test-agent",
+            "command_type": "miner_control", "command_status": "claimed",
+            "request_payload": {"action": "suspend"},
+        }
+        self.finished = []
+
+    def claim_pending(self, agent_id, limit=5):
+        return [{
+            "command_id": "command-1", "command_type": "miner_control",
+            "request_payload": {"action": "suspend"}, "created_at": NOW,
+        }]
+
+    def get_command(self, command_id):
+        return self.row if command_id == self.row.get("id") else None
+
+    def finish_command(self, *args):
+        self.finished.append(args)
+
+
+def typed_result(**overrides):
+    result = {
+        "schema_version": 1,
+        "command_accepted": True,
+        "verification_attempted": False,
+        "verification_status": "unconfirmed",
+        "observed_service_state": None,
+        "observed_performance_mode": None,
+        "failure_code": None,
+    }
+    result.update(overrides)
+    return result
+
+
+class AgentCommandServiceTests(unittest.TestCase):
+    def test_claim_query_uses_skip_locked_and_deterministic_order(self):
+        self.assertIn("FOR UPDATE SKIP LOCKED", CLAIM_COMMANDS_SQL)
+        self.assertIn("ORDER BY created_at, id", CLAIM_COMMANDS_SQL)
+        self.assertIn("queue.command_status = 'pending'", CLAIM_COMMANDS_SQL)
+
+    def test_typed_result_is_strict_and_sanitized(self):
+        repository = FakeRepository()
+        request = AgentCommandResultRequest(
+            command_id="command-1", status="completed",
+            result_payload=typed_result(), error_message="raw 192.0.2.10 vendor exception",
+        )
+        AgentCommandService(repository).submit_result("test-agent", request)
+        finished = repository.finished[0]
+        self.assertIsNone(finished[4])
+        self.assertNotIn("192.0.2.10", str(finished))
+
+    def test_wrong_agent_pending_and_terminal_results_are_rejected(self):
+        request = AgentCommandResultRequest(
+            command_id="command-1", status="completed", result_payload=typed_result()
+        )
+        with self.assertRaises(AgentCommandConflict):
+            AgentCommandService(FakeRepository()).submit_result("wrong-agent", request)
+        for queue_status in ("pending", "completed", "failed", "cancelled"):
+            with self.subTest(status=queue_status), self.assertRaises(AgentCommandConflict):
+                row = FakeRepository().row.copy()
+                row["command_status"] = queue_status
+                AgentCommandService(FakeRepository(row)).submit_result("test-agent", request)
+
+    def test_invalid_status_and_secret_fields_are_rejected(self):
+        with self.assertRaises(Exception):
+            AgentCommandResultRequest(
+                command_id="command-1", status="unknown", result_payload={}
+            )
+        for forbidden in ("password", "account", "token", "raw_response"):
+            with self.subTest(field=forbidden):
+                repository = FakeRepository()
+                request = AgentCommandResultRequest(
+                    command_id="command-1", status="completed",
+                    result_payload={**typed_result(), forbidden: "sensitive"},
+                )
+                with self.assertRaises(AgentResultValidationError):
+                    AgentCommandService(repository).submit_result("test-agent", request)
+
+    def test_suspend_resume_cannot_claim_confirmation(self):
+        for status in ("confirmed", "verification_failed"):
+            with self.subTest(status=status):
+                request = AgentCommandResultRequest(
+                    command_id="command-1", status="completed",
+                    result_payload=typed_result(
+                        verification_attempted=True, verification_status=status
+                    ),
+                )
+                with self.assertRaises(AgentResultValidationError):
+                    AgentCommandService(FakeRepository()).submit_result("test-agent", request)
+
+
+class FakeAgentAuthRepository:
+    def get_credential(self, agent_id):
+        return None
+
+
+class AgentCommandRouterTests(unittest.TestCase):
+    def setUp(self):
+        self.app = FastAPI()
+        self.app.include_router(router)
+        self.repository = FakeRepository()
+        self.app.dependency_overrides[get_agent_command_service] = lambda: AgentCommandService(
+            self.repository
+        )
+        self.app.dependency_overrides[get_agent_auth_service] = lambda: AgentAuthService(
+            FakeAgentAuthRepository()
+        )
+        self.client = TestClient(self.app)
+        self.old_id = settings.minerops_agent_id
+        self.old_secret = settings.minerops_agent_shared_secret
+        settings.minerops_agent_id = "test-agent"
+        settings.minerops_agent_shared_secret = "test-secret"
+
+    def tearDown(self):
+        settings.minerops_agent_id = self.old_id
+        settings.minerops_agent_shared_secret = self.old_secret
+        self.client.close()
+
+    def headers(self, agent="test-agent"):
+        return {
+            "X-MinerOps-Agent-ID": agent,
+            "X-MinerOps-Agent-Secret": "test-secret",
+        }
+
+    def test_poll_requires_header_identity_and_ignores_query_spoofing(self):
+        before_claim_calls = []
+        self.app.state.agent_command_before_claim = lambda: before_claim_calls.append(True)
+        self.assertEqual(self.client.get("/api/agent/commands/pending").status_code, 401)
+        self.assertEqual(
+            self.client.get(
+                "/api/agent/commands/pending?agent_id=other", headers=self.headers()
+            ).status_code,
+            200,
+        )
+        self.assertEqual(before_claim_calls, [True])
+        self.assertEqual(
+            self.client.get(
+                "/api/agent/commands/pending", headers=self.headers("other")
+            ).status_code,
+            403,
+        )
+
+    def test_result_requires_strict_claimed_contract(self):
+        response = self.client.post(
+            "/api/agent/commands/result",
+            headers=self.headers(),
+            json={
+                "command_id": "command-1", "status": "completed",
+                "result_payload": typed_result(),
+            },
+        )
+        self.assertEqual(response.status_code, 200)
+        self.assertEqual(response.json()["status"], "completed")
+        self.assertEqual(
+            self.client.post(
+                "/api/agent/commands/result", headers=self.headers(),
+                json={"command_id": "command-1", "status": "other",
+                      "result_payload": {}},
+            ).status_code,
+            422,
+        )
+
+
+class AgentSourceContractTests(unittest.TestCase):
+    def test_agent_typed_path_has_locked_commands_and_no_default_credentials(self):
+        root = agent_source_root()
+        if root is None:
+            self.skipTest("Windows Agent source is not mounted")
+        service = (root / "MinerOpsAgentService.ps1").read_text()
+        control = (root / "MinerOpsControl.ps1").read_text()
+        main = (Path(__file__).parents[1] / "app" / "main.py").read_text()
+        powershell = "\n".join(path.read_text() for path in root.glob("*.ps1"))
+        self.assertNotIn('DefaultValue "super"', service)
+        self.assertNotIn('DefaultValue "super"', powershell)
+        self.assertIn('"X-MinerOps-Agent-ID"', service)
+        self.assertIn('.agent_zone_id', service)
+        self.assertIn('"agent_zone_id"', (root / "config.example.json").read_text())
+        self.assertNotIn("?agent_id=", service)
+        self.assertIn('"get.miner.setting"', control)
+        self.assertIn("$attempt -le 3", control)
+        self.assertIn("$Payload.performance_mode", control)
+        self.assertNotIn("api3_account =", control)
+        self.assertNotIn("api3_password =", control)
+        for forbidden in ("raw_response", "raw_command", "raw_exception"):
+            with self.subTest(field=forbidden):
+                self.assertNotIn(forbidden, control.lower())
+        self.assertNotIn('"agent_secret": secret', main)
+        self.assertNotIn('"secret_length":', main)
+        self.assertIn('"secret_configured": bool(secret)', main)
+
+    def test_deployment_preserves_local_state_and_registers_established_tasks(self):
+        root = agent_source_root()
+        if root is None:
+            self.skipTest("Windows Agent source is not mounted")
+        install = (root / "install.ps1").read_text()
+        uninstall = (root / "uninstall.ps1").read_text()
+        for task in (
+            "MinerOpsAgent", "MinerOpsAgentTray",
+            "MinerOpsApi3Enrichment", "MinerOpsPoolPoller",
+        ):
+            self.assertIn(task, install)
+            self.assertIn(task, uninstall)
+        for local_path in ("agent-config.json", "agent-state.json", "logs"):
+            self.assertNotIn(f'"{local_path}"', install)
+            self.assertNotIn(f'"{local_path}"', uninstall)
+        self.assertNotIn("agent_secret", install.lower())
+        self.assertNotIn("api3_password", install.lower())
+
+
+if __name__ == "__main__":
+    unittest.main()
+
+
+class AgentTransportIsolationSourceTests(unittest.TestCase):
+    def test_known_miners_and_pool_snapshots_are_agent_zone_scoped(self):
+        main = (Path(__file__).parents[1] / "app" / "main.py").read_text()
+        identity = (Path(__file__).parents[1] / "app" / "identity.py").read_text()
+
+        known_start = main.index('@app.get("/api/agent/known-miners")')
+        known_end = main.index("# Phase 5J:", known_start)
+        known = main[known_start:known_end]
+
+        pool_start = main.index('@app.post("/api/agent/pool-snapshots")')
+        pool_end = main.index("\n@app.", pool_start + 1)
+        pool = main[pool_start:pool_end]
+
+        self.assertIn('"/api/agent/known-miners"', identity)
+
+        self.assertIn("Depends(require_agent_identity)", known)
+        self.assertIn("zone_service.routing_context", known)
+        self.assertIn("miners.agent_zone_id = $1::uuid", known)
+        self.assertNotIn("minerops_require_agent_secret", known)
+
+        self.assertIn("Depends(require_agent_identity)", pool)
+        self.assertIn("zone_service.routing_context", pool)
+        self.assertIn("agent_id = authenticated_agent_id", pool)
+        self.assertIn("agent_zone_id = %s", pool)
+        self.assertNotIn('body.get("agent_id")', pool)
+        self.assertNotIn("MINEROPS_AGENT_SHARED_SECRET", pool)
+
+    def test_windows_machine_pollers_send_agent_identity(self):
+        root = agent_source_root()
+        if root is None:
+            self.skipTest("Windows Agent source is not mounted")
+
+        for filename in (
+            "MinerOpsPoolPoller.ps1",
+            "MinerOpsApi3EnrichmentPoller.ps1",
+            "EnrichOneMiner.ps1",
+        ):
+            with self.subTest(filename=filename):
+                source = (root / filename).read_text()
+                self.assertIn("X-MinerOps-Agent-ID", source)
+                self.assertIn("X-MinerOps-Agent-Secret", source)
+
+
+class AgentEnrichmentIsolationSourceTests(unittest.TestCase):
+    def test_enrichment_routes_require_agent_identity_and_zone_scope(self):
+        main = (Path(__file__).parents[1] / "app" / "main.py").read_text()
+
+        decorators = (
+            '@app.post("/api/agent/miner-enrichment")',
+            '@app.post("/api/agent/miner-enrichment-v2")',
+            '@app.post("/api/agent/miner-enrichment-v3")',
+        )
+
+        for decorator in decorators:
+            with self.subTest(decorator=decorator):
+                start = main.index(decorator)
+                end = main.index("\n@app.", start + 1)
+                route = main[start:end]
+
+                self.assertIn("Depends(require_agent_identity)", route)
+                self.assertIn("zone_service.routing_context", route)
+                self.assertIn("agent_zone_id", route)
+                self.assertNotIn("minerops_require_agent_secret", route)
+
+        v2_start = main.index('@app.post("/api/agent/miner-enrichment-v2")')
+        v2_end = main.index("\n@app.", v2_start + 1)
+        v2 = main[v2_start:v2_end]
+        self.assertIn(
+            "AND agent_zone_id = $2::uuid",
+            v2,
+        )
+        self.assertIn(
+            "AND agent_zone_id = $3::uuid",
+            v2,
+        )
+
+        v3_start = main.index('@app.post("/api/agent/miner-enrichment-v3")')
+        v3_end = main.index("\n@app.", v3_start + 1)
+        v3 = main[v3_start:v3_end]
+        self.assertIn(
+            "AND agent_zone_id = $8::uuid",
+            v3,
+        )
+        self.assertIn(
+            "AND agent_zone_id = $7::uuid",
+            v3,
+        )
+
+    def test_api3_uses_authenticated_identity_and_never_global_agent_identity(self):
+        main = (Path(__file__).parents[1] / "app" / "main.py").read_text()
+
+        start = main.index('@app.post("/api/agent/api3-enrichment")')
+        end = main.index("\n@app.", start + 1)
+        route = main[start:end]
+
+        self.assertIn("Depends(require_agent_identity)", route)
+        self.assertIn("zone_service.routing_context", route)
+        self.assertIn("agent_id = authenticated_agent_id", route)
+        self.assertIn("agent_zone_id = %s", route)
+        self.assertIn("if miner_id is None:", route)
+        self.assertIn("continue", route)
+
+        self.assertNotIn("MINEROPS_AGENT_SHARED_SECRET", route)
+        self.assertNotIn('body.get("agent_id")', route)
+        self.assertNotIn('body.get("site_name")', route)
+        self.assertNotIn('request.headers.get("x-agent-secret")', route)
+
+    def test_legacy_config_remains_explicitly_legacy_only(self):
+        main = (Path(__file__).parents[1] / "app" / "main.py").read_text()
+
+        start = main.index('@app.get("/api/agent/config")')
+        end = main.index("\n@app.", start + 1)
+        route = main[start:end]
+
+        self.assertIn("minerops_require_agent_secret(request)", route)
+        self.assertIn('"site_name": "Plexus"', route)
+        self.assertNotIn("Depends(require_agent_identity)", route)

backend/tests/test_agent_credential_transition_postgres.py

@@ -0,0 +1,584 @@
+"""PostgreSQL security contract for existing-Agent credential transition."""
+
+from concurrent.futures import ThreadPoolExecutor
+import os
+import unittest
+from uuid import UUID, uuid4
+
+from pydantic import ValidationError
+from psycopg.rows import dict_row
+
+from app.agent_auth.exceptions import AgentAuthenticationFailed
+from app.agent_auth.repository import AgentAuthRepository
+from app.agent_auth.service import AgentAuthService, hash_agent_secret
+from app.agent_enrollment.exceptions import (
+    AgentEnrollmentConflict,
+    AgentEnrollmentCredentialCollision,
+    AgentEnrollmentTokenInvalid,
+)
+from app.agent_enrollment.models import (
+    AgentCredentialTransitionCreateRequest,
+    AgentCredentialTransitionRedeemRequest,
+    AgentEnrollmentCreateRequest,
+    AgentEnrollRequest,
+)
+from app.agent_enrollment.repository import (
+    AgentEnrollmentRepository,
+    default_connection_factory,
+)
+from app.agent_enrollment.service import AgentEnrollmentService
+from app.agent_registry.repository import AgentRegistryRepository
+from app.config import settings
+
+
+PRODUCTION_AGENT_ID = "plexus-windows-agent"
+PRODUCTION_SITE_ID = UUID("00000000-0000-4000-8000-000000002001")
+PRODUCTION_ZONE_ID = UUID("00000000-0000-4000-8000-000000002002")
+PRODUCTION_MINER_ID = UUID("00000000-0000-4000-8000-000000002003")
+
+
+def connect():
+    return default_connection_factory()
+
+
+class AgentCredentialTransitionPostgresTests(unittest.TestCase):
+    @classmethod
+    def setUpClass(cls):
+        if os.environ.get("MINEROPS_CREDENTIAL_TRANSITION_DISPOSABLE") != "1":
+            raise unittest.SkipTest(
+                "credential transition requires its disposable PostgreSQL runner"
+            )
+        if settings.minerops_agent_id != PRODUCTION_AGENT_ID:
+            raise AssertionError(
+                "runner must bind the production-shaped legacy Agent identity"
+            )
+        cls.service = AgentEnrollmentService(AgentEnrollmentRepository(connect))
+        cls.auth = AgentAuthService(AgentAuthRepository(connect))
+
+    def create_legacy_agent(
+        self,
+        agent_id,
+        *,
+        site_id=None,
+        zone_id=None,
+        enabled=True,
+        secret_hash=None,
+        revoked=False,
+    ):
+        site_id = site_id or uuid4()
+        zone_id = zone_id or uuid4()
+        connection = connect()
+        try:
+            with connection.cursor() as cur:
+                cur.execute(
+                    "INSERT INTO sites (id, name) VALUES (%s, %s)",
+                    (site_id, f"Transition Site {site_id.hex[:8]}"),
+                )
+                cur.execute(
+                    """
+                    INSERT INTO agent_zones (id, site_id, name, is_enabled)
+                    VALUES (%s, %s, %s, %s)
+                    """,
+                    (zone_id, site_id, "Default Zone", enabled),
+                )
+                cur.execute(
+                    """
+                    INSERT INTO agent_zone_network_ranges (agent_zone_id, network)
+                    VALUES (%s, '10.220.0.0/24'::cidr)
+                    """,
+                    (zone_id,),
+                )
+                cur.execute(
+                    """
+                    INSERT INTO minerops_site_agents (
+                        agent_id, site_id, agent_zone_id, site_name,
+                        display_name, agent_secret_hash,
+                        credential_created_at, credential_revoked_at
+                    )
+                    VALUES (
+                        %s, %s, %s, %s, %s, %s,
+                        CASE WHEN %s::boolean THEN now() ELSE NULL END,
+                        CASE WHEN %s::boolean THEN now() ELSE NULL END
+                    )
+                    """,
+                    (
+                        agent_id,
+                        site_id,
+                        zone_id,
+                        f"Transition Site {site_id.hex[:8]}",
+                        f"Agent {agent_id}"[:120],
+                        secret_hash,
+                        secret_hash is not None,
+                        revoked,
+                    ),
+                )
+            connection.commit()
+        finally:
+            connection.close()
+        return site_id, zone_id
+
+    def create_transition(self, agent_id):
+        return self.service.create_credential_transition(
+            AgentCredentialTransitionCreateRequest(agent_id=agent_id),
+            actor_user_id=None,
+        )
+
+    def redeem_transition(self, token, secret):
+        return AgentEnrollmentService(
+            AgentEnrollmentRepository(connect)
+        ).redeem_credential_transition(
+            AgentCredentialTransitionRedeemRequest(
+                token=token,
+                agent_secret_hash=hash_agent_secret(secret),
+            )
+        )
+
+    def agent_row(self, agent_id):
+        connection = connect()
+        try:
+            with connection.cursor(row_factory=dict_row) as cur:
+                cur.execute(
+                    """
+                    SELECT agent_id, site_id, agent_zone_id, agent_secret_hash,
+                           credential_created_at, credential_revoked_at,
+                           legacy_auth_disabled_at
+                    FROM minerops_site_agents
+                    WHERE agent_id = %s
+                    """,
+                    (agent_id,),
+                )
+                return cur.fetchone()
+        finally:
+            connection.close()
+
+    def test_01_production_identity_transitions_without_routing_change(self):
+        connection = connect()
+        try:
+            with connection.cursor() as cur:
+                cur.execute(
+                    """
+                    INSERT INTO sites (id, name)
+                    VALUES (%s, 'Plexus Mining Site')
+                    """,
+                    (PRODUCTION_SITE_ID,),
+                )
+                cur.execute(
+                    """
+                    INSERT INTO agent_zones (id, site_id, name, is_enabled)
+                    VALUES (%s, %s, 'Default Zone', true)
+                    """,
+                    (PRODUCTION_ZONE_ID, PRODUCTION_SITE_ID),
+                )
+                cur.execute(
+                    """
+                    INSERT INTO agent_zone_network_ranges (agent_zone_id, network)
+                    VALUES (%s, '192.0.2.0/24'::cidr)
+                    """,
+                    (PRODUCTION_ZONE_ID,),
+                )
+                cur.execute(
+                    """
+                    INSERT INTO minerops_site_agents (
+                        agent_id, site_id, agent_zone_id, site_name, display_name
+                    )
+                    VALUES (%s, %s, %s, 'Plexus', 'Plexus Windows Agent')
+                    """,
+                    (
+                        PRODUCTION_AGENT_ID,
+                        PRODUCTION_SITE_ID,
+                        PRODUCTION_ZONE_ID,
+                    ),
+                )
+                cur.execute(
+                    """
+                    INSERT INTO miners (
+                        id, site_id, agent_zone_id, asset_tag,
+                        current_ip, current_mac, status
+                    )
+                    VALUES (
+                        %s, %s, %s, 'TRANSITION-PRODUCTION-MINER',
+                        '192.0.2.20', '02:00:00:00:20:03', 'online'
+                    )
+                    """,
+                    (
+                        PRODUCTION_MINER_ID,
+                        PRODUCTION_SITE_ID,
+                        PRODUCTION_ZONE_ID,
+                    ),
+                )
+            connection.commit()
+        finally:
+            connection.close()
+
+        legacy_secret = settings.minerops_agent_shared_secret
+        self.assertEqual(
+            self.auth.authenticate(None, legacy_secret),
+            PRODUCTION_AGENT_ID,
+        )
+
+        transition = self.create_transition(PRODUCTION_AGENT_ID)
+        token = transition["transition_token"]
+        self.assertEqual(transition["target_agent_id"], PRODUCTION_AGENT_ID)
+        self.assertEqual(transition["site_id"], PRODUCTION_SITE_ID)
+        self.assertEqual(transition["agent_zone_id"], PRODUCTION_ZONE_ID)
+
+        connection = connect()
+        try:
+            with connection.cursor(row_factory=dict_row) as cur:
+                cur.execute(
+                    """
+                    SELECT token_hash, target_agent_id, used_at,
+                           enrolled_agent_id, site_id, agent_zone_id
+                    FROM agent_enrollments WHERE id = %s
+                    """,
+                    (transition["id"],),
+                )
+                authorization = cur.fetchone()
+        finally:
+            connection.close()
+        self.assertEqual(authorization["token_hash"], hash_agent_secret(token))
+        self.assertNotEqual(authorization["token_hash"], token)
+        self.assertEqual(authorization["target_agent_id"], PRODUCTION_AGENT_ID)
+        self.assertIsNone(authorization["used_at"])
+
+        new_secret = "production-shaped-per-agent-secret"
+        result = self.redeem_transition(token, new_secret)
+        self.assertEqual(result["agent_id"], PRODUCTION_AGENT_ID)
+        self.assertNotIn("agent_secret", result)
+        self.assertEqual(result["site_id"], PRODUCTION_SITE_ID)
+        self.assertEqual(result["agent_zone_id"], PRODUCTION_ZONE_ID)
+
+        # An ambiguous response is safely retryable only with the same locally
+        # generated credential; no second transition or audit event is created.
+        retried = self.redeem_transition(token, new_secret)
+        self.assertEqual(retried, result)
+        with self.assertRaises(AgentEnrollmentTokenInvalid):
+            self.redeem_transition(token, "different-secret-cannot-rotate")
+
+        self.assertEqual(
+            self.auth.authenticate(PRODUCTION_AGENT_ID, new_secret),
+            PRODUCTION_AGENT_ID,
+        )
+        for supplied_id in (None, PRODUCTION_AGENT_ID):
+            with self.subTest(supplied_id=supplied_id), self.assertRaises(
+                AgentAuthenticationFailed
+            ):
+                self.auth.authenticate(supplied_id, legacy_secret)
+
+        connection = connect()
+        try:
+            with connection.cursor(row_factory=dict_row) as cur:
+                cur.execute(
+                    """
+                    SELECT site_id, agent_zone_id, agent_secret_hash,
+                           credential_created_at, legacy_auth_disabled_at
+                    FROM minerops_site_agents WHERE agent_id = %s
+                    """,
+                    (PRODUCTION_AGENT_ID,),
+                )
+                agent = cur.fetchone()
+                cur.execute(
+                    """
+                    SELECT site_id, agent_zone_id, current_mac::text,
+                           host(current_ip) AS current_ip
+                    FROM miners WHERE id = %s
+                    """,
+                    (PRODUCTION_MINER_ID,),
+                )
+                miner = cur.fetchone()
+                cur.execute(
+                    """
+                    SELECT count(*) AS retirement_count
+                    FROM agent_legacy_auth_retirements
+                    WHERE agent_id = %s
+                    """,
+                    (PRODUCTION_AGENT_ID,),
+                )
+                retirement_count = cur.fetchone()["retirement_count"]
+                cur.execute(
+                    """
+                    SELECT count(*) AS redeemed_audits
+                    FROM audit_logs
+                    WHERE action = 'agent.credential_transition.redeemed'
+                      AND entity_id = %s
+                    """,
+                    (transition["id"],),
+                )
+                redeemed_audits = cur.fetchone()["redeemed_audits"]
+        finally:
+            connection.close()
+
+        self.assertEqual(agent["site_id"], PRODUCTION_SITE_ID)
+        self.assertEqual(agent["agent_zone_id"], PRODUCTION_ZONE_ID)
+        self.assertEqual(agent["agent_secret_hash"], hash_agent_secret(new_secret))
+        self.assertIsNotNone(agent["credential_created_at"])
+        self.assertIsNotNone(agent["legacy_auth_disabled_at"])
+        self.assertEqual(miner["site_id"], PRODUCTION_SITE_ID)
+        self.assertEqual(miner["agent_zone_id"], PRODUCTION_ZONE_ID)
+        self.assertEqual(miner["current_mac"], "02:00:00:00:20:03")
+        self.assertEqual(miner["current_ip"], "192.0.2.20")
+        self.assertEqual(retirement_count, 1)
+        self.assertEqual(redeemed_audits, 1)
+
+        # Remove deletable enrollment/current state to prove that the separate
+        # append-only retirement identity still defeats fallback on recreation.
+        connection = connect()
+        try:
+            with connection.cursor() as cur:
+                cur.execute(
+                    "DELETE FROM agent_enrollments WHERE id = %s",
+                    (transition["id"],),
+                )
+                cur.execute(
+                    "DELETE FROM minerops_site_agents WHERE agent_id = %s",
+                    (PRODUCTION_AGENT_ID,),
+                )
+                cur.execute(
+                    """
+                    INSERT INTO minerops_site_agents (
+                        agent_id, site_id, agent_zone_id, site_name
+                    ) VALUES (%s, %s, %s, 'Recreated Plexus')
+                    """,
+                    (
+                        PRODUCTION_AGENT_ID,
+                        PRODUCTION_SITE_ID,
+                        PRODUCTION_ZONE_ID,
+                    ),
+                )
+            connection.commit()
+        finally:
+            connection.close()
+
+        recreated = self.agent_row(PRODUCTION_AGENT_ID)
+        self.assertIsNone(recreated["agent_secret_hash"])
+        self.assertIsNotNone(recreated["legacy_auth_disabled_at"])
+        with self.assertRaises(AgentAuthenticationFailed):
+            self.auth.authenticate(PRODUCTION_AGENT_ID, legacy_secret)
+
+    def test_02_concurrent_redemption_has_one_credential_winner(self):
+        agent_id = "transition-concurrent-agent"
+        self.create_legacy_agent(agent_id)
+        token = self.create_transition(agent_id)["transition_token"]
+        secrets = ("concurrent-secret-a", "concurrent-secret-b")
+
+        def redeem(secret):
+            try:
+                return ("success", secret, self.redeem_transition(token, secret))
+            except AgentEnrollmentTokenInvalid:
+                return ("invalid", secret, None)
+
+        with ThreadPoolExecutor(max_workers=2) as executor:
+            results = list(executor.map(redeem, secrets))
+
+        winners = [item for item in results if item[0] == "success"]
+        losers = [item for item in results if item[0] == "invalid"]
+        self.assertEqual(len(winners), 1)
+        self.assertEqual(len(losers), 1)
+        row = self.agent_row(agent_id)
+        self.assertEqual(row["agent_secret_hash"], hash_agent_secret(winners[0][1]))
+
+    def test_03_authorization_cannot_substitute_identity_or_steal_zone(self):
+        agent_a = "transition-bound-agent-a"
+        agent_b = "transition-bound-agent-b"
+        site_a, zone_a = self.create_legacy_agent(agent_a)
+        site_b, zone_b = self.create_legacy_agent(agent_b)
+        token = self.create_transition(agent_a)["transition_token"]
+
+        with self.assertRaises(ValidationError):
+            AgentCredentialTransitionRedeemRequest.model_validate(
+                {
+                    "token": token,
+                    "agent_secret_hash": hash_agent_secret("bound-secret"),
+                    "agent_id": agent_b,
+                }
+            )
+
+        result = self.redeem_transition(token, "bound-secret")
+        self.assertEqual(result["agent_id"], agent_a)
+        self.assertEqual((result["site_id"], result["agent_zone_id"]), (site_a, zone_a))
+        other = self.agent_row(agent_b)
+        self.assertEqual((other["site_id"], other["agent_zone_id"]), (site_b, zone_b))
+        self.assertIsNone(other["agent_secret_hash"])
+
+    def test_04_revoked_retired_and_disabled_targets_fail_closed(self):
+        revoked = "transition-revoked-agent"
+        self.create_legacy_agent(
+            revoked,
+            secret_hash=hash_agent_secret("revoked-secret"),
+            revoked=True,
+        )
+        with self.assertRaises(AgentEnrollmentConflict):
+            self.create_transition(revoked)
+
+        retired = "transition-retired-agent"
+        self.create_legacy_agent(retired)
+        connection = connect()
+        try:
+            with connection.cursor() as cur:
+                cur.execute(
+                    "INSERT INTO agent_legacy_auth_retirements (agent_id) VALUES (%s)",
+                    (retired,),
+                )
+            connection.commit()
+        finally:
+            connection.close()
+        with self.assertRaises(AgentEnrollmentConflict):
+            self.create_transition(retired)
+
+        disabled = "transition-disabled-agent"
+        self.create_legacy_agent(disabled, enabled=False)
+        with self.assertRaises(AgentEnrollmentConflict):
+            self.create_transition(disabled)
+
+        changed = "transition-zone-disabled-after-authorization"
+        _, changed_zone = self.create_legacy_agent(changed)
+        authorization = self.create_transition(changed)
+        connection = connect()
+        try:
+            with connection.cursor() as cur:
+                cur.execute(
+                    "UPDATE agent_zones SET is_enabled = false WHERE id = %s",
+                    (changed_zone,),
+                )
+            connection.commit()
+        finally:
+            connection.close()
+        with self.assertRaises(AgentEnrollmentConflict):
+            self.redeem_transition(
+                authorization["transition_token"], "disabled-zone-secret"
+            )
+        self.assertIsNone(self.agent_row(changed)["agent_secret_hash"])
+
+    def test_05_credential_collision_rolls_back_retirement_and_token_use(self):
+        collision_hash = hash_agent_secret("already-issued-secret")
+        self.create_legacy_agent(
+            "transition-existing-credential-holder",
+            secret_hash=collision_hash,
+        )
+        target = "transition-rollback-target"
+        self.create_legacy_agent(target)
+        transition = self.create_transition(target)
+
+        with self.assertRaises(AgentEnrollmentCredentialCollision):
+            self.service.redeem_credential_transition(
+                AgentCredentialTransitionRedeemRequest(
+                    token=transition["transition_token"],
+                    agent_secret_hash=collision_hash,
+                )
+            )
+
+        row = self.agent_row(target)
+        self.assertIsNone(row["agent_secret_hash"])
+        self.assertIsNone(row["credential_created_at"])
+        self.assertIsNone(row["legacy_auth_disabled_at"])
+        connection = connect()
+        try:
+            with connection.cursor() as cur:
+                cur.execute(
+                    """
+                    SELECT count(*) FROM agent_legacy_auth_retirements
+                    WHERE agent_id = %s
+                    """,
+                    (target,),
+                )
+                self.assertEqual(cur.fetchone()[0], 0)
+                cur.execute(
+                    """
+                    SELECT used_at, enrolled_agent_id
+                    FROM agent_enrollments WHERE id = %s
+                    """,
+                    (transition["id"],),
+                )
+                self.assertEqual(cur.fetchone(), (None, None))
+        finally:
+            connection.close()
+
+    def test_06_normal_enrollment_still_works_and_occupied_zone_is_protected(self):
+        site_id, occupied_zone = self.create_legacy_agent(
+            "transition-ordinary-occupied"
+        )
+        with self.assertRaises(AgentEnrollmentConflict):
+            self.service.create_enrollment(
+                AgentEnrollmentCreateRequest(
+                    site_id=site_id,
+                    agent_zone_id=occupied_zone,
+                    display_name="Must Not Steal Occupied Zone",
+                ),
+                actor_user_id=None,
+            )
+
+        free_zone = uuid4()
+        connection = connect()
+        try:
+            with connection.cursor() as cur:
+                cur.execute(
+                    """
+                    INSERT INTO agent_zones (id, site_id, name, is_enabled)
+                    VALUES (%s, %s, 'Free Enrollment Zone', true)
+                    """,
+                    (free_zone, site_id),
+                )
+            connection.commit()
+        finally:
+            connection.close()
+
+        enrollment = self.service.create_enrollment(
+            AgentEnrollmentCreateRequest(
+                site_id=site_id,
+                agent_zone_id=free_zone,
+                display_name="Ordinary New Agent",
+            ),
+            actor_user_id=None,
+        )
+        enrolled = self.service.redeem(
+            AgentEnrollRequest(token=enrollment["enrollment_token"])
+        )
+        self.assertRegex(enrolled["agent_id"], r"^agent-[0-9a-f]{32}$")
+        self.assertEqual(enrolled["agent_zone_id"], free_zone)
+
+    def test_07_registry_history_and_audit_never_expose_plaintext(self):
+        agent_id = "transition-privacy-agent"
+        self.create_legacy_agent(agent_id)
+        transition = self.create_transition(agent_id)
+        token = transition["transition_token"]
+
+        listed = self.service.list_enrollments()
+        item = next(row for row in listed if row["id"] == transition["id"])
+        self.assertEqual(item["target_agent_id"], agent_id)
+        self.assertEqual(item["purpose"], "existing_agent_credential_transition")
+        serialized_item = repr(item)
+        self.assertNotIn(token, serialized_item)
+        for forbidden in (
+            "token_hash",
+            "transition_token",
+            "agent_secret",
+            "agent_secret_hash",
+        ):
+            self.assertNotIn(forbidden, item)
+
+        registry = AgentRegistryRepository().list_registry()
+        registry_agent = next(
+            row for row in registry["agents"] if row["agent_id"] == agent_id
+        )
+        for forbidden in ("agent_secret", "agent_secret_hash", "token_hash"):
+            self.assertNotIn(forbidden, registry_agent)
+
+        connection = connect()
+        try:
+            with connection.cursor() as cur:
+                cur.execute(
+                    """
+                    SELECT new_value_json::text
+                    FROM audit_logs
+                    WHERE entity_id = %s
+                    """,
+                    (transition["id"],),
+                )
+                audit_text = "\n".join(row[0] for row in cur.fetchall())
+        finally:
+            connection.close()
+        self.assertNotIn(token, audit_text)
+
+
+if __name__ == "__main__":
+    unittest.main()

backend/tests/test_agent_enrollment.py

@@ -0,0 +1,305 @@
+"""Focused tests for secure Agent enrollment."""
+
+import re
+import unittest
+from datetime import datetime, timedelta, timezone
+from uuid import UUID
+
+from fastapi import FastAPI
+from fastapi.testclient import TestClient
+
+from app.agent_enrollment.dependencies import get_agent_enrollment_service
+from app.agent_auth.service import hash_agent_secret
+from app.agent_enrollment.models import (
+    AgentCredentialTransitionCreateRequest,
+    AgentCredentialTransitionRedeemRequest,
+    AgentEnrollmentCreateRequest,
+    AgentEnrollRequest,
+)
+from app.agent_enrollment.service import AgentEnrollmentService
+from app.agent_enrollment.router import router
+from app.identity import (
+    get_current_user,
+    machine_agent_request,
+    required_api_permission,
+)
+
+
+SITE_ID = UUID("00000000-0000-4000-8000-000000001700")
+ZONE_ID = UUID("00000000-0000-4000-8000-000000001701")
+USER_ID = UUID("00000000-0000-4000-8000-000000001702")
+ENROLLMENT_ID = UUID("00000000-0000-4000-8000-000000001703")
+NOW = datetime(2026, 8, 26, tzinfo=timezone.utc)
+
+
+class FakeAgentEnrollmentRepository:
+    def __init__(self):
+        self.created = None
+        self.redeemed = None
+        self.transition_created = None
+        self.transition_redeemed = None
+
+    def create_enrollment(self, **kwargs):
+        self.created = kwargs
+        return {
+            "id": ENROLLMENT_ID,
+            "site_id": SITE_ID,
+            "site_name": "Test Site",
+            "agent_zone_id": ZONE_ID,
+            "agent_zone_name": "Test Zone",
+            "display_name": kwargs["display_name"],
+            "created_at": NOW,
+            "expires_at": NOW + timedelta(minutes=30),
+        }
+
+    def list_enrollments(self, **kwargs):
+        return []
+
+    def create_credential_transition(self, **kwargs):
+        self.transition_created = kwargs
+        return {
+            "id": ENROLLMENT_ID,
+            "target_agent_id": kwargs["target_agent_id"],
+            "site_id": SITE_ID,
+            "site_name": "Test Site",
+            "agent_zone_id": ZONE_ID,
+            "agent_zone_name": "Test Zone",
+            "display_name": "Existing Agent",
+            "created_at": NOW,
+            "expires_at": NOW + timedelta(minutes=30),
+        }
+
+    def redeem_enrollment(self, **kwargs):
+        self.redeemed = kwargs
+        return {
+            "agent_id": kwargs["agent_id"],
+            "site_id": SITE_ID,
+            "site_name": "Test Site",
+            "agent_zone_id": ZONE_ID,
+            "agent_zone_name": "Test Zone",
+            "display_name": "Test Agent",
+            "ip_ranges": ["10.30.0.0/22"],
+        }
+
+    def redeem_credential_transition(self, **kwargs):
+        self.transition_redeemed = kwargs
+        return {
+            "agent_id": "existing-agent",
+            "site_id": SITE_ID,
+            "site_name": "Test Site",
+            "agent_zone_id": ZONE_ID,
+            "agent_zone_name": "Test Zone",
+            "display_name": "Existing Agent",
+            "ip_ranges": ["10.30.0.0/22"],
+        }
+
+
+class AgentEnrollmentServiceTests(unittest.TestCase):
+    def test_create_returns_plaintext_token_once_but_repository_gets_only_hash(self):
+        repository = FakeAgentEnrollmentRepository()
+        service = AgentEnrollmentService(repository)
+
+        result = service.create_enrollment(
+            AgentEnrollmentCreateRequest(
+                site_id=SITE_ID,
+                agent_zone_id=ZONE_ID,
+                display_name="  Test Agent  ",
+            ),
+            actor_user_id=USER_ID,
+        )
+
+        token = result["enrollment_token"]
+
+        self.assertGreaterEqual(len(token), 32)
+        self.assertNotEqual(repository.created["token_hash"], token)
+        self.assertEqual(
+            repository.created["token_hash"],
+            hash_agent_secret(token),
+        )
+        self.assertRegex(
+            repository.created["token_hash"],
+            r"^[0-9a-f]{64}$",
+        )
+        self.assertEqual(
+            repository.created["display_name"],
+            "Test Agent",
+        )
+
+        serialized = repr(repository.created)
+        self.assertNotIn(token, serialized)
+
+    def test_redeem_returns_plaintext_secret_but_repository_gets_only_hash(self):
+        repository = FakeAgentEnrollmentRepository()
+        service = AgentEnrollmentService(repository)
+
+        result = service.redeem(
+            AgentEnrollRequest(
+                token="A" * 43,
+            )
+        )
+
+        secret = result["agent_secret"]
+
+        self.assertGreaterEqual(len(secret), 32)
+        self.assertNotEqual(
+            repository.redeemed["agent_secret_hash"],
+            secret,
+        )
+        self.assertEqual(
+            repository.redeemed["agent_secret_hash"],
+            hash_agent_secret(secret),
+        )
+        self.assertRegex(
+            repository.redeemed["agent_secret_hash"],
+            r"^[0-9a-f]{64}$",
+        )
+
+        self.assertRegex(
+            result["agent_id"],
+            r"^agent-[0-9a-f]{32}$",
+        )
+
+        serialized = repr(repository.redeemed)
+        self.assertNotIn(secret, serialized)
+
+    def test_existing_transition_is_server_bound_and_accepts_only_secret_hash(self):
+        repository = FakeAgentEnrollmentRepository()
+        service = AgentEnrollmentService(repository)
+
+        created = service.create_credential_transition(
+            AgentCredentialTransitionCreateRequest(
+                agent_id="  existing-agent  "
+            ),
+            actor_user_id=USER_ID,
+        )
+        token = created["transition_token"]
+
+        self.assertEqual(
+            repository.transition_created["target_agent_id"],
+            "existing-agent",
+        )
+        self.assertEqual(
+            repository.transition_created["token_hash"],
+            hash_agent_secret(token),
+        )
+        self.assertNotIn(token, repr(repository.transition_created))
+
+        credential_hash = hash_agent_secret("locally-generated-secret")
+        result = service.redeem_credential_transition(
+            AgentCredentialTransitionRedeemRequest(
+                token=token,
+                agent_secret_hash=credential_hash,
+            )
+        )
+        self.assertEqual(result["agent_id"], "existing-agent")
+        self.assertEqual(
+            repository.transition_redeemed,
+            {
+                "token_hash": hash_agent_secret(token),
+                "agent_secret_hash": credential_hash,
+            },
+        )
+        self.assertNotIn("agent_secret", result)
+
+    def test_enrollment_admin_permission_mapping_is_explicit(self):
+        self.assertEqual(
+            required_api_permission("GET", "/api/agent-enrollments"),
+            "agents.view",
+        )
+        self.assertEqual(
+            required_api_permission("POST", "/api/agent-enrollments"),
+            "agents.manage",
+        )
+        self.assertEqual(
+            required_api_permission(
+                "POST", "/api/agent-credential-transitions"
+            ),
+            "agents.manage",
+        )
+
+    def test_bootstrap_endpoint_is_machine_exempt_but_admin_endpoint_is_not(self):
+        self.assertTrue(machine_agent_request("/api/agent/enroll"))
+        self.assertTrue(
+            machine_agent_request("/api/agent/credential-transition")
+        )
+        self.assertFalse(
+            machine_agent_request("/api/agent-enrollments")
+        )
+
+    def test_generated_identifiers_are_bounded(self):
+        repository = FakeAgentEnrollmentRepository()
+        service = AgentEnrollmentService(repository)
+
+        result = service.redeem(
+            AgentEnrollRequest(token="B" * 43)
+        )
+
+        self.assertLessEqual(len(result["agent_id"]), 255)
+        self.assertTrue(
+            re.fullmatch(r"agent-[0-9a-f]{32}", result["agent_id"])
+        )
+
+
+class AgentCredentialTransitionRouterTests(unittest.TestCase):
+    def setUp(self):
+        self.repository = FakeAgentEnrollmentRepository()
+        self.service = AgentEnrollmentService(self.repository)
+        self.app = FastAPI()
+        self.app.include_router(router)
+        self.app.dependency_overrides[get_agent_enrollment_service] = (
+            lambda: self.service
+        )
+        self.app.dependency_overrides[get_current_user] = lambda: {
+            "id": str(USER_ID),
+            "role": "Test",
+            "permissions": ("agents.view", "agents.manage"),
+        }
+        self.client = TestClient(self.app)
+
+    def tearDown(self):
+        self.client.close()
+
+    def test_admin_creation_is_distinct_no_store_and_identity_only(self):
+        response = self.client.post(
+            "/api/agent-credential-transitions",
+            json={"agent_id": "existing-agent"},
+        )
+        self.assertEqual(response.status_code, 201)
+        self.assertEqual(response.headers["cache-control"], "no-store")
+        payload = response.json()["data"]
+        self.assertEqual(payload["target_agent_id"], "existing-agent")
+        self.assertIn("transition_token", payload)
+        self.assertNotIn("site_id", self.repository.transition_created)
+        self.assertNotIn("agent_zone_id", self.repository.transition_created)
+
+    def test_machine_redemption_returns_no_permanent_plaintext_secret(self):
+        response = self.client.post(
+            "/api/agent/credential-transition",
+            json={
+                "token": "T" * 43,
+                "agent_secret_hash": hash_agent_secret(
+                    "locally-generated-router-secret"
+                ),
+            },
+        )
+        self.assertEqual(response.status_code, 200)
+        self.assertEqual(response.headers["cache-control"], "no-store")
+        payload = response.json()["data"]
+        self.assertEqual(payload["agent_id"], "existing-agent")
+        self.assertNotIn("agent_secret", payload)
+
+    def test_view_only_admin_cannot_create_transition(self):
+        self.app.dependency_overrides[get_current_user] = lambda: {
+            "id": str(USER_ID),
+            "role": "Test",
+            "permissions": ("agents.view",),
+        }
+        response = self.client.post(
+            "/api/agent-credential-transitions",
+            json={"agent_id": "existing-agent"},
+        )
+        self.assertEqual(response.status_code, 403)
+
+
+if __name__ == "__main__":
+    unittest.main()

backend/tests/test_agent_enrollment_postgres.py

@@ -0,0 +1,804 @@
+"""PostgreSQL integration tests for secure Agent enrollment."""
+
+import unittest
+from concurrent.futures import ThreadPoolExecutor
+from uuid import uuid4
+
+from psycopg.errors import ForeignKeyViolation
+from psycopg.rows import dict_row
+
+from app.agent_auth.exceptions import AgentAuthenticationFailed
+from app.agent_auth.repository import AgentAuthRepository
+from app.agent_auth.service import AgentAuthService, hash_agent_secret
+from app.agent_enrollment.exceptions import (
+    AgentEnrollmentConflict,
+    AgentEnrollmentCredentialCollision,
+    AgentEnrollmentNotFound,
+    AgentEnrollmentTokenInvalid,
+)
+from app.agent_enrollment.models import (
+    AgentEnrollmentCreateRequest,
+    AgentEnrollRequest,
+)
+from app.agent_enrollment.repository import (
+    AgentEnrollmentRepository,
+    default_connection_factory,
+)
+from app.agent_enrollment.service import AgentEnrollmentService
+from app.agent_zones.models import AgentCheckinRequest
+from app.agent_zones.repository import AgentZoneRepository
+from app.agent_zones.service import AgentZoneService
+from app.config import settings
+
+
+class AgentEnrollmentPostgresTests(unittest.TestCase):
+    def setUp(self):
+        self.site_id = uuid4()
+        self.zone_id = uuid4()
+        self.site_name = f"Enrollment Test Site {self.site_id.hex[:8]}"
+        self.zone_name = f"Enrollment Test Zone {self.zone_id.hex[:8]}"
+
+        connection = default_connection_factory()
+        try:
+            with connection.cursor() as cur:
+                cur.execute(
+                    """
+                    INSERT INTO sites (id, name)
+                    VALUES (%s, %s)
+                    """,
+                    (self.site_id, self.site_name),
+                )
+                cur.execute(
+                    """
+                    INSERT INTO agent_zones (
+                        id,
+                        site_id,
+                        name
+                    )
+                    VALUES (%s, %s, %s)
+                    """,
+                    (
+                        self.zone_id,
+                        self.site_id,
+                        self.zone_name,
+                    ),
+                )
+                cur.execute(
+                    """
+                    INSERT INTO agent_zone_network_ranges (
+                        agent_zone_id,
+                        network
+                    )
+                    VALUES (%s, '10.250.0.0/24'::cidr)
+                    """,
+                    (self.zone_id,),
+                )
+            connection.commit()
+        finally:
+            connection.close()
+
+        self.service = AgentEnrollmentService(
+            AgentEnrollmentRepository()
+        )
+
+    def tearDown(self):
+        connection = default_connection_factory()
+        try:
+            with connection.cursor() as cur:
+                cur.execute(
+                    """
+                    DELETE FROM audit_logs
+                    WHERE entity_type = 'agent_enrollment'
+                      AND (
+                          new_value_json ->> 'site_id' = %s
+                          OR entity_id IN (
+                              SELECT id
+                              FROM agent_enrollments
+                              WHERE site_id = %s
+                          )
+                      )
+                    """,
+                    (str(self.site_id), self.site_id),
+                )
+                cur.execute(
+                    """
+                    DELETE FROM agent_enrollments
+                    WHERE site_id = %s
+                    """,
+                    (self.site_id,),
+                )
+                cur.execute(
+                    """
+                    DELETE FROM minerops_site_agents
+                    WHERE site_id = %s
+                    """,
+                    (self.site_id,),
+                )
+                cur.execute(
+                    """
+                    DELETE FROM agent_zone_network_ranges
+                    WHERE agent_zone_id = %s
+                    """,
+                    (self.zone_id,),
+                )
+                cur.execute(
+                    """
+                    DELETE FROM agent_zones
+                    WHERE id = %s
+                    """,
+                    (self.zone_id,),
+                )
+                cur.execute(
+                    """
+                    DELETE FROM sites
+                    WHERE id = %s
+                    """,
+                    (self.site_id,),
+                )
+            connection.commit()
+        finally:
+            connection.close()
+
+    def create_enrollment(self, display_name="Integration Agent"):
+        # created_by_user_id is nullable at the persistence layer.
+        # Router-level tests separately prove that the real admin path supplies
+        # the authenticated user's UUID.
+        return self.service.create_enrollment(
+            AgentEnrollmentCreateRequest(
+                site_id=self.site_id,
+                agent_zone_id=self.zone_id,
+                display_name=display_name,
+            ),
+            actor_user_id=None,
+        )
+
+    def test_replacement_revokes_previous_open_enrollment(self):
+        first = self.create_enrollment("First Agent")
+        second = self.create_enrollment("Replacement Agent")
+
+        self.assertNotEqual(
+            first["enrollment_token"],
+            second["enrollment_token"],
+        )
+
+        connection = default_connection_factory()
+        try:
+            with connection.cursor(row_factory=dict_row) as cur:
+                cur.execute(
+                    """
+                    SELECT
+                        token_hash,
+                        used_at,
+                        revoked_at
+                    FROM agent_enrollments
+                    WHERE site_id = %s
+                      AND agent_zone_id = %s
+                    """,
+                    (self.site_id, self.zone_id),
+                )
+                rows = cur.fetchall()
+        finally:
+            connection.close()
+
+        self.assertEqual(len(rows), 2)
+
+        by_hash = {
+            row["token_hash"]: row
+            for row in rows
+        }
+
+        first_hash = hash_agent_secret(
+            first["enrollment_token"]
+        )
+        second_hash = hash_agent_secret(
+            second["enrollment_token"]
+        )
+
+        self.assertIsNotNone(by_hash[first_hash]["revoked_at"])
+        self.assertIsNone(by_hash[first_hash]["used_at"])
+
+        self.assertIsNone(by_hash[second_hash]["revoked_at"])
+        self.assertIsNone(by_hash[second_hash]["used_at"])
+
+        with self.assertRaises(AgentEnrollmentTokenInvalid):
+            self.service.redeem(
+                AgentEnrollRequest(
+                    token=first["enrollment_token"]
+                )
+            )
+
+        listed = self.service.list_enrollments(
+            site_id=self.site_id,
+            agent_zone_id=self.zone_id,
+        )
+
+        self.assertEqual(len(listed), 2)
+
+        for item in listed:
+            self.assertNotIn("token_hash", item)
+            self.assertNotIn("agent_secret_hash", item)
+            self.assertNotIn("enrollment_token", item)
+            self.assertNotIn("agent_secret", item)
+
+    def test_concurrent_creation_leaves_exactly_one_open_enrollment(self):
+        def create_one(number):
+            service = AgentEnrollmentService(
+                AgentEnrollmentRepository()
+            )
+            return service.create_enrollment(
+                AgentEnrollmentCreateRequest(
+                    site_id=self.site_id,
+                    agent_zone_id=self.zone_id,
+                    display_name=f"Concurrent Agent {number}",
+                ),
+                actor_user_id=None,
+            )
+
+        with ThreadPoolExecutor(max_workers=2) as executor:
+            results = list(
+                executor.map(create_one, (1, 2))
+            )
+
+        self.assertEqual(len(results), 2)
+
+        connection = default_connection_factory()
+        try:
+            with connection.cursor(row_factory=dict_row) as cur:
+                cur.execute(
+                    """
+                    SELECT
+                        count(*) AS total,
+                        count(*) FILTER (
+                            WHERE used_at IS NULL
+                              AND revoked_at IS NULL
+                        ) AS open_count,
+                        count(*) FILTER (
+                            WHERE revoked_at IS NOT NULL
+                        ) AS revoked_count,
+                        count(*) FILTER (
+                            WHERE revoked_at IS NOT NULL
+                              AND revoked_at < created_at
+                        ) AS invalid_revocation_count
+                    FROM agent_enrollments
+                    WHERE site_id = %s
+                      AND agent_zone_id = %s
+                    """,
+                    (self.site_id, self.zone_id),
+                )
+                counts = cur.fetchone()
+        finally:
+            connection.close()
+
+        self.assertEqual(counts["total"], 2)
+        self.assertEqual(counts["open_count"], 1)
+        self.assertEqual(counts["revoked_count"], 1)
+        self.assertEqual(counts["invalid_revocation_count"], 0)
+
+    def test_concurrent_redemption_has_exactly_one_winner(self):
+        enrollment = self.create_enrollment()
+        token = enrollment["enrollment_token"]
+
+        def redeem_once():
+            service = AgentEnrollmentService(
+                AgentEnrollmentRepository()
+            )
+            try:
+                return (
+                    "success",
+                    service.redeem(
+                        AgentEnrollRequest(token=token)
+                    ),
+                )
+            except AgentEnrollmentTokenInvalid:
+                return ("invalid", None)
+
+        with ThreadPoolExecutor(max_workers=2) as executor:
+            results = list(
+                executor.map(lambda _: redeem_once(), range(2))
+            )
+
+        successes = [
+            result
+            for status, result in results
+            if status == "success"
+        ]
+        failures = [
+            status
+            for status, _ in results
+            if status == "invalid"
+        ]
+
+        self.assertEqual(len(successes), 1)
+        self.assertEqual(len(failures), 1)
+
+        credentials = successes[0]
+        agent_id = credentials["agent_id"]
+        agent_secret = credentials["agent_secret"]
+
+        connection = default_connection_factory()
+        try:
+            with connection.cursor(row_factory=dict_row) as cur:
+                cur.execute(
+                    """
+                    SELECT
+                        agent_id,
+                        agent_secret_hash,
+                        credential_created_at,
+                        credential_revoked_at,
+                        legacy_auth_disabled_at,
+                        last_payload::text AS last_payload
+                    FROM minerops_site_agents
+                    WHERE site_id = %s
+                      AND agent_zone_id = %s
+                    """,
+                    (self.site_id, self.zone_id),
+                )
+                agents = cur.fetchall()
+
+                cur.execute(
+                    """
+                    SELECT
+                        used_at,
+                        revoked_at,
+                        enrolled_agent_id,
+                        token_hash
+                    FROM agent_enrollments
+                    WHERE id = %s
+                    """,
+                    (enrollment["id"],),
+                )
+                enrollment_row = cur.fetchone()
+
+                cur.execute(
+                    """
+                    SELECT retired_at
+                    FROM agent_legacy_auth_retirements
+                    WHERE agent_id = %s
+                    """,
+                    (agent_id,),
+                )
+                retirement_row = cur.fetchone()
+
+                cur.execute(
+                    """
+                    SELECT new_value_json::text AS payload
+                    FROM audit_logs
+                    WHERE entity_type = 'agent_enrollment'
+                      AND entity_id = %s
+                    ORDER BY created_at
+                    """,
+                    (enrollment["id"],),
+                )
+                audit_rows = cur.fetchall()
+        finally:
+            connection.close()
+
+        self.assertEqual(len(agents), 1)
+        agent = agents[0]
+
+        self.assertEqual(agent["agent_id"], agent_id)
+        self.assertEqual(
+            agent["agent_secret_hash"],
+            hash_agent_secret(agent_secret),
+        )
+        self.assertIsNotNone(agent["credential_created_at"])
+        self.assertIsNone(agent["credential_revoked_at"])
+        self.assertEqual(
+            agent["legacy_auth_disabled_at"],
+            agent["credential_created_at"],
+        )
+        self.assertIsNotNone(retirement_row)
+        self.assertEqual(
+            retirement_row["retired_at"],
+            agent["credential_created_at"],
+        )
+
+        self.assertIsNotNone(enrollment_row["used_at"])
+        self.assertIsNone(enrollment_row["revoked_at"])
+        self.assertEqual(
+            enrollment_row["enrolled_agent_id"],
+            agent_id,
+        )
+
+        # Neither plaintext credential may persist in operational state.
+        persisted_text = "\n".join(
+            [
+                str(enrollment_row),
+                str(agent),
+                *(row["payload"] for row in audit_rows),
+            ]
+        )
+
+        self.assertNotIn(token, persisted_text)
+        self.assertNotIn(agent_secret, persisted_text)
+        self.assertNotIn(agent_secret, agent["last_payload"])
+
+        # The newly issued per-Agent credential must immediately authenticate.
+        auth_service = AgentAuthService(
+            AgentAuthRepository()
+        )
+
+        self.assertEqual(
+            auth_service.authenticate(
+                agent_id,
+                agent_secret,
+            ),
+            agent_id,
+        )
+
+        with self.assertRaises(AgentAuthenticationFailed):
+            auth_service.authenticate(
+                agent_id,
+                "definitely-not-the-issued-secret",
+            )
+
+        original_legacy_id = settings.minerops_agent_id
+        original_legacy_secret = settings.minerops_agent_shared_secret
+        settings.minerops_agent_id = agent_id
+        settings.minerops_agent_shared_secret = "global-secret-must-not-work"
+        try:
+            with self.assertRaises(AgentAuthenticationFailed):
+                auth_service.authenticate(None, "global-secret-must-not-work")
+        finally:
+            settings.minerops_agent_id = original_legacy_id
+            settings.minerops_agent_shared_secret = original_legacy_secret
+
+        # Normal check-in must never mutate the credential.
+        secret_hash_before = agent["agent_secret_hash"]
+
+        AgentZoneService(
+            AgentZoneRepository()
+        ).checkin(
+            agent_id,
+            AgentCheckinRequest(
+                site_id=self.site_id,
+                agent_zone_id=self.zone_id,
+                site_name=self.site_name,
+                hostname="integration-test-agent",
+                version="integration-test",
+            ),
+        )
+
+        connection = default_connection_factory()
+        try:
+            with connection.cursor(row_factory=dict_row) as cur:
+                cur.execute(
+                    """
+                    SELECT
+                        agent_secret_hash,
+                        credential_created_at,
+                        credential_revoked_at,
+                        legacy_auth_disabled_at
+                    FROM minerops_site_agents
+                    WHERE agent_id = %s
+                    """,
+                    (agent_id,),
+                )
+                after_checkin = cur.fetchone()
+        finally:
+            connection.close()
+
+        self.assertEqual(
+            after_checkin["agent_secret_hash"],
+            secret_hash_before,
+        )
+        self.assertIsNotNone(
+            after_checkin["credential_created_at"]
+        )
+        self.assertIsNone(
+            after_checkin["credential_revoked_at"]
+        )
+        self.assertEqual(
+            after_checkin["legacy_auth_disabled_at"],
+            agent["legacy_auth_disabled_at"],
+        )
+
+        # 0017 enrollment integrity remains RESTRICT: the current Agent row
+        # cannot be deleted while its enrollment relationship exists.
+        connection = default_connection_factory()
+        try:
+            with self.assertRaises(ForeignKeyViolation):
+                with connection.cursor() as cur:
+                    cur.execute(
+                        "DELETE FROM minerops_site_agents WHERE agent_id = %s",
+                        (agent_id,),
+                    )
+            connection.rollback()
+        finally:
+            connection.close()
+
+        # After an operator deliberately removes the enrollment history, the
+        # independent retirement ledger must outlive deletion and recreation
+        # of the current Agent row with the identical identity.
+        connection = default_connection_factory()
+        try:
+            with connection.cursor() as cur:
+                cur.execute(
+                    "DELETE FROM agent_enrollments WHERE id = %s",
+                    (enrollment["id"],),
+                )
+                cur.execute(
+                    "DELETE FROM minerops_site_agents WHERE agent_id = %s",
+                    (agent_id,),
+                )
+            connection.commit()
+        finally:
+            connection.close()
+
+        original_legacy_id = settings.minerops_agent_id
+        original_legacy_secret = settings.minerops_agent_shared_secret
+        settings.minerops_agent_id = agent_id
+        settings.minerops_agent_shared_secret = "recreation-global-secret"
+        try:
+            with self.assertRaises(AgentAuthenticationFailed):
+                auth_service.authenticate(None, "recreation-global-secret")
+
+            connection = default_connection_factory()
+            try:
+                with connection.cursor(row_factory=dict_row) as cur:
+                    cur.execute(
+                        """
+                        INSERT INTO minerops_site_agents (
+                            agent_id,
+                            site_id,
+                            agent_zone_id,
+                            site_name
+                        )
+                        VALUES (%s, %s, %s, %s)
+                        RETURNING legacy_auth_disabled_at
+                        """,
+                        (
+                            agent_id,
+                            self.site_id,
+                            self.zone_id,
+                            self.site_name,
+                        ),
+                    )
+                    recreated = cur.fetchone()
+                connection.commit()
+            finally:
+                connection.close()
+
+            self.assertEqual(
+                recreated["legacy_auth_disabled_at"],
+                retirement_row["retired_at"],
+            )
+            with self.assertRaises(AgentAuthenticationFailed):
+                auth_service.authenticate(agent_id, "recreation-global-secret")
+        finally:
+            settings.minerops_agent_id = original_legacy_id
+            settings.minerops_agent_shared_secret = original_legacy_secret
+
+    def test_failed_credential_issuance_rolls_back_new_retirement(self):
+        enrollment = self.create_enrollment("Collision Agent")
+        collision_id = f"agent-collision-{uuid4().hex}"
+
+        connection = default_connection_factory()
+        try:
+            with connection.cursor() as cur:
+                cur.execute(
+                    """
+                    INSERT INTO minerops_site_agents (agent_id, site_name)
+                    VALUES (%s, 'Existing uncredentialed identity')
+                    """,
+                    (collision_id,),
+                )
+            connection.commit()
+        finally:
+            connection.close()
+
+        try:
+            with self.assertRaises(AgentEnrollmentCredentialCollision):
+                AgentEnrollmentRepository().redeem_enrollment(
+                    token_hash=hash_agent_secret(enrollment["enrollment_token"]),
+                    agent_id=collision_id,
+                    agent_secret_hash=hash_agent_secret("never-issued-secret"),
+                )
+
+            connection = default_connection_factory()
+            try:
+                with connection.cursor(row_factory=dict_row) as cur:
+                    cur.execute(
+                        """
+                        SELECT count(*) AS count
+                        FROM agent_legacy_auth_retirements
+                        WHERE agent_id = %s
+                        """,
+                        (collision_id,),
+                    )
+                    self.assertEqual(cur.fetchone()["count"], 0)
+                    cur.execute(
+                        """
+                        SELECT used_at, enrolled_agent_id
+                        FROM agent_enrollments
+                        WHERE id = %s
+                        """,
+                        (enrollment["id"],),
+                    )
+                    enrollment_row = cur.fetchone()
+            finally:
+                connection.close()
+
+            self.assertIsNone(enrollment_row["used_at"])
+            self.assertIsNone(enrollment_row["enrolled_agent_id"])
+        finally:
+            connection = default_connection_factory()
+            try:
+                with connection.cursor() as cur:
+                    cur.execute(
+                        "DELETE FROM minerops_site_agents WHERE agent_id = %s",
+                        (collision_id,),
+                    )
+                connection.commit()
+            finally:
+                connection.close()
+
+    def test_expired_token_is_rejected_without_side_effects(self):
+        enrollment = self.create_enrollment()
+
+        connection = default_connection_factory()
+        try:
+            with connection.cursor() as cur:
+                cur.execute(
+                    """
+                    UPDATE agent_enrollments
+                    SET created_at = now() - interval '2 hours',
+                        expires_at = now() - interval '1 hour'
+                    WHERE id = %s
+                    """,
+                    (enrollment["id"],),
+                )
+            connection.commit()
+        finally:
+            connection.close()
+
+        with self.assertRaises(AgentEnrollmentTokenInvalid):
+            self.service.redeem(
+                AgentEnrollRequest(
+                    token=enrollment["enrollment_token"]
+                )
+            )
+
+        connection = default_connection_factory()
+        try:
+            with connection.cursor(row_factory=dict_row) as cur:
+                cur.execute(
+                    """
+                    SELECT used_at, revoked_at, enrolled_agent_id
+                    FROM agent_enrollments
+                    WHERE id = %s
+                    """,
+                    (enrollment["id"],),
+                )
+                row = cur.fetchone()
+
+                cur.execute(
+                    """
+                    SELECT count(*) AS count
+                    FROM minerops_site_agents
+                    WHERE agent_zone_id = %s
+                    """,
+                    (self.zone_id,),
+                )
+                agent_count = cur.fetchone()["count"]
+        finally:
+            connection.close()
+
+        self.assertIsNone(row["used_at"])
+        self.assertIsNone(row["revoked_at"])
+        self.assertIsNone(row["enrolled_agent_id"])
+        self.assertEqual(agent_count, 0)
+
+    def test_disabled_and_occupied_zone_do_not_consume_token(self):
+        enrollment = self.create_enrollment()
+        token = enrollment["enrollment_token"]
+
+        connection = default_connection_factory()
+        try:
+            with connection.cursor() as cur:
+                cur.execute(
+                    """
+                    UPDATE agent_zones
+                    SET is_enabled = false
+                    WHERE id = %s
+                    """,
+                    (self.zone_id,),
+                )
+            connection.commit()
+        finally:
+            connection.close()
+
+        with self.assertRaises(AgentEnrollmentConflict):
+            self.service.redeem(
+                AgentEnrollRequest(token=token)
+            )
+
+        connection = default_connection_factory()
+        try:
+            with connection.cursor() as cur:
+                cur.execute(
+                    """
+                    UPDATE agent_zones
+                    SET is_enabled = true
+                    WHERE id = %s
+                    """,
+                    (self.zone_id,),
+                )
+                cur.execute(
+                    """
+                    INSERT INTO minerops_site_agents (
+                        agent_id,
+                        site_id,
+                        agent_zone_id,
+                        site_name
+                    )
+                    VALUES (%s, %s, %s, %s)
+                    """,
+                    (
+                        f"legacy-{uuid4().hex}",
+                        self.site_id,
+                        self.zone_id,
+                        self.site_name,
+                    ),
+                )
+            connection.commit()
+        finally:
+            connection.close()
+
+        with self.assertRaises(AgentEnrollmentConflict):
+            self.service.redeem(
+                AgentEnrollRequest(token=token)
+            )
+
+        connection = default_connection_factory()
+        try:
+            with connection.cursor(row_factory=dict_row) as cur:
+                cur.execute(
+                    """
+                    SELECT used_at, revoked_at, enrolled_agent_id
+                    FROM agent_enrollments
+                    WHERE id = %s
+                    """,
+                    (enrollment["id"],),
+                )
+                row = cur.fetchone()
+        finally:
+            connection.close()
+
+        self.assertIsNone(row["used_at"])
+        self.assertIsNone(row["revoked_at"])
+        self.assertIsNone(row["enrolled_agent_id"])
+
+    def test_site_zone_mismatch_is_rejected_before_creation(self):
+        wrong_site_id = uuid4()
+
+        with self.assertRaises(AgentEnrollmentNotFound):
+            self.service.create_enrollment(
+                AgentEnrollmentCreateRequest(
+                    site_id=wrong_site_id,
+                    agent_zone_id=self.zone_id,
+                    display_name="Wrong Site Agent",
+                ),
+                actor_user_id=None,
+            )
+
+        connection = default_connection_factory()
+        try:
+            with connection.cursor(row_factory=dict_row) as cur:
+                cur.execute(
+                    """
+                    SELECT count(*) AS count
+                    FROM agent_enrollments
+                    WHERE agent_zone_id = %s
+                    """,
+                    (self.zone_id,),
+                )
+                count = cur.fetchone()["count"]
+        finally:
+            connection.close()
+
+        self.assertEqual(count, 0)
+
+
+if __name__ == "__main__":
+    unittest.main()

backend/tests/test_agent_legacy_auth_retirement_postgres.py

@@ -0,0 +1,245 @@
+"""Disposable PostgreSQL contract for durable legacy-auth retirement."""
+
+import os
+import unittest
+
+from psycopg.errors import CheckViolation
+
+from app.agent_auth.exceptions import (
+    AgentAuthenticationFailed,
+    AgentCredentialRevoked,
+)
+from app.agent_auth.repository import AgentAuthRepository, default_connection_factory
+from app.agent_auth.service import AgentAuthService
+from app.config import settings
+
+
+class AgentLegacyAuthRetirementPostgresTests(unittest.TestCase):
+    @classmethod
+    def setUpClass(cls):
+        if os.environ.get("MINEROPS_LEGACY_RETIREMENT_DISPOSABLE") != "1":
+            raise unittest.SkipTest(
+                "legacy-auth retirement requires its disposable PostgreSQL runner"
+            )
+        cls.case = os.environ["MINEROPS_LEGACY_RETIREMENT_CASE"]
+        cls.agent_id = settings.minerops_agent_id
+        cls.auth = AgentAuthService(AgentAuthRepository())
+
+    def row(self):
+        connection = default_connection_factory()
+        try:
+            with connection.cursor() as cur:
+                cur.execute(
+                    """
+                    SELECT agent_secret_hash, credential_created_at,
+                           credential_revoked_at, legacy_auth_disabled_at
+                    FROM minerops_site_agents
+                    WHERE agent_id = %s
+                    """,
+                    (self.agent_id,),
+                )
+                return cur.fetchone()
+        finally:
+            connection.close()
+
+    def retirement_row(self, agent_id=None):
+        connection = default_connection_factory()
+        try:
+            with connection.cursor() as cur:
+                cur.execute(
+                    """
+                    SELECT agent_id, retired_at
+                    FROM agent_legacy_auth_retirements
+                    WHERE agent_id = %s
+                    """,
+                    (agent_id or self.agent_id,),
+                )
+                return cur.fetchone()
+        finally:
+            connection.close()
+
+    def test_01_migration_backfill_is_selective(self):
+        row = self.row()
+        self.assertIsNotNone(row)
+        if self.case == "legacy":
+            self.assertEqual(row, (None, None, None, None))
+            self.assertIsNone(self.retirement_row())
+        else:
+            self.assertIsNotNone(row[3])
+            retirement = self.retirement_row()
+            self.assertIsNotNone(retirement)
+            self.assertEqual(retirement[1], row[3])
+
+    def test_02_real_repository_authentication_obeys_retirement(self):
+        secret = settings.minerops_agent_shared_secret
+        if self.case == "legacy":
+            self.assertEqual(self.auth.authenticate(None, secret), self.agent_id)
+            self.assertEqual(
+                self.auth.authenticate(self.agent_id, secret), self.agent_id
+            )
+            return
+
+        for agent_id in (None, self.agent_id):
+            with self.subTest(agent_id=agent_id), self.assertRaises(
+                AgentCredentialRevoked
+            ):
+                self.auth.authenticate(agent_id, secret)
+
+    def test_03_clearing_credentials_cannot_restore_global_fallback(self):
+        if self.case == "legacy":
+            self.skipTest("uncredentialed legacy case must remain eligible")
+
+        connection = default_connection_factory()
+        try:
+            with connection.cursor() as cur:
+                cur.execute(
+                    """
+                    UPDATE minerops_site_agents
+                    SET agent_secret_hash = NULL,
+                        credential_created_at = NULL,
+                        credential_revoked_at = NULL
+                    WHERE agent_id = %s
+                    """,
+                    (self.agent_id,),
+                )
+            connection.commit()
+        finally:
+            connection.close()
+
+        row = self.row()
+        self.assertEqual(row[:3], (None, None, None))
+        self.assertIsNotNone(row[3])
+        for agent_id in (None, self.agent_id):
+            with self.subTest(agent_id=agent_id), self.assertRaises(
+                AgentAuthenticationFailed
+            ):
+                self.auth.authenticate(
+                    agent_id, settings.minerops_agent_shared_secret
+                )
+
+    def test_04_deletion_and_recreation_cannot_restore_fallback(self):
+        if self.case == "legacy":
+            self.skipTest("uncredentialed legacy case has no retirement history")
+
+        retirement = self.retirement_row()
+        self.assertIsNotNone(retirement)
+
+        connection = default_connection_factory()
+        try:
+            with connection.cursor() as cur:
+                cur.execute(
+                    "DELETE FROM minerops_site_agents WHERE agent_id = %s",
+                    (self.agent_id,),
+                )
+            connection.commit()
+        finally:
+            connection.close()
+
+        self.assertIsNone(self.row())
+        self.assertEqual(self.retirement_row(), retirement)
+        for agent_id in (None, self.agent_id):
+            with self.subTest(state="deleted", agent_id=agent_id), self.assertRaises(
+                AgentAuthenticationFailed
+            ):
+                self.auth.authenticate(
+                    agent_id, settings.minerops_agent_shared_secret
+                )
+
+        connection = default_connection_factory()
+        try:
+            with connection.cursor() as cur:
+                cur.execute(
+                    """
+                    INSERT INTO minerops_site_agents (agent_id, site_name)
+                    VALUES (%s, 'Recreated')
+                    """,
+                    (self.agent_id,),
+                )
+            connection.commit()
+        finally:
+            connection.close()
+
+        recreated = self.row()
+        self.assertEqual(recreated[:3], (None, None, None))
+        self.assertEqual(recreated[3], retirement[1])
+        for agent_id in (None, self.agent_id):
+            with self.subTest(state="recreated", agent_id=agent_id), self.assertRaises(
+                AgentAuthenticationFailed
+            ):
+                self.auth.authenticate(
+                    agent_id, settings.minerops_agent_shared_secret
+                )
+
+    def test_05_retirement_ledger_and_projection_are_one_way(self):
+        if self.case == "legacy":
+            self.skipTest("uncredentialed legacy case has no retirement history")
+
+        statements = (
+            """
+            UPDATE agent_legacy_auth_retirements
+            SET retired_at = retired_at + interval '1 second'
+            WHERE agent_id = %s
+            """,
+            """
+            DELETE FROM agent_legacy_auth_retirements
+            WHERE agent_id = %s
+            """,
+            "TRUNCATE agent_legacy_auth_retirements",
+            """
+            UPDATE minerops_site_agents
+            SET legacy_auth_disabled_at = NULL
+            WHERE agent_id = %s
+            """,
+        )
+        for statement in statements:
+            connection = default_connection_factory()
+            try:
+                with self.subTest(statement=" ".join(statement.split())):
+                    with self.assertRaises(CheckViolation):
+                        with connection.cursor() as cur:
+                            if "%s" in statement:
+                                cur.execute(statement, (self.agent_id,))
+                            else:
+                                cur.execute(statement)
+                    connection.rollback()
+            finally:
+                connection.close()
+
+        self.assertIsNotNone(self.retirement_row())
+        self.assertIsNotNone(self.row()[3])
+
+    def test_06_other_legacy_identity_is_not_accidentally_retired(self):
+        if self.case == "legacy":
+            self.skipTest("cross-identity check runs in the retired case")
+
+        other_id = self.agent_id + "-untouched"
+        connection = default_connection_factory()
+        try:
+            with connection.cursor() as cur:
+                cur.execute(
+                    """
+                    INSERT INTO minerops_site_agents (agent_id, site_name)
+                    VALUES (%s, 'Untouched')
+                    """,
+                    (other_id,),
+                )
+            connection.commit()
+        finally:
+            connection.close()
+
+        self.assertIsNone(self.retirement_row(other_id))
+        original_legacy_id = settings.minerops_agent_id
+        settings.minerops_agent_id = other_id
+        try:
+            self.assertEqual(
+                self.auth.authenticate(
+                    other_id, settings.minerops_agent_shared_secret
+                ),
+                other_id,
+            )
+        finally:
+            settings.minerops_agent_id = original_legacy_id
+
+
+if __name__ == "__main__":
+    unittest.main()

backend/tests/test_agent_management_frontend.py

@@ -0,0 +1,182 @@
+"""Frontend contract tests for Agent Management."""
+
+import unittest
+from pathlib import Path
+
+from fastapi import FastAPI
+from fastapi.testclient import TestClient
+
+from app.frontend.router import router
+from app.identity import get_current_user, required_page_permission
+
+
+STATIC_ROOT = Path(__file__).parents[1] / "app" / "frontend" / "static"
+
+
+class AgentManagementFrontendTests(unittest.TestCase):
+    def setUp(self):
+        self.app = FastAPI()
+        self.app.include_router(router)
+        self.client = TestClient(self.app)
+
+    def authenticate(self, permissions):
+        self.app.dependency_overrides[get_current_user] = lambda: {
+            "id": "00000000-0000-4000-8000-000000009001",
+            "username": "agent-test-user",
+            "display_name": "Agent Test User",
+            "role": "Test Role",
+            "permissions": tuple(permissions),
+        }
+
+    def test_page_requires_agents_view(self):
+        self.authenticate(("unrelated.permission",))
+        self.assertEqual(
+            self.client.get("/agent/management").status_code,
+            403,
+        )
+
+        self.authenticate(("agents.view",))
+        response = self.client.get("/agent/management")
+
+        self.assertEqual(response.status_code, 200)
+        self.assertIn("Agent Management", response.text)
+        self.assertIn('href="/agent/management"', response.text)
+
+    def test_manage_controls_follow_agents_manage_permission(self):
+        self.authenticate(("agents.view",))
+
+        restricted = self.client.get("/agent/management").text
+
+        self.assertNotIn('id="agentCreateForm"', restricted)
+        restricted_text = " ".join(restricted.split())
+        self.assertIn(
+            "cannot create Agent enrollments.",
+            restricted_text,
+        )
+
+        self.authenticate(("agents.view", "agents.manage"))
+
+        managed = self.client.get("/agent/management").text
+
+        self.assertIn('id="agentCreateForm"', managed)
+        self.assertIn('id="agentSite"', managed)
+        self.assertIn('id="agentZone"', managed)
+        self.assertIn('id="agentDisplayName"', managed)
+        self.assertIn('data-can-manage-agents="true"', managed)
+        self.assertIn("Linux x64 — coming later", managed)
+        self.assertIn("Linux ARM64 / Raspberry Pi — coming later", managed)
+
+    def test_route_and_asset_contract(self):
+        self.assertEqual(
+            required_page_permission("/agent/management"),
+            "agents.view",
+        )
+
+        self.authenticate(("agents.view",))
+
+        page = self.client.get("/agent/management")
+        self.assertIn(
+            "/assets/minerops-agent-management.js",
+            page.text,
+        )
+
+        asset = self.client.get(
+            "/assets/minerops-agent-management.js"
+        )
+
+        self.assertEqual(asset.status_code, 200)
+        self.assertEqual(
+            asset.headers.get("cache-control"),
+            "no-store",
+        )
+
+    def test_javascript_is_secret_conscious_and_safe_dom_only(self):
+        source = (
+            STATIC_ROOT / "agent-management.js"
+        ).read_text(encoding="utf-8")
+
+        self.assertIn('api("/api/agents")', source)
+        self.assertIn('api("/api/agent-enrollments")', source)
+        self.assertIn(
+            'api("/api/agent-enrollments", {',
+            source,
+        )
+        self.assertIn(
+            'api("/api/agent-credential-transitions", {',
+            source,
+        )
+        self.assertIn("Upgrade credential", source)
+
+        for unsafe in (
+            "innerHTML",
+            "outerHTML",
+            "insertAdjacentHTML",
+            "localStorage",
+            "sessionStorage",
+            "console.log",
+        ):
+            self.assertNotIn(unsafe, source)
+
+        self.assertIn(
+            "el.agentEnrollmentToken.textContent",
+            source,
+        )
+        self.assertIn(
+            "el.agentEnrollmentToken.textContent = \"\"",
+            source,
+        )
+
+    def test_agent_management_quiet_actions_have_visible_text(self):
+        css = (STATIC_ROOT / "app.css").read_text(encoding="utf-8")
+
+        self.assertIn(
+            ".agent-management-columns .quiet-button,",
+            css,
+        )
+        self.assertIn(
+            ".agent-enrollment-panel .quiet-button {",
+            css,
+        )
+        self.assertIn(
+            "color: var(--ink);",
+            css,
+        )
+
+    def test_windows_package_download_is_ephemeral(self):
+        self.authenticate(("agents.view", "agents.manage"))
+
+        page = self.client.get("/agent/management").text
+
+        self.assertIn('id="agentEnrollmentDownload"', page)
+        self.assertIn("Download Windows package", page)
+
+        source = (
+            STATIC_ROOT / "agent-management.js"
+        ).read_text(encoding="utf-8")
+
+        self.assertIn(
+            '"/api/agent-enrollments/windows-package"',
+            source,
+        )
+        self.assertIn(
+            'packageFilename = "MinerOpsAgent-Windows.zip"',
+            source,
+        )
+        self.assertIn("link.download = packageFilename", source)
+        self.assertIn(
+            "window.URL.revokeObjectURL(downloadUrl)",
+            source,
+        )
+        self.assertIn("dismissToken();", source)
+
+        for forbidden in (
+            "localStorage",
+            "sessionStorage",
+            "agent_secret",
+            "api3_password",
+        ):
+            self.assertNotIn(forbidden, source)
+
+
+if __name__ == "__main__":
+    unittest.main()

backend/tests/test_agent_registry.py

@@ -0,0 +1,120 @@
+"""Focused tests for the Agent Management read model."""
+
+import unittest
+from uuid import UUID
+
+from app.agent_registry.service import AgentRegistryService
+from app.identity import required_api_permission
+
+
+SITE_ID = UUID("00000000-0000-4000-8000-000000001800")
+ZONE_ID = UUID("00000000-0000-4000-8000-000000001801")
+
+
+class FakeAgentRegistryRepository:
+    def list_registry(self):
+        return {
+            "sites": [
+                {
+                    "id": SITE_ID,
+                    "name": "Test Site",
+                }
+            ],
+            "zones": [
+                {
+                    "id": ZONE_ID,
+                    "site_id": SITE_ID,
+                    "site_name": "Test Site",
+                    "name": "Network A",
+                    "description": None,
+                    "is_enabled": True,
+                    "assigned_agent_id": "agent-test",
+                    "networks": ["10.50.0.0/24"],
+                }
+            ],
+            "agents": [
+                {
+                    "agent_id": "agent-test",
+                    "display_name": "Test Agent",
+                    "site_id": SITE_ID,
+                    "site_name": "Test Site",
+                    "agent_zone_id": ZONE_ID,
+                    "agent_zone_name": "Network A",
+                    "agent_zone_enabled": True,
+                    "hostname": "test-agent",
+                    "version": "1.0.0-alpha",
+                    "ip_address": "10.50.0.10",
+                    "last_checkin_at": "2026-08-26T20:00:00+00:00",
+                    "credential_state": "active",
+                    "credential_created_at": "2026-08-26T19:00:00+00:00",
+                    "credential_revoked_at": None,
+                }
+            ],
+        }
+
+
+class AgentRegistryServiceTests(unittest.TestCase):
+    def test_projection_is_factual_and_zone_aware(self):
+        data = AgentRegistryService(
+            FakeAgentRegistryRepository()
+        ).list_registry()
+
+        self.assertEqual(len(data.agents), 1)
+        self.assertEqual(len(data.sites), 1)
+        self.assertEqual(len(data.zones), 1)
+
+        agent = data.agents[0]
+        self.assertEqual(agent.agent_id, "agent-test")
+        self.assertEqual(agent.credential_state, "active")
+        self.assertEqual(agent.routing_state, "assigned")
+        self.assertEqual(
+            data.zones[0].networks,
+            ["10.50.0.0/24"],
+        )
+
+    def test_unassigned_and_disabled_routing_are_not_fabricated_online_states(self):
+        repository = FakeAgentRegistryRepository()
+
+        repository.list_registry = lambda: {
+            "sites": [],
+            "zones": [],
+            "agents": [
+                {
+                    "agent_id": "legacy",
+                    "display_name": None,
+                    "site_id": None,
+                    "site_name": "Legacy Site",
+                    "agent_zone_id": None,
+                    "agent_zone_name": None,
+                    "agent_zone_enabled": None,
+                    "hostname": None,
+                    "version": None,
+                    "ip_address": None,
+                    "last_checkin_at": "2026-08-26T20:00:00+00:00",
+                    "credential_state": "legacy",
+                    "credential_created_at": None,
+                    "credential_revoked_at": None,
+                }
+            ],
+        }
+
+        data = AgentRegistryService(repository).list_registry()
+
+        self.assertEqual(
+            data.agents[0].routing_state,
+            "unassigned",
+        )
+        self.assertEqual(
+            data.agents[0].credential_state,
+            "legacy",
+        )
+
+    def test_api_permission_mapping_is_explicit(self):
+        self.assertEqual(
+            required_api_permission("GET", "/api/agents"),
+            "agents.view",
+        )
+
+
+if __name__ == "__main__":
+    unittest.main()

backend/tests/test_agent_registry_postgres.py

@@ -0,0 +1,196 @@
+"""PostgreSQL integration test for the Agent registry projection."""
+
+import unittest
+from uuid import uuid4
+
+from app.agent_registry.repository import (
+    AgentRegistryRepository,
+    default_connection_factory,
+)
+from app.agent_registry.service import AgentRegistryService
+
+
+class AgentRegistryPostgresTests(unittest.TestCase):
+    def setUp(self):
+        self.site_id = uuid4()
+        self.zone_id = uuid4()
+        self.agent_id = f"agent-registry-{uuid4().hex}"
+
+        connection = default_connection_factory()
+
+        try:
+            with connection.cursor() as cur:
+                cur.execute(
+                    """
+                    INSERT INTO sites (id, name)
+                    VALUES (%s, %s)
+                    """,
+                    (
+                        self.site_id,
+                        "Registry Integration Site",
+                    ),
+                )
+
+                cur.execute(
+                    """
+                    INSERT INTO agent_zones (
+                        id,
+                        site_id,
+                        name,
+                        description,
+                        is_enabled
+                    )
+                    VALUES (%s, %s, %s, %s, true)
+                    """,
+                    (
+                        self.zone_id,
+                        self.site_id,
+                        "Registry Network",
+                        "Integration-test network",
+                    ),
+                )
+
+                cur.execute(
+                    """
+                    INSERT INTO agent_zone_network_ranges (
+                        agent_zone_id,
+                        network
+                    )
+                    VALUES (%s, '10.251.0.0/24'::cidr)
+                    """,
+                    (self.zone_id,),
+                )
+
+                cur.execute(
+                    """
+                    INSERT INTO minerops_site_agents (
+                        agent_id,
+                        site_name,
+                        site_id,
+                        agent_zone_id,
+                        display_name,
+                        hostname,
+                        version,
+                        ip_address,
+                        agent_secret_hash,
+                        credential_created_at,
+                        legacy_auth_disabled_at
+                    )
+                    VALUES (
+                        %s,
+                        %s,
+                        %s,
+                        %s,
+                        %s,
+                        %s,
+                        %s,
+                        %s,
+                        %s,
+                        now(),
+                        now()
+                    )
+                    """,
+                    (
+                        self.agent_id,
+                        "Registry Integration Site",
+                        self.site_id,
+                        self.zone_id,
+                        "Registry Test Agent",
+                        "registry-agent",
+                        "1.0.0-alpha",
+                        "10.251.0.10",
+                        "a" * 64,
+                    ),
+                )
+
+            connection.commit()
+        finally:
+            connection.close()
+
+    def tearDown(self):
+        connection = default_connection_factory()
+
+        try:
+            with connection.cursor() as cur:
+                cur.execute(
+                    """
+                    DELETE FROM minerops_site_agents
+                    WHERE agent_id = %s
+                    """,
+                    (self.agent_id,),
+                )
+
+                cur.execute(
+                    """
+                    DELETE FROM agent_zone_network_ranges
+                    WHERE agent_zone_id = %s
+                    """,
+                    (self.zone_id,),
+                )
+
+                cur.execute(
+                    """
+                    DELETE FROM agent_zones
+                    WHERE id = %s
+                    """,
+                    (self.zone_id,),
+                )
+
+                cur.execute(
+                    """
+                    DELETE FROM sites
+                    WHERE id = %s
+                    """,
+                    (self.site_id,),
+                )
+
+            connection.commit()
+        finally:
+            connection.close()
+
+    def test_registry_joins_site_zone_network_and_redacts_secret_hash(self):
+        data = AgentRegistryService(
+            AgentRegistryRepository()
+        ).list_registry()
+
+        agents = [
+            item
+            for item in data.agents
+            if item.agent_id == self.agent_id
+        ]
+
+        self.assertEqual(len(agents), 1)
+
+        agent = agents[0]
+
+        self.assertEqual(
+            agent.site_name,
+            "Registry Integration Site",
+        )
+        self.assertEqual(
+            agent.agent_zone_name,
+            "Registry Network",
+        )
+        self.assertEqual(agent.credential_state, "active")
+        self.assertEqual(agent.routing_state, "assigned")
+
+        zones = [
+            zone
+            for zone in data.zones
+            if zone.id == self.zone_id
+        ]
+
+        self.assertEqual(len(zones), 1)
+        self.assertEqual(
+            zones[0].networks,
+            ["10.251.0.0/24"],
+        )
+
+        serialized = data.model_dump_json()
+
+        self.assertNotIn("agent_secret_hash", serialized)
+        self.assertNotIn("a" * 64, serialized)
+
+
+if __name__ == "__main__":
+    unittest.main()

backend/tests/test_agent_transport_isolation_postgres.py

@@ -0,0 +1,633 @@
+"""Runtime PostgreSQL isolation tests for Agent-owned machine transport."""
+
+import asyncio
+import json
+import os
+import unittest
+from uuid import UUID
+
+import psycopg
+from fastapi import HTTPException
+from starlette.requests import Request
+
+from app.agent_zones.repository import AgentZoneRepository
+from app.agent_zones.service import AgentZoneService
+from app.config import settings
+from app.main import (
+    minerops_agent_api3_enrichment,
+    minerops_agent_miner_enrichment_v2,
+    minerops_agent_miner_enrichment_v3,
+)
+
+
+SITE_A = UUID("00000000-0000-4000-8000-000000001710")
+SITE_B = UUID("00000000-0000-4000-8000-000000001711")
+ZONE_A = UUID("00000000-0000-4000-8000-000000001712")
+ZONE_B = UUID("00000000-0000-4000-8000-000000001713")
+MINER_A = UUID("00000000-0000-4000-8000-000000001714")
+MINER_B = UUID("00000000-0000-4000-8000-000000001715")
+
+AGENT_A = "agent-transport-isolation-a"
+AGENT_B = "agent-transport-isolation-b"
+
+IP_A = "198.51.100.171"
+IP_B = "198.51.100.172"
+
+MAC_A = "02:00:00:00:17:A1"
+MAC_B = "02:00:00:00:17:B1"
+
+
+def connect():
+    return psycopg.connect(
+        host=settings.postgres_host,
+        port=settings.postgres_port,
+        dbname=settings.postgres_db,
+        user=settings.postgres_user,
+        password=settings.postgres_password,
+        connect_timeout=5,
+    )
+
+
+def json_request(path, payload):
+    body = json.dumps(payload).encode("utf-8")
+    delivered = False
+
+    async def receive():
+        nonlocal delivered
+
+        if delivered:
+            return {
+                "type": "http.request",
+                "body": b"",
+                "more_body": False,
+            }
+
+        delivered = True
+
+        return {
+            "type": "http.request",
+            "body": body,
+            "more_body": False,
+        }
+
+    scope = {
+        "type": "http",
+        "asgi": {"version": "3.0"},
+        "http_version": "1.1",
+        "method": "POST",
+        "scheme": "http",
+        "path": path,
+        "raw_path": path.encode("ascii"),
+        "query_string": b"",
+        "headers": [(b"content-type", b"application/json")],
+        "client": ("testclient", 12345),
+        "server": ("testserver", 80),
+    }
+
+    return Request(scope, receive)
+
+
+class AgentTransportIsolationPostgresTests(unittest.TestCase):
+    @classmethod
+    def setUpClass(cls):
+        if os.environ.get(
+            "MINEROPS_TRANSPORT_ISOLATION_DISPOSABLE"
+        ) != "1":
+            raise unittest.SkipTest(
+                "Runtime Agent transport isolation is executed "
+                "by its dedicated disposable PostgreSQL runner."
+            )
+
+        connection = connect()
+
+        try:
+            with connection.cursor() as cur:
+                cur.execute(
+                    """
+                    INSERT INTO sites (id, name)
+                    VALUES
+                        (%s, 'Transport Isolation Site A'),
+                        (%s, 'Transport Isolation Site B')
+                    ON CONFLICT (id) DO NOTHING
+                    """,
+                    (SITE_A, SITE_B),
+                )
+
+                cur.execute(
+                    """
+                    INSERT INTO agent_zones (
+                        id,
+                        site_id,
+                        name,
+                        is_enabled
+                    )
+                    VALUES
+                        (
+                            %s,
+                            %s,
+                            'Transport Isolation Zone A',
+                            true
+                        ),
+                        (
+                            %s,
+                            %s,
+                            'Transport Isolation Zone B',
+                            true
+                        )
+                    ON CONFLICT (id) DO UPDATE
+                    SET is_enabled = true
+                    """,
+                    (ZONE_A, SITE_A, ZONE_B, SITE_B),
+                )
+
+                cur.execute(
+                    """
+                    INSERT INTO minerops_site_agents (
+                        agent_id,
+                        site_id,
+                        agent_zone_id,
+                        site_name,
+                        last_payload
+                    )
+                    VALUES
+                        (
+                            %s,
+                            %s,
+                            %s,
+                            'Transport Isolation Site A',
+                            '{}'::jsonb
+                        ),
+                        (
+                            %s,
+                            %s,
+                            %s,
+                            'Transport Isolation Site B',
+                            '{}'::jsonb
+                        )
+                    ON CONFLICT (agent_id) DO UPDATE
+                    SET
+                        site_id = EXCLUDED.site_id,
+                        agent_zone_id = EXCLUDED.agent_zone_id,
+                        site_name = EXCLUDED.site_name,
+                        last_payload = EXCLUDED.last_payload
+                    """,
+                    (
+                        AGENT_A,
+                        SITE_A,
+                        ZONE_A,
+                        AGENT_B,
+                        SITE_B,
+                        ZONE_B,
+                    ),
+                )
+
+            connection.commit()
+
+        finally:
+            connection.close()
+
+    @classmethod
+    def tearDownClass(cls):
+        # Immutable identity/history rows intentionally are not deleted.
+        # The disposable Compose runner destroys the database volume.
+        pass
+
+    @staticmethod
+    def _delete_optional_rows(cur, table, predicate, params):
+        cur.execute(
+            "SELECT to_regclass(%s)",
+            (f"public.{table}",),
+        )
+
+        if cur.fetchone()[0] is not None:
+            cur.execute(
+                f"DELETE FROM {table} WHERE {predicate}",
+                params,
+            )
+
+    def setUp(self):
+        self.zone_service = AgentZoneService(
+            AgentZoneRepository(connect)
+        )
+
+        connection = connect()
+
+        try:
+            with connection.cursor() as cur:
+                cur.execute(
+                    """
+                    INSERT INTO miners (
+                        id,
+                        site_id,
+                        agent_zone_id,
+                        asset_tag,
+                        current_mac,
+                        current_ip,
+                        hostname,
+                        miner_sn,
+                        model,
+                        miner_type,
+                        api_version,
+                        firmware_version,
+                        platform,
+                        status,
+                        notes,
+                        api3_supported
+                    )
+                    VALUES
+                        (
+                            %s,
+                            %s,
+                            %s,
+                            'TRANSPORT-ZONE-A',
+                            %s,
+                            %s::inet,
+                            'zone-a-before',
+                            'ZONE-A-SERIAL',
+                            'Zone A Model',
+                            'Zone A Model',
+                            '1.0-a',
+                            'fw-a',
+                            'platform-a',
+                            'online',
+                            'Zone A baseline',
+                            false
+                        ),
+                        (
+                            %s,
+                            %s,
+                            %s,
+                            'TRANSPORT-ZONE-B',
+                            %s,
+                            %s::inet,
+                            'zone-b-before',
+                            'ZONE-B-SERIAL',
+                            'Zone B Model',
+                            'Zone B Model',
+                            '1.0-b',
+                            'fw-b',
+                            'platform-b',
+                            'online',
+                            'Zone B baseline',
+                            false
+                        )
+                    ON CONFLICT (id) DO NOTHING
+                    """,
+                    (
+                        MINER_A,
+                        SITE_A,
+                        ZONE_A,
+                        MAC_A,
+                        IP_A,
+                        MINER_B,
+                        SITE_B,
+                        ZONE_B,
+                        MAC_B,
+                        IP_B,
+                    ),
+                )
+
+            connection.commit()
+
+        finally:
+            connection.close()
+
+    def _table_exists(self, cur, table):
+        cur.execute(
+            "SELECT to_regclass(%s)",
+            (f"public.{table}",),
+        )
+        return cur.fetchone()[0] is not None
+
+    def _snapshot_rows(self, cur, table):
+        cur.execute(
+            f"""
+            SELECT to_jsonb(t)
+            FROM {table} AS t
+            WHERE miner_id IN (%s, %s)
+            ORDER BY to_jsonb(t)::text
+            """,
+            (MINER_A, MINER_B),
+        )
+
+        return [row[0] for row in cur.fetchall()]
+
+    def _count_optional_miner_rows(self, cur, table, miner_id):
+        if not self._table_exists(cur, table):
+            return 0
+
+        cur.execute(
+            f"""
+            SELECT COUNT(*)
+            FROM {table}
+            WHERE miner_id = %s
+            """,
+            (miner_id,),
+        )
+
+        return cur.fetchone()[0]
+
+    def _capture_inventory_state(self):
+        connection = connect()
+
+        try:
+            with connection.cursor() as cur:
+                cur.execute(
+                    """
+                    SELECT id::text, to_jsonb(m)
+                    FROM miners AS m
+                    WHERE id IN (%s, %s)
+                    ORDER BY id
+                    """,
+                    (MINER_A, MINER_B),
+                )
+
+                miners = {
+                    row[0]: row[1]
+                    for row in cur.fetchall()
+                }
+
+                ownerships = self._snapshot_rows(
+                    cur,
+                    "miner_mac_ownerships",
+                )
+
+                identities = self._snapshot_rows(
+                    cur,
+                    "miner_network_identities",
+                )
+
+                counts = {}
+
+                for table in (
+                    "miner_status_snapshots",
+                    "miner_api3_enrichment_snapshots",
+                    "miner_api3_hashboard_snapshots",
+                    "miner_pool_snapshots",
+                ):
+                    counts[(table, "A")] = (
+                        self._count_optional_miner_rows(
+                            cur,
+                            table,
+                            MINER_A,
+                        )
+                    )
+                    counts[(table, "B")] = (
+                        self._count_optional_miner_rows(
+                            cur,
+                            table,
+                            MINER_B,
+                        )
+                    )
+
+                return {
+                    "miners": miners,
+                    "mac_ownerships": ownerships,
+                    "network_identities": identities,
+                    "snapshot_counts": counts,
+                }
+
+        finally:
+            connection.close()
+
+    def _cross_zone_api3_probe_count(self):
+        connection = connect()
+
+        try:
+            with connection.cursor() as cur:
+                if not self._table_exists(
+                    cur,
+                    "miner_api3_enrichment_snapshots",
+                ):
+                    return 0
+
+                cur.execute(
+                    """
+                    SELECT COUNT(*)
+                    FROM miner_api3_enrichment_snapshots
+                    WHERE agent_id = %s
+                      AND (
+                            host(ip_address) = %s
+                            OR upper(mac_address) = upper(%s)
+                      )
+                    """,
+                    (AGENT_A, IP_B, MAC_B),
+                )
+
+                return cur.fetchone()[0]
+
+        finally:
+            connection.close()
+
+    def test_v2_cannot_address_other_zone_miner_directly(self):
+        before = self._capture_inventory_state()
+
+        request = json_request(
+            "/api/agent/miner-enrichment-v2",
+            {
+                "miner_id": str(MINER_B),
+                "mac_address": MAC_B,
+                "hostname": "zone-a-must-not-write-this",
+                "model": "cross-zone-v2-probe",
+            },
+        )
+
+        with self.assertRaises(HTTPException) as context:
+            asyncio.run(
+                minerops_agent_miner_enrichment_v2(
+                    request,
+                    AGENT_A,
+                    self.zone_service,
+                )
+            )
+
+        self.assertEqual(context.exception.status_code, 404)
+
+        after = self._capture_inventory_state()
+
+        self.assertEqual(after, before)
+
+    def test_v2_cross_zone_mac_merge_cannot_mutate_either_miner(self):
+        before = self._capture_inventory_state()
+
+        request = json_request(
+            "/api/agent/miner-enrichment-v2",
+            {
+                "miner_id": str(MINER_A),
+                "ip_address": IP_A,
+                "mac_address": MAC_B,
+                "hostname": "cross-zone-merge-probe",
+                "miner_sn": "MUST-NOT-CROSS-ZONES",
+                "model": "Cross Zone Merge Probe",
+            },
+        )
+
+        error = None
+
+        try:
+            asyncio.run(
+                minerops_agent_miner_enrichment_v2(
+                    request,
+                    AGENT_A,
+                    self.zone_service,
+                )
+            )
+        except Exception as exc:
+            error = exc
+
+        self.assertIsNotNone(
+            error,
+            "A Zone A miner must not successfully claim a Zone B MAC",
+        )
+
+        after = self._capture_inventory_state()
+
+        self.assertEqual(after, before)
+
+    def test_v3_cannot_match_or_mutate_other_zone_miner(self):
+        before = self._capture_inventory_state()
+
+        request = json_request(
+            "/api/agent/miner-enrichment-v3",
+            {
+                "miner_id": str(MINER_B),
+                "ip_address": IP_B,
+                "mac_address": MAC_B,
+                "hostname": "zone-a-v3-cross-zone-probe",
+                "miner_sn": "V3-MUST-NOT-MUTATE",
+                "model": "V3 Cross Zone Probe",
+                "api_version": "99.99",
+                "firmware_version": "cross-zone",
+                "platform": "cross-zone",
+                "raw_version": {"cross_zone": True},
+                "raw_miner_info": {"cross_zone": True},
+            },
+        )
+
+        result = asyncio.run(
+            minerops_agent_miner_enrichment_v3(
+                request,
+                AGENT_A,
+                self.zone_service,
+            )
+        )
+
+        self.assertFalse(result["matched"])
+
+        after = self._capture_inventory_state()
+
+        self.assertEqual(after, before)
+
+    def test_api3_ingestion_cannot_associate_or_mutate_other_zone_miner(self):
+        before = self._capture_inventory_state()
+
+        self.assertEqual(
+            self._cross_zone_api3_probe_count(),
+            0,
+        )
+
+        request = json_request(
+            "/api/agent/api3-enrichment",
+            {
+                "agent_id": AGENT_B,
+                "site_name": "spoofed-zone-b",
+                "items": [
+                    {
+                        "ip": IP_B,
+                        "mac": MAC_B,
+                        "api3_supported": True,
+                        "api3_error": None,
+                        "device_info": {
+                            "msg": {
+                                "network": {
+                                    "ip": IP_B,
+                                    "mac": MAC_B,
+                                },
+                                "miner": {
+                                    "type": "Cross Zone API3 Probe",
+                                    "miner-sn": "API3-MUST-NOT-MUTATE",
+                                },
+                                "system": {
+                                    "api": "99.99",
+                                    "apiswitch": "on",
+                                    "fwversion": "cross-zone-fw",
+                                    "platform": "cross-zone-platform",
+                                },
+                                "power": {
+                                    "sn": "cross-zone-power",
+                                    "model": "cross-zone-psu",
+                                },
+                            }
+                        },
+                        "miner_setting": {
+                            "msg": {
+                                "power-mode": "high",
+                            }
+                        },
+                        "miner_status": {
+                            "msg": {
+                                "summary": {
+                                    "hash-average": 999,
+                                    "power-realtime": 9999,
+                                    "power-rate": 99,
+                                    "chip-temp-avg": 99,
+                                    "chip-temp-max": 100,
+                                },
+                                "pools": [
+                                    {
+                                        "id": 0,
+                                        "status": "Alive",
+                                        "account": "cross-zone-worker",
+                                        "url": "stratum+tcp://invalid.example:3333",
+                                    }
+                                ],
+                                "edevs": [
+                                    {
+                                        "slot": 0,
+                                        "hash-average": 999,
+                                        "factory-hash": 999,
+                                        "freq": 999,
+                                        "effective-chips": 999,
+                                    }
+                                ],
+                            }
+                        },
+                        "fan_setting": {
+                            "msg": {
+                                "mode": "cross-zone",
+                            }
+                        },
+                        "custom_data": {
+                            "msg": {
+                                "CustomerSn": "CROSS-ZONE-CUSTOMER",
+                            }
+                        },
+                    }
+                ],
+            },
+        )
+
+        asyncio.run(
+            minerops_agent_api3_enrichment(
+                request,
+                AGENT_A,
+                self.zone_service,
+            )
+        )
+
+        after = self._capture_inventory_state()
+
+        self.assertEqual(after, before)
+
+        self.assertEqual(
+            self._cross_zone_api3_probe_count(),
+            0,
+            (
+                "Agent A must not persist API3 enrichment associated "
+                "with Zone B identity data"
+            ),
+        )
+
+
+if __name__ == "__main__":
+    unittest.main()

backend/tests/test_agent_windows_package.py

@@ -0,0 +1,279 @@
+"""Tests for downloadable Windows Agent enrollment packages."""
+
+import io
+import json
+import tempfile
+import unittest
+import zipfile
+from pathlib import Path
+
+from fastapi import FastAPI
+from fastapi.testclient import TestClient
+
+from app.agent_enrollment.router import router
+from app.agent_packages.windows import (
+    AgentWindowsPackageError,
+    AgentWindowsPackageSourceError,
+    WINDOWS_PACKAGE_FILES,
+    WINDOWS_PACKAGE_ROOT,
+    build_windows_agent_package,
+    normalize_hub_url,
+)
+from app.identity import get_current_user, required_api_permission
+
+
+TOKEN = "t" * 43
+
+
+class WindowsPackageBuilderTests(unittest.TestCase):
+    def source_tree(self, root: Path):
+        for name in WINDOWS_PACKAGE_FILES:
+            (root / name).write_text(f"source:{name}\n")
+
+    def test_package_contains_only_generic_source_plus_bootstrap_material(self):
+        with tempfile.TemporaryDirectory() as temporary:
+            root = Path(temporary)
+            self.source_tree(root)
+
+            package = build_windows_agent_package(
+                enrollment_token=TOKEN,
+                hub_url="https://minerops.example.test",
+                source_root=root,
+            )
+
+            with zipfile.ZipFile(io.BytesIO(package)) as archive:
+                names = set(archive.namelist())
+
+                expected = {
+                    f"{WINDOWS_PACKAGE_ROOT}/{name}"
+                    for name in WINDOWS_PACKAGE_FILES
+                }
+
+                expected.update(
+                    {
+                        f"{WINDOWS_PACKAGE_ROOT}/enrollment.json",
+                        f"{WINDOWS_PACKAGE_ROOT}/INSTALL.txt",
+                    }
+                )
+
+                self.assertEqual(names, expected)
+
+                enrollment = json.loads(
+                    archive.read(
+                        f"{WINDOWS_PACKAGE_ROOT}/enrollment.json"
+                    )
+                )
+
+                self.assertEqual(enrollment["token"], TOKEN)
+                self.assertEqual(enrollment["workflow"], "new_agent")
+                self.assertEqual(
+                    enrollment["hub_url"],
+                    "https://minerops.example.test",
+                )
+
+                serialized = json.dumps(enrollment)
+
+                self.assertNotIn("agent_secret", serialized)
+                self.assertNotIn("api3_password", serialized)
+                self.assertNotIn("api3_account", serialized)
+                self.assertNotIn("agent-config.json", "\n".join(names))
+
+    def test_existing_agent_transition_package_is_generic_and_distinct(self):
+        with tempfile.TemporaryDirectory() as temporary:
+            root = Path(temporary)
+            self.source_tree(root)
+            package = build_windows_agent_package(
+                enrollment_token=TOKEN,
+                hub_url="https://minerops.example.test",
+                workflow="existing_agent_credential_transition",
+                source_root=root,
+            )
+
+            with zipfile.ZipFile(io.BytesIO(package)) as archive:
+                enrollment = json.loads(
+                    archive.read(
+                        f"{WINDOWS_PACKAGE_ROOT}/enrollment.json"
+                    )
+                )
+                instructions = archive.read(
+                    f"{WINDOWS_PACKAGE_ROOT}/INSTALL.txt"
+                ).decode("utf-8")
+                names = set(archive.namelist())
+
+            self.assertEqual(
+                enrollment,
+                {
+                    "hub_url": "https://minerops.example.test",
+                    "token": TOKEN,
+                    "workflow": "existing_agent_credential_transition",
+                },
+            )
+            self.assertIn("Upgrade-MinerOpsAgentCredential.ps1", instructions)
+            self.assertIn(
+                f"{WINDOWS_PACKAGE_ROOT}/Upgrade-MinerOpsAgentCredential.ps1",
+                names,
+            )
+            serialized = json.dumps(enrollment)
+            for forbidden in (
+                "plexus-windows-agent",
+                "site_id",
+                "agent_zone_id",
+                "agent_secret",
+            ):
+                self.assertNotIn(forbidden, serialized)
+
+    def test_missing_canonical_source_fails_closed(self):
+        with tempfile.TemporaryDirectory() as temporary:
+            root = Path(temporary)
+            self.source_tree(root)
+
+            (root / WINDOWS_PACKAGE_FILES[0]).unlink()
+
+            with self.assertRaises(AgentWindowsPackageSourceError):
+                build_windows_agent_package(
+                    enrollment_token=TOKEN,
+                    hub_url="https://minerops.example.test",
+                    source_root=root,
+                )
+
+    def test_hub_url_is_origin_only(self):
+        self.assertEqual(
+            normalize_hub_url("https://minerops.example.test/"),
+            "https://minerops.example.test",
+        )
+
+        for invalid in (
+            "ftp://minerops.example.test",
+            "https://user:pass@minerops.example.test",
+            "https://minerops.example.test/path",
+            "https://minerops.example.test/?token=x",
+        ):
+            with self.subTest(value=invalid):
+                with self.assertRaises(AgentWindowsPackageError):
+                    normalize_hub_url(invalid)
+
+
+class WindowsPackageRouteTests(unittest.TestCase):
+    def setUp(self):
+        self.app = FastAPI()
+        self.app.include_router(router)
+        self.client = TestClient(self.app)
+
+    def tearDown(self):
+        self.client.close()
+
+    def authenticate(self, permissions):
+        self.app.dependency_overrides[get_current_user] = lambda: {
+            "id": "00000000-0000-4000-8000-000000009100",
+            "username": "package-test",
+            "display_name": "Package Test",
+            "role": "Test",
+            "permissions": tuple(permissions),
+        }
+
+    def test_permission_mapping_is_manage_only(self):
+        self.assertEqual(
+            required_api_permission(
+                "POST",
+                "/api/agent-enrollments/windows-package",
+            ),
+            "agents.manage",
+        )
+        self.assertEqual(
+            required_api_permission(
+                "POST",
+                "/api/agent-credential-transitions/windows-package",
+            ),
+            "agents.manage",
+        )
+
+    def test_view_only_user_cannot_download_package(self):
+        self.authenticate(("agents.view",))
+
+        response = self.client.post(
+            "/api/agent-enrollments/windows-package",
+            headers={"Origin": "http://testserver"},
+            json={
+                "token": TOKEN,
+            },
+        )
+
+        self.assertEqual(response.status_code, 403)
+
+    def test_manager_download_is_same_origin_and_not_cacheable(self):
+        self.authenticate(("agents.view", "agents.manage"))
+
+        response = self.client.post(
+            "/api/agent-enrollments/windows-package",
+            headers={"Origin": "http://testserver"},
+            json={
+                "token": TOKEN,
+            },
+        )
+
+        self.assertEqual(response.status_code, 200)
+        self.assertEqual(
+            response.headers["content-type"],
+            "application/zip",
+        )
+        self.assertEqual(
+            response.headers["cache-control"],
+            "no-store",
+        )
+        self.assertIn(
+            'filename="MinerOpsAgent-Windows.zip"',
+            response.headers["content-disposition"],
+        )
+
+        with zipfile.ZipFile(io.BytesIO(response.content)) as archive:
+            enrollment = json.loads(
+                archive.read(
+                    f"{WINDOWS_PACKAGE_ROOT}/enrollment.json"
+                )
+            )
+            self.assertEqual(enrollment["token"], TOKEN)
+            self.assertEqual(enrollment["workflow"], "new_agent")
+
+    def test_manager_downloads_distinct_existing_agent_upgrade_package(self):
+        self.authenticate(("agents.view", "agents.manage"))
+
+        response = self.client.post(
+            "/api/agent-credential-transitions/windows-package",
+            headers={"Origin": "http://testserver"},
+            json={"token": TOKEN},
+        )
+
+        self.assertEqual(response.status_code, 200)
+        self.assertEqual(response.headers["cache-control"], "no-store")
+        self.assertIn(
+            "MinerOpsAgent-Credential-Upgrade-Windows.zip",
+            response.headers["content-disposition"],
+        )
+        with zipfile.ZipFile(io.BytesIO(response.content)) as archive:
+            enrollment = json.loads(
+                archive.read(f"{WINDOWS_PACKAGE_ROOT}/enrollment.json")
+            )
+            instructions = archive.read(
+                f"{WINDOWS_PACKAGE_ROOT}/INSTALL.txt"
+            ).decode("utf-8")
+        self.assertEqual(
+            enrollment["workflow"],
+            "existing_agent_credential_transition",
+        )
+        self.assertIn("Upgrade-MinerOpsAgentCredential.ps1", instructions)
+
+    def test_package_requires_browser_origin(self):
+        self.authenticate(("agents.view", "agents.manage"))
+
+        response = self.client.post(
+            "/api/agent-enrollments/windows-package",
+            json={
+                "token": TOKEN,
+            },
+        )
+
+        self.assertEqual(response.status_code, 400)
+
+
+if __name__ == "__main__":
+    unittest.main()

backend/tests/test_agent_zones.py

@@ -0,0 +1,319 @@
+"""Focused model, service, router, and architecture tests for Agent Zones v1."""
+
+import unittest
+from pathlib import Path
+from uuid import UUID, uuid4
+
+from fastapi import FastAPI
+from fastapi.testclient import TestClient
+
+from app.agent_commands.dependencies import require_agent_identity
+from app.agent_zones.dependencies import get_agent_zone_service
+from app.agent_zones.exceptions import AgentZoneValidationError
+from app.agent_zones.models import AgentCheckinRequest, AgentZoneCreateRequest
+from app.agent_zones.router import router
+from app.agent_zones.service import AgentZoneService
+from app.identity import get_current_user, required_api_permission
+
+
+SITE_A = UUID("00000000-0000-4000-8000-000000001601")
+SITE_B = UUID("00000000-0000-4000-8000-000000001602")
+ZONE_A = UUID("00000000-0000-4000-8000-000000001611")
+ZONE_B = UUID("00000000-0000-4000-8000-000000001612")
+MINER_A = UUID("00000000-0000-4000-8000-000000001621")
+APP_ROOT = Path(__file__).parents[1] / "app"
+
+
+def zone(zone_id=ZONE_A, site_id=SITE_A, *, enabled=True, name="Main Room"):
+    return {
+        "id": zone_id,
+        "site_id": site_id,
+        "name": name,
+        "description": None,
+        "is_enabled": enabled,
+        "assigned_agent_id": None,
+        "networks": [],
+    }
+
+
+class FakeRepository:
+    def __init__(self):
+        self.zones = {ZONE_A: zone()}
+        self.agent = None
+        self.saved = []
+        self.assign_result = {MINER_A: "assigned"}
+
+    def get_agent(self, agent_id):
+        return self.agent if self.agent and self.agent["agent_id"] == agent_id else None
+
+    def get_zone(self, zone_id):
+        return self.zones.get(zone_id)
+
+    def list_usable_zones(self, site_id):
+        return [
+            value for value in self.zones.values()
+            if value["site_id"] == site_id and value["is_enabled"]
+        ]
+
+    def list_zones(self, site_id=None):
+        return [
+            value for value in self.zones.values()
+            if site_id is None or value["site_id"] == site_id
+        ]
+
+    def create_zone(self, *, site_id, name, description, networks):
+        created_id = uuid4()
+        self.zones[created_id] = {
+            **zone(created_id, site_id, name=name),
+            "description": description,
+            "networks": [
+                {"id": uuid4(), "network": network} for network in networks
+            ],
+        }
+        return created_id
+
+    def save_checkin(self, **kwargs):
+        self.saved.append(kwargs)
+        self.agent = {
+            "agent_id": kwargs["agent_id"],
+            "site_id": kwargs["site_id"],
+            "agent_zone_id": kwargs["agent_zone_id"],
+            "site_name": kwargs["site_name"],
+        }
+
+    def get_agent_assignment(self, agent_id):
+        if not self.agent or self.agent["agent_id"] != agent_id:
+            return None
+        zone_row = self.zones.get(self.agent.get("agent_zone_id"))
+        return {
+            **self.agent,
+            "zone_enabled": zone_row["is_enabled"] if zone_row else None,
+        }
+
+    def get_agent_configuration(self, agent_id):
+        assignment = self.get_agent_assignment(agent_id)
+        if not assignment:
+            return None
+        zone_row = self.zones.get(assignment.get("agent_zone_id"))
+        return {
+            "agent_id": agent_id,
+            "site_id": assignment.get("site_id"),
+            "agent_zone_id": assignment.get("agent_zone_id"),
+            "site_name": assignment.get("site_name"),
+            "agent_zone_name": zone_row["name"] if zone_row else None,
+            "agent_zone_enabled": zone_row["is_enabled"] if zone_row else None,
+            "networks": [
+                item["network"] for item in (zone_row or {}).get("networks", [])
+            ],
+        }
+
+    def assign_miners_to_zone(self, miner_ids, agent_zone_id):
+        self.assigned = (list(miner_ids), agent_zone_id)
+        return {miner_id: self.assign_result.get(miner_id, "miner_not_found")
+                for miner_id in miner_ids}
+
+
+class AgentZoneModelTests(unittest.TestCase):
+    def test_names_and_networks_are_normalized(self):
+        request = AgentZoneCreateRequest(
+            site_id=SITE_A,
+            name="  Main Room  ",
+            description="  Local VLAN  ",
+            networks=["10.30.0.0/24", "2001:db8::/64"],
+        )
+        self.assertEqual(request.name, "Main Room")
+        self.assertEqual(request.description, "Local VLAN")
+        self.assertEqual(request.networks, ["10.30.0.0/24", "2001:db8::/64"])
+
+    def test_invalid_host_network_duplicate_and_extra_fields_are_rejected(self):
+        for networks in (["10.30.0.7/24"], ["10.30.0.0/24", "10.30.0.0/24"]):
+            with self.subTest(networks=networks), self.assertRaises(Exception):
+                AgentZoneCreateRequest(site_id=SITE_A, name="Zone", networks=networks)
+        with self.assertRaises(Exception):
+            AgentZoneCreateRequest(site_id=SITE_A, name="Zone", unknown=True)
+
+
+class AgentZoneServiceTests(unittest.TestCase):
+    def setUp(self):
+        self.repository = FakeRepository()
+        self.service = AgentZoneService(self.repository)
+
+    def checkin(self, **kwargs):
+        return self.service.checkin(
+            "agent-a",
+            AgentCheckinRequest(agent_id="agent-a", site_name="North", **kwargs),
+        )
+
+    def test_explicit_first_assignment_and_same_assignment_are_allowed(self):
+        first = self.checkin(site_id=SITE_A, agent_zone_id=ZONE_A)
+        second = self.checkin(site_id=SITE_A, agent_zone_id=ZONE_A)
+        self.assertTrue(first.routing_available)
+        self.assertEqual(second.agent_zone_id, ZONE_A)
+
+    def test_explicit_zone_site_mismatch_and_identity_spoof_are_rejected(self):
+        with self.assertRaisesRegex(AgentZoneValidationError, "does not belong"):
+            self.checkin(site_id=SITE_B, agent_zone_id=ZONE_A)
+        with self.assertRaisesRegex(AgentZoneValidationError, "authenticated"):
+            self.service.checkin(
+                "agent-a", AgentCheckinRequest(agent_id="agent-b", site_id=SITE_A)
+            )
+
+    def test_established_agent_cannot_change_zone_within_site(self):
+        self.checkin(site_id=SITE_A, agent_zone_id=ZONE_A)
+        self.repository.zones[ZONE_B] = zone(ZONE_B, SITE_A, name="Room 2")
+        with self.assertRaisesRegex(AgentZoneValidationError, "different Agent Zone"):
+            self.checkin(site_id=SITE_A, agent_zone_id=ZONE_B)
+        self.assertEqual(self.repository.agent["agent_zone_id"], ZONE_A)
+
+    def test_established_agent_site_conflict_precedes_zone_conflict(self):
+        self.checkin(site_id=SITE_A, agent_zone_id=ZONE_A)
+        self.repository.zones[ZONE_B] = zone(ZONE_B, SITE_B, name="Remote")
+        with self.assertRaisesRegex(AgentZoneValidationError, "cannot change Sites"):
+            self.checkin(site_id=SITE_B, agent_zone_id=ZONE_B)
+        self.assertEqual(self.repository.agent["agent_zone_id"], ZONE_A)
+
+    def test_omitted_zone_preserves_established_assignment_and_site(self):
+        self.checkin(site_id=SITE_A, agent_zone_id=ZONE_A)
+        result = self.service.checkin(
+            "agent-a", AgentCheckinRequest(agent_id="agent-a", site_name="North")
+        )
+        self.assertEqual(result.site_id, SITE_A)
+        self.assertEqual(result.agent_zone_id, ZONE_A)
+
+    def test_transitional_resolution_requires_exactly_one_enabled_zone(self):
+        single = self.checkin(site_id=SITE_A)
+        self.assertEqual(single.agent_zone_id, ZONE_A)
+        self.repository.agent = None
+        self.repository.zones = {}
+        zero = self.checkin(site_id=SITE_A)
+        self.assertEqual(zero.routing_reason, "agent_zone_unavailable")
+        self.repository.agent = None
+        self.repository.zones = {
+            ZONE_A: zone(),
+            ZONE_B: zone(ZONE_B, SITE_A, name="Room 2"),
+        }
+        many = self.checkin(site_id=SITE_A)
+        self.assertEqual(many.routing_reason, "agent_zone_ambiguous")
+        self.assertIsNone(many.agent_zone_id)
+
+    def test_disabled_zone_is_not_selected_and_existing_assignment_is_factual(self):
+        self.repository.zones[ZONE_A]["is_enabled"] = False
+        unassigned = self.checkin(site_id=SITE_A)
+        self.assertEqual(unassigned.routing_reason, "agent_zone_unavailable")
+        self.repository.agent = {
+            "agent_id": "agent-a", "site_id": SITE_A,
+            "agent_zone_id": ZONE_A, "site_name": "North",
+        }
+        existing = self.service.checkin(
+            "agent-a", AgentCheckinRequest(agent_id="agent-a")
+        )
+        self.assertEqual(existing.routing_reason, "agent_zone_disabled")
+        self.assertEqual(existing.agent_zone_id, ZONE_A)
+
+    def test_payload_is_sanitized_before_persistence(self):
+        request = AgentCheckinRequest.model_validate({
+            "agent_id": "agent-a", "site_id": str(SITE_A),
+            "api3_password": "secret", "nested": {"access_token": "secret"},
+            "control_available": True,
+        })
+        self.service.checkin("agent-a", request)
+        payload = self.repository.saved[-1]["payload"]
+        self.assertNotIn("password", str(payload).lower())
+        self.assertNotIn("token", str(payload).lower())
+        self.assertTrue(payload["control_available"])
+
+    def test_miner_zone_assignment_surfaces_conflicts_without_rehoming(self):
+        self.checkin(site_id=SITE_A, agent_zone_id=ZONE_A)
+        self.repository.assign_result[MINER_A] = "agent_zone_conflict"
+        result = self.service.associate_miners_from_agent("agent-a", [MINER_A])
+        self.assertEqual(result.outcomes[MINER_A], "agent_zone_conflict")
+        self.assertEqual(self.repository.assigned, ([MINER_A], ZONE_A))
+
+    def test_routing_context_rejects_stale_recorded_zone(self):
+        self.checkin(site_id=SITE_A, agent_zone_id=ZONE_A)
+        result = self.service.routing_context("agent-a", ZONE_B)
+        self.assertEqual(result.routing_reason, "agent_zone_conflict")
+        self.assertIsNone(result.site_id)
+
+    def test_configuration_uses_only_authenticated_agent_zone_networks(self):
+        self.repository.zones[ZONE_A]["networks"] = [
+            {"id": uuid4(), "network": "10.30.0.0/24"}
+        ]
+        self.repository.zones[ZONE_B] = zone(ZONE_B, SITE_B, name="Remote")
+        self.repository.zones[ZONE_B]["networks"] = [
+            {"id": uuid4(), "network": "10.80.0.0/24"}
+        ]
+        self.checkin(site_id=SITE_A, agent_zone_id=ZONE_A)
+
+        configuration = self.service.configuration("agent-a")
+
+        self.assertEqual(configuration["agent_zone_id"], ZONE_A)
+        self.assertEqual(
+            [item["cidr"] for item in configuration["ip_ranges"]],
+            ["10.30.0.0/24"],
+        )
+        self.assertNotIn("10.80.0.0/24", str(configuration))
+
+
+class AgentZoneRouterTests(unittest.TestCase):
+    def setUp(self):
+        self.repository = FakeRepository()
+        self.service = AgentZoneService(self.repository)
+        self.app = FastAPI()
+        self.app.include_router(router)
+        self.app.dependency_overrides[get_agent_zone_service] = lambda: self.service
+        self.app.dependency_overrides[require_agent_identity] = lambda: "agent-a"
+        self.client = TestClient(self.app)
+
+    def tearDown(self):
+        self.client.close()
+
+    def authenticate(self, permissions):
+        self.app.dependency_overrides[get_current_user] = lambda: {
+            "id": str(uuid4()), "username": "operator", "role": "Custom",
+            "permissions": list(permissions),
+        }
+
+    def test_list_and_create_use_existing_agent_permissions(self):
+        self.assertEqual(self.client.get("/api/agent-zones").status_code, 401)
+        self.authenticate(("agents.view",))
+        self.assertEqual(self.client.get("/api/agent-zones").status_code, 200)
+        self.assertEqual(
+            self.client.post(
+                "/api/agent-zones", json={"site_id": str(SITE_A), "name": "Room 2"}
+            ).status_code,
+            403,
+        )
+        self.authenticate(("agents.manage",))
+        response = self.client.post(
+            "/api/agent-zones",
+            json={"site_id": str(SITE_A), "name": "Room 2", "networks": ["10.40.0.0/24"]},
+        )
+        self.assertEqual(response.status_code, 201)
+        self.assertEqual(response.json()["data"]["name"], "Room 2")
+
+    def test_checkin_uses_authenticated_agent_identity(self):
+        response = self.client.post(
+            "/api/agent/checkin",
+            json={"agent_id": "agent-a", "site_id": str(SITE_A),
+                  "agent_zone_id": str(ZONE_A)},
+        )
+        self.assertEqual(response.status_code, 200)
+        self.assertEqual(response.json()["agent_id"], "agent-a")
+        self.assertNotIn("secret", response.text.lower())
+
+    def test_permission_and_architecture_audits(self):
+        self.assertEqual(required_api_permission("GET", "/api/agent-zones"), "agents.view")
+        self.assertEqual(required_api_permission("POST", "/api/agent-zones"), "agents.manage")
+        router_source = (APP_ROOT / "agent_zones" / "router.py").read_text()
+        service_source = (APP_ROOT / "agent_zones" / "service.py").read_text()
+        repository_source = (APP_ROOT / "agent_zones" / "repository.py").read_text()
+        self.assertNotIn("psycopg", router_source)
+        self.assertNotIn("SELECT ", router_source)
+        self.assertNotIn("fastapi", service_source.lower())
+        self.assertNotIn("fastapi", repository_source.lower())
+        self.assertNotIn('@app.post("/api/agent/checkin")', (APP_ROOT / "main.py").read_text())
+
+
+if __name__ == "__main__":
+    unittest.main()

backend/tests/test_agent_zones_postgres.py

@@ -0,0 +1,244 @@
+"""Real PostgreSQL integrity and routing tests for Agent Zones v1."""
+
+import unittest
+from uuid import UUID
+
+import psycopg
+from psycopg.errors import ForeignKeyViolation, UniqueViolation
+
+from app.agent_zones.repository import AgentZoneRepository
+from app.config import settings
+from app.miner_control.repository import MinerControlRepository
+from app.miner_control.service import MinerControlService
+
+
+SITE_A = UUID("00000000-0000-4000-8000-000000001630")
+SITE_B = UUID("00000000-0000-4000-8000-000000001631")
+ZONE_A = UUID("00000000-0000-4000-8000-000000001632")
+ZONE_B = UUID("00000000-0000-4000-8000-000000001633")
+ZONE_C = UUID("00000000-0000-4000-8000-000000001636")
+MINER_UNASSIGNED = UUID("00000000-0000-4000-8000-000000001634")
+MINER_OTHER = UUID("00000000-0000-4000-8000-000000001635")
+AGENT_A = "agent-zone-postgres-a"
+
+
+def connect():
+    return psycopg.connect(
+        host=settings.postgres_host,
+        port=settings.postgres_port,
+        dbname=settings.postgres_db,
+        user=settings.postgres_user,
+        password=settings.postgres_password,
+        connect_timeout=5,
+    )
+
+
+class AgentZonePostgresTests(unittest.TestCase):
+    @classmethod
+    def setUpClass(cls):
+        connection = connect()
+        try:
+            with connection.cursor() as cur:
+                cur.execute(
+                    "INSERT INTO sites (id, name) VALUES (%s, 'Zone Test A'), "
+                    "(%s, 'Zone Test B') ON CONFLICT (id) DO NOTHING",
+                    (SITE_A, SITE_B),
+                )
+                cur.execute(
+                    "INSERT INTO agent_zones (id, site_id, name) VALUES "
+                    "(%s, %s, 'Main Room'), (%s, %s, 'Remote Room'), "
+                    "(%s, %s, 'Unstaffed Zone') "
+                    "ON CONFLICT (id) DO UPDATE SET is_enabled = true",
+                    (ZONE_A, SITE_A, ZONE_B, SITE_B, ZONE_C, SITE_A),
+                )
+                cur.execute(
+                    "INSERT INTO miners (id, site_id, asset_tag, current_ip, status, "
+                    "api3_supported, first_seen_at, last_seen_at) VALUES "
+                    "(%s, %s, 'ZONE-UNASSIGNED', '192.0.2.31', 'online', true, NULL, NULL), "
+                    "(%s, %s, 'ZONE-OTHER', '192.0.2.32', 'online', true, NULL, NULL) "
+                    "ON CONFLICT (id) DO UPDATE SET agent_zone_id = NULL",
+                    (MINER_UNASSIGNED, SITE_A, MINER_OTHER, SITE_B),
+                )
+                cur.execute(
+                    "UPDATE miners SET agent_zone_id = %s WHERE id = %s",
+                    (ZONE_B, MINER_OTHER),
+                )
+                cur.execute(
+                    "INSERT INTO minerops_site_agents ("
+                    "agent_id, site_id, agent_zone_id, site_name, last_payload) "
+                    "VALUES (%s, %s, %s, 'Zone Test A', '{\"control_available\":true}') "
+                    "ON CONFLICT (agent_id) DO UPDATE SET site_id = EXCLUDED.site_id, "
+                    "agent_zone_id = EXCLUDED.agent_zone_id, last_payload = EXCLUDED.last_payload",
+                    (AGENT_A, SITE_A, ZONE_A),
+                )
+            connection.commit()
+        finally:
+            connection.close()
+
+    @classmethod
+    def tearDownClass(cls):
+        connection = connect()
+        try:
+            with connection.cursor() as cur:
+                cur.execute("DELETE FROM minerops_site_agents WHERE agent_id LIKE 'agent-zone-postgres-%'")
+                cur.execute("DELETE FROM miners WHERE id IN (%s, %s)", (MINER_UNASSIGNED, MINER_OTHER))
+                cur.execute("DELETE FROM agent_zone_network_ranges WHERE agent_zone_id IN (%s, %s, %s)", (ZONE_A, ZONE_B, ZONE_C))
+                cur.execute("DELETE FROM agent_zones WHERE id IN (%s, %s, %s)", (ZONE_A, ZONE_B, ZONE_C))
+                cur.execute("DELETE FROM sites WHERE id IN (%s, %s)", (SITE_A, SITE_B))
+            connection.commit()
+        finally:
+            connection.close()
+
+    def setUp(self):
+        connection = connect()
+        try:
+            with connection.cursor() as cur:
+                cur.execute(
+                    "UPDATE agent_zones SET is_enabled = true "
+                    "WHERE id IN (%s, %s, %s)",
+                    (ZONE_A, ZONE_B, ZONE_C),
+                )
+                cur.execute(
+                    "UPDATE miners SET agent_zone_id = NULL WHERE id = %s",
+                    (MINER_UNASSIGNED,),
+                )
+                cur.execute(
+                    "UPDATE miners SET site_id = %s, agent_zone_id = %s WHERE id = %s",
+                    (SITE_B, ZONE_B, MINER_OTHER),
+                )
+                cur.execute(
+                    "UPDATE minerops_site_agents SET site_id = %s, agent_zone_id = %s "
+                    "WHERE agent_id = %s",
+                    (SITE_A, ZONE_A, AGENT_A),
+                )
+            connection.commit()
+        finally:
+            connection.close()
+
+    def test_repository_lists_multiple_canonical_networks(self):
+        connection = connect()
+        try:
+            with connection.cursor() as cur:
+                cur.execute(
+                    "INSERT INTO agent_zone_network_ranges (agent_zone_id, network) "
+                    "VALUES (%s, '10.30.0.0/24'), (%s, '10.31.0.0/24') "
+                    "ON CONFLICT DO NOTHING",
+                    (ZONE_A, ZONE_A),
+                )
+            connection.commit()
+        finally:
+            connection.close()
+        listed = AgentZoneRepository(connect).list_zones(SITE_A)
+        self.assertEqual([item["network"] for item in listed[0]["networks"]],
+                         ["10.30.0.0/24", "10.31.0.0/24"])
+
+    def test_active_names_are_case_insensitively_unique_per_site(self):
+        connection = connect()
+        try:
+            with self.assertRaises(UniqueViolation), connection.cursor() as cur:
+                cur.execute(
+                    "INSERT INTO agent_zones (site_id, name) VALUES (%s, 'main room')",
+                    (SITE_A,),
+                )
+        finally:
+            connection.rollback()
+            connection.close()
+
+    def test_one_agent_per_zone_but_multiple_zones_per_site(self):
+        connection = connect()
+        try:
+            with self.assertRaises(UniqueViolation), connection.cursor() as cur:
+                cur.execute(
+                    "INSERT INTO minerops_site_agents "
+                    "(agent_id, site_id, agent_zone_id, site_name) "
+                    "VALUES ('agent-zone-postgres-duplicate', %s, %s, 'Duplicate')",
+                    (SITE_A, ZONE_A),
+                )
+        finally:
+            connection.rollback()
+            connection.close()
+
+    def test_composite_foreign_keys_reject_cross_site_assignment(self):
+        connection = connect()
+        try:
+            with self.assertRaises(ForeignKeyViolation), connection.cursor() as cur:
+                cur.execute(
+                    "UPDATE miners SET agent_zone_id = %s WHERE id = %s",
+                    (ZONE_A, MINER_OTHER),
+                )
+        finally:
+            connection.rollback()
+            connection.close()
+
+    def test_unassigned_miner_inherits_zone_and_existing_other_zone_wins(self):
+        repository = AgentZoneRepository(connect)
+        outcomes = repository.assign_miners_to_zone(
+            [MINER_UNASSIGNED, MINER_OTHER], ZONE_A
+        )
+        self.assertEqual(outcomes[MINER_UNASSIGNED], "assigned")
+        self.assertEqual(outcomes[MINER_OTHER], "agent_zone_conflict")
+        connection = connect()
+        try:
+            with connection.cursor() as cur:
+                cur.execute(
+                    "SELECT id, agent_zone_id FROM miners WHERE id IN (%s, %s)",
+                    (MINER_UNASSIGNED, MINER_OTHER),
+                )
+                assignments = dict(cur.fetchall())
+        finally:
+            connection.close()
+        self.assertEqual(assignments[MINER_UNASSIGNED], ZONE_A)
+        self.assertEqual(assignments[MINER_OTHER], ZONE_B)
+
+    def test_disabled_zone_blocks_control_without_site_fallback(self):
+        connection = connect()
+        try:
+            with connection.cursor() as cur:
+                cur.execute(
+                    "UPDATE miners SET agent_zone_id = %s WHERE id = %s",
+                    (ZONE_A, MINER_UNASSIGNED),
+                )
+                cur.execute("UPDATE agent_zones SET is_enabled = false WHERE id = %s", (ZONE_A,))
+            connection.commit()
+        finally:
+            connection.close()
+        try:
+            projection = MinerControlService(MinerControlRepository(connect)).get_controls(
+                MINER_UNASSIGNED
+            )
+            self.assertEqual(projection.service_control.reason, "agent_zone_disabled")
+        finally:
+            connection = connect()
+            try:
+                with connection.cursor() as cur:
+                    cur.execute("UPDATE agent_zones SET is_enabled = true WHERE id = %s", (ZONE_A,))
+                connection.commit()
+            finally:
+                connection.close()
+
+
+    def test_enabled_zone_without_agent_does_not_fall_back_within_site(self):
+        connection = connect()
+        try:
+            with connection.cursor() as cur:
+                cur.execute(
+                    "UPDATE miners SET agent_zone_id = %s WHERE id = %s",
+                    (ZONE_C, MINER_UNASSIGNED),
+                )
+            connection.commit()
+        finally:
+            connection.close()
+        projection = MinerControlService(MinerControlRepository(connect)).get_controls(
+            MINER_UNASSIGNED
+        )
+        self.assertEqual(projection.service_control.reason, "agent_unavailable")
+
+    def test_null_zone_does_not_fall_back_to_site_agent(self):
+        projection = MinerControlService(MinerControlRepository(connect)).get_controls(
+            MINER_UNASSIGNED
+        )
+        self.assertEqual(projection.service_control.reason, "agent_zone_unassigned")
+
+
+if __name__ == "__main__":
+    unittest.main()