security: contain physical miner commands in Stage A

Disable physical control through legacy HTTP/M30 producers, typed admission,
queue dispatch and upgraded Windows executors. Restrict diagnostic transports
to exact read-only operations, with ordinal PowerShell validation before sockets.

Retire unsupported pending/claimed work with atomic, idempotent security audits.
Preserve prior delivery evidence and report unknown outcomes after a prior claim,
including explicitly repaired pending rows. Include containment, cancellation,
concurrency and malformed-payload regressions and the old-Agent cutover runbook.

Validation: independent final application-security revalidation PASS. Two unchanged
baseline source-assertion failures are documented as exceptions. Production release
still requires native Windows validation and verified fencing/stop/drain/upgrade;
server cancellation alone cannot revoke a cached command held by an old Agent.

.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*

README.md

@@ -1,198 +1,322 @@
 <p align="center">
-  <img src="branding/wordmark.svg" alt="MinerOps" width="320">
+  <img src="branding/logo.png" alt="MinerOps Logo" width="180">
 </p>
 
 <h1 align="center">MinerOps</h1>
 
 <p align="center">
   <strong>The self-hosted operating system for cryptocurrency mining operations.</strong>
-  <br>
-  Know every miner. Track every repair. Control every rack.
 </p>
 
+<p align="center">
+  Know every miner • Track every repair • Control every rack
+</p>
+
+<p align="center">
+  <img src="https://img.shields.io/badge/status-active%20development-orange" />
+  <img src="https://img.shields.io/badge/python-3.13-blue" />
+  <img src="https://img.shields.io/badge/license-TBD-lightgrey" />
+</p>
+
+---
+
 ## Overview
 
-MinerOps is a self-hosted platform intended to provide one authoritative source
-of truth for cryptocurrency mining operations. It is being built to connect
-asset records, network identity, repair history, physical location, telemetry,
-and operational controls without depending on a hosted management service.
+MinerOps is an open-source operations platform built for cryptocurrency mining facilities.
 
-The repository contains a working early-stage application and the first
-foundations of a more modular architecture. Current development is focused on
-turning those foundations into well-defined product domains with tested service
-and persistence boundaries.
+Rather than relying on spreadsheets, disconnected monitoring tools, and handwritten repair logs, MinerOps brings every operational workflow together into a single self-hosted application.
 
-The longer-term product direction combines:
+MinerOps is designed to manage the complete lifecycle of a mining fleet, including inventory, physical locations, repairs, monitoring, maintenance, and secure remote management.
 
-- Miner inventory
-- Network discovery and identity tracking
-- Repairs and maintenance
-- Locations and electrical infrastructure
-- Monitoring and alerts
-- Fleet control
-- Scheduling and automation
-- Historical records and reporting
+Originally developed for WhatsMiner fleets, the platform is being built around a modular architecture that will support additional miner platforms through protocol adapters in future releases.
 
-These areas describe the product direction, not a claim that every workflow is
-complete or ready for production use.
+---
 
-## Why MinerOps?
+# Vision
 
-Mining operations often accumulate several partial versions of the truth:
-spreadsheets for assets, separate monitoring tools for performance, informal
-repair notes, and location knowledge held by individual technicians.
+Running a mining operation requires far more than knowing whether a miner is online.
 
-That fragmentation becomes harder to manage when IP addresses change, control
-boards or network interfaces are replaced, equipment moves between racks, and
-repair history is incomplete. MinerOps is intended to give operators one
-self-hosted operational record that follows each miner through its full
-lifecycle.
+MinerOps is designed to become the operational hub for an entire mining facility by combining:
 
-## Core Capabilities
+- Asset Inventory
+- Physical Location Management
+- Repair & Maintenance Tracking
+- Live Fleet Monitoring
+- Historical Reporting
+- Secure Remote Management
+- Operational Analytics
+- Fleet Automation
 
-### Asset and Inventory Management
+into one cohesive platform.
 
-Maintain stable asset records independently of a miner's current IP address.
-The inventory schema and backend domain foundation currently support Asset IDs,
-hardware identifiers, lifecycle state, tags, notes, location references, and
-seen timestamps. Inventory HTTP APIs and product workflows are the next
-application milestone.
+The long-term goal is to replace multiple disconnected systems with a single source of truth for mining operations.
 
-### Miner Identity and Discovery
+---
 
-Associate changing network information with durable miner records. Existing
-code includes discovery and network identity foundations; formal identity
-history and transfer workflows remain planned work.
+# Current Status
 
-### Repairs and Maintenance
+⚠️ **MinerOps is under active development.**
 
-Build a complete service history around each miner, including repair status,
-notes, parts, and return-to-service workflows. Operational repair functionality
-exists today, while extraction into a dedicated domain architecture is still
-planned.
+The current focus is building a scalable, maintainable architecture before expanding user-facing functionality.
 
-### Locations and Infrastructure
-
-Track where equipment is installed and relate miners to sites, rooms, racks,
-shelves, and operational infrastructure. Existing location workflows will be
-refined as the modular architecture develops.
-
-### Monitoring and Health
-
-Collect miner status and telemetry, identify stale or unhealthy equipment, and
-support operational health views. The repository contains current telemetry and
-retention foundations; broader alerting remains planned.
-
-### Fleet Operations
-
-Provide controlled fleet actions while keeping command policy, authorization,
-and site-local execution explicit. Existing command workflows are under active
-development and should not be treated as a finished control platform.
-
-### Automation and Scheduling
-
-Coordinate recurring scans, scheduled actions, retention, and other repeatable
-operations. Scheduling and automation will expand after the core inventory and
-identity domains are established.
-
-### Audit History and Reporting
-
-Preserve important operational changes and support practical reporting across
-assets, repairs, locations, and fleet activity. Audit-log and reporting
-foundations exist; the complete reporting model remains planned.
-
-## Current Status
-
-MinerOps is under active development.
-
-**Current development stage:** `v0.2 - Foundation`
-
-Verified foundations in the repository include:
+## Completed
 
 - Docker-based development environment
-- PostgreSQL data store
-- Redis service
-- Alembic schema migrations
-- Session-based authentication and login gating
-- Admin, Manager, Technician, and Read Only role foundations
-- Manual miner inventory database schema
-- Inventory Pydantic models
-- Inventory repository and service domain foundation
-- Automated repository and service tests for the Inventory domain
-- Disposable development baseline tests
+- PostgreSQL + Redis backend
+- Alembic migration framework
+- Authentication
+- Role-based access control
+- Manual inventory schema
+- Inventory domain architecture
+- Automated migration testing
+- Disposable development environment
 
-**Next application milestone:** `v0.3 - Inventory`
+## Currently In Progress
 
-**Next technical feature:** Inventory API
+- Inventory API
+- Inventory user interface
+- Domain-driven architecture migration
 
-## Architecture
+## Planned
 
-MinerOps is moving toward a modular backend with deliberate separation between
-transport, business rules, and persistence:
+- Asset identity & MAC history
+- Physical location management
+- Repair & work order management
+- Parts inventory
+- Fleet monitoring
+- Site agents
+- Multi-version WhatsMiner API support
+- Alerting & notifications
+- Bulk operations
+- Scheduled automation
+- Reporting & analytics
+- Production deployment tools
 
-```text
-Frontend
-    |
-    v
-FastAPI routers
-    |
-    v
-Domain services
-    |
-    v
-Repositories
-    |
-    v
+---
+
+# Core Features
+
+## 📦 Asset Inventory
+
+Maintain a permanent identity for every miner independent of its network configuration.
+
+Planned capabilities include:
+
+- Asset IDs
+- MAC history
+- Control board tracking
+- PSU serial tracking
+- Firmware history
+- Lifecycle management
+- Tags
+- Notes
+- Asset movement history
+
+---
+
+## 📍 Physical Location Tracking
+
+Track exactly where every miner is installed.
+
+Supports:
+
+- Sites
+- Rooms
+- Rows
+- Racks
+- Shelves
+- Positions
+
+with complete movement history.
+
+---
+
+## 🔧 Repair Management
+
+Track every repair from diagnosis through return to production.
+
+Features include:
+
+- Work orders
+- Technician notes
+- Parts used
+- Repair history
+- Testing
+- Attachments
+- Maintenance mode
+
+---
+
+## 📊 Fleet Monitoring
+
+Monitor operational health across the fleet.
+
+Planned monitoring includes:
+
+- Hashrate
+- Temperature
+- Fan status
+- Hashboard health
+- PSU status
+- Pool connectivity
+- Worker information
+- Firmware
+- Alerts
+
+---
+
+## 🌐 Network Discovery
+
+Automatically discover miners while maintaining stable asset identities.
+
+Planned capabilities include:
+
+- Configurable scan ranges
+- Duplicate detection
+- MAC history
+- IP history
+- Capability detection
+- Discovery review workflow
+
+---
+
+## 🎛 Secure Remote Control
+
+Safely execute commands against supported miners.
+
+Examples include:
+
+- Reboot
+- Shutdown
+- Performance mode
+- Pool configuration
+- Firmware operations
+
+All commands will be permission-aware, audited, and designed for safe execution.
+
+---
+
+## 🛰 Site Agents
+
+Future releases will include lightweight Site Agents responsible for:
+
+- Network discovery
+- Miner polling
+- Local command execution
+- Secure communication with the MinerOps server
+
+This architecture allows mining networks to remain isolated while still enabling centralized fleet management.
+
+---
+
+# Architecture
+
+MinerOps follows a layered architecture that separates business logic from persistence.
+
+```
+FastAPI Routers
+        │
+        ▼
+Service Layer
+        │
+        ▼
+Repository Layer
+        │
+        ▼
 PostgreSQL
 ```
 
-FastAPI routers will own HTTP request and response concerns. Domain services
-will own operational rules and orchestration. Repositories will own database
-access. The Inventory domain is the first backend area established with these
-boundaries; other working application areas are still being migrated
-incrementally.
+Business rules belong in Services.
 
-## Technology Stack
+Database access belongs in Repositories.
 
-Current technologies:
+Schema changes are managed exclusively through Alembic migrations.
+
+This architecture keeps MinerOps modular, testable, and easy to extend.
+
+---
+
+# Technology Stack
+
+Current
 
 - Python
 - FastAPI
-- Pydantic
 - PostgreSQL
-- Alembic
 - Redis
-- Docker and Docker Compose
-- Nginx development gateway
+- Alembic
+- Docker Compose
+- Pydantic
 
-A typed, responsive frontend with a shared design system is planned. Its
-technology selection has not yet been finalized in this repository.
+Planned
 
-## Roadmap
+- React
+- TypeScript
+- Site Agents
+- Protocol adapters
+- Background task processing
 
-- `v0.2 - Foundation`
-- `v0.3 - Inventory`
-- `v0.4 - Identity`
-- `v0.5 - Operations`
-- `v0.6 - Monitoring`
-- `v0.7 - Automation`
-- `v1.0 - Production Ready`
+---
 
-Roadmap scope and release boundaries may evolve as development continues and
-operational requirements become clearer.
+# Development Philosophy
 
-## Documentation
+MinerOps is built around a few guiding principles.
 
-Detailed product, architecture, development, database, testing, and roadmap
-documentation will live under `docs/`. That documentation set is still being
-developed, so this README does not link to files that do not yet exist.
+- Self-hosted first
+- Reliability over unnecessary complexity
+- Small, reviewable commits
+- Test before commit
+- Database changes managed through Alembic
+- Business logic separated from persistence
+- Secure by default
+- Role-based authorization
+- Comprehensive audit logging
+- Incremental development over large rewrites
 
-## Contributing
+---
 
-MinerOps is in early development. Contribution guidelines will be added as the
-architecture, development workflow, and review expectations stabilize.
+# Roadmap
 
-## License
+| Version | Focus |
+|----------|---------------------------|
+| ✅ v0.2 | Foundation |
+| 🚧 v0.3 | Inventory |
+| ⏳ v0.4 | Asset Identity |
+| ⏳ v0.5 | Operations |
+| ⏳ v0.6 | Monitoring |
+| ⏳ v0.7 | Automation |
+| 🎯 v1.0 | Production Release |
 
-The MinerOps license has not yet been finalized. No license file is currently
-included in this repository.
+Detailed planning will be maintained in **docs/ROADMAP.md**.
+
+---
+
+# Documentation
+
+Project documentation is maintained in the `docs/` directory.
+
+Documentation includes:
+
+- Architecture
+- Roadmap
+- Architecture Decisions
+- Development Guide
+- Coding Standards
+- Database Design
+- API Documentation
+- Deployment Guide
+- Testing Guide
+
+---
+
+# Contributing
+
+MinerOps is currently under active development.
+
+Contributions, ideas, bug reports, and feature requests are welcome as the project continues to evolve.
+
+---
+
+# License
+
+License to be determined.

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 +1,269 @@
+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
+    )
+
+    # This transport accepts only the exact queries used by this enrichment script.
+    # Validate before creating a socket; callers cannot reinterpret a write as a read.
+    $readCommands = @("summary", "devs", "edevs", "stats", "pools", "devdetails",
+        "version", "get_version", "get_miner_info")
+    # PowerShell containment operators use culture comparisons, even with -c.
+    # Match ordinally and serialize the canonical literal; never trim/normalize.
+    $approvedCommand = $null
+    foreach ($candidate in $readCommands) {
+        if ([string]::Equals($candidate, $Command, [StringComparison]::Ordinal)) {
+            $approvedCommand = $candidate
+            break
+        }
+    }
+    if ($Port -ne 4028 -or $null -eq $approvedCommand) {
+        throw "unsupported_diagnostic_operation_stage_a"
+    }
+    $requestJson = @{ cmd = $approvedCommand } | ConvertTo-Json -Compress
+
+    $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()
+        $payload = [System.Text.Encoding]::ASCII.GetBytes($requestJson + "`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 +1,293 @@
+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
+    )
+
+    # Exact operation and parameter allowlist at the shared transport boundary.
+    # No extra keys (including credentials, command aliases, or parameter overrides)
+    # reach the wire, even when this function is called outside the poller loop.
+    $readCommands = @("get.device.info", "get.miner.setting", "get.miner.status",
+        "get.fan.setting", "get.device.custom_data")
+    $command = $Request["cmd"]
+    $approvedCommand = $null
+    if ($command -is [string]) {
+        foreach ($candidate in $readCommands) {
+            if ([string]::Equals($candidate, $command, [StringComparison]::Ordinal)) {
+                $approvedCommand = $candidate
+                break
+            }
+        }
+    }
+    if ($null -eq $approvedCommand) {
+        throw "unsupported_diagnostic_operation_stage_a"
+    }
+    $expectedKeys = @("cmd")
+    $wireRequest = [ordered]@{ cmd = $approvedCommand }
+    if ([string]::Equals($approvedCommand, "get.miner.status", [StringComparison]::Ordinal)) {
+        $expectedKeys += "param"
+        if ($Request["param"] -isnot [string] -or
+            -not [string]::Equals($Request["param"], "summary+pools+edevs", [StringComparison]::Ordinal)) {
+            throw "unsupported_diagnostic_operation_stage_a"
+        }
+        $wireRequest["param"] = "summary+pools+edevs"
+    }
+    if ($Request.Count -ne $expectedKeys.Count) {
+        throw "unsupported_diagnostic_operation_stage_a"
+    }
+    foreach ($key in $Request.Keys) {
+        $approvedKey = $false
+        if ($key -is [string]) {
+            foreach ($expectedKey in $expectedKeys) {
+                if ([string]::Equals($expectedKey, $key, [StringComparison]::Ordinal)) {
+                    $approvedKey = $true
+                    break
+                }
+            }
+        }
+        if (-not $approvedKey) {
+            throw "unsupported_diagnostic_operation_stage_a"
+        }
+    }
+
+    $client = $null
+    $stream = $null
+
+    try {
+        $json = ($wireRequest | 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 +1,100 @@
+# 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 = $port
+    }
+}
+
+function Invoke-MinerOpsControlApi3Command {
+    param([string]$IpAddress, [string]$Command, [object]$Param = $null)
+    throw "physical_control_disabled_stage_a"
+}
+
+function New-MinerOpsControlResult {
+    param(
+        [bool]$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)
+    # No current request schema binds authorization to physical identity.
+    # Do not parse, normalize, reinterpret, or transmit an old queued payload.
+    return New-MinerOpsControlResult -Accepted $false `
+        -VerificationAttempted $false -VerificationStatus "unavailable" `
+        -FailureCode "physical_control_disabled_stage_a" -QueueStatus "failed"
+}
+
+function Send-AgentCommandResult {
+    param(
+        [string]$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
+    $body = [ordered]@{
+        agent_id = [string]$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 = $false
+        control_unavailable_reason = "physical_control_disabled_stage_a"
+        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 +1,269 @@
+# MinerOps Windows Agent
+
+## Stage A physical-control containment
+
+Physical miner control is disabled in this version, including suspend, resume,
+performance-mode changes, reboot, M30 tests, and miner-side password changes.
+No environment flag, configured API3 credential, or Agent capability report can
+enable it. This is containment, not completion of Blocker #3 identity binding.
+
+The Hub returns HTTP 410 for retired legacy command, scheduling, and unrestricted
+diagnostic endpoints (after authorization where applicable). Typed control POSTs
+require `miners.control` and return HTTP 409 `physical_control_disabled_stage_a`.
+The unrestricted `whatsminer-read-test` endpoint is not a supported read-only tool.
+
+Authenticated queue polling cancels pending/claimed physical and unknown command
+types, records an atomic `agent.command.rejected` audit entry, and only delivers
+fixed telemetry/discovery command types. Results cannot promote retired entries.
+Original payloads, prior results/errors, timestamps, and terminal history remain.
+Cancellation of an already claimed command does **not** prove it was never sent;
+the audit explicitly records its previous execution outcome as unknown.
+
+The Windows executor rejects all current physical-control schemas without any
+device connection and advertises physical control as unavailable. Existing Agents
+must be stopped/drained and upgraded before claiming fleet-wide containment:
+server cancellation cannot recall payloads cached by older running Agents.
+Do not enable control or deploy this work before separate security review.
+The ordered, fail-closed procedure is in
+[the Stage A old-Agent cutover runbook](../../docs/operations/STAGE_A_OLD_AGENT_CUTOVER.txt).
+Native Windows PowerShell 5.1/SYSTEM validation and verified fleet network fencing
+remain production gates; server cancellation alone cannot contain an old executor.
+
+Retained legacy/API3 enrichment helpers validate exact read commands and fixed
+parameters before opening a socket. Unknown operations and extra keys fail closed.
+Schedule cancel/delete require `miners.control` and retire matching live unsupported
+commands for the stored Agent with atomic actor-attributed rejection audits.
+Deletion retains schedule history; retries do not duplicate audits. Previously
+claimed execution remains unknown. Manual cutover retirement does not claim read
+work and must sweep offline/queue-only Agent IDs until the global live count is zero.
+
+The Windows Agent runs at a mining site and performs local discovery, polling,
+API3 enrichment, and pool polling. Physical miner control is disabled in Stage A.
+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 +1,115 @@
+$ErrorActionPreference = "Stop"
+$script:assertions = 0
+$script:physicalCalls = 0
+$script:readCalls = 0
+$script:apiCalls = @()
+$script:commands = @()
+
+function Assert-Equal($Actual, $Expected, [string]$Message) {
+    $script:assertions++
+    if ($Actual -ne $Expected) { throw "$Message. Expected '$Expected', got '$Actual'." }
+}
+function Assert-Throws($Block, [string]$Message) {
+    $caught = $false
+    try { & $Block | Out-Null } catch {
+        $caught = $true
+        Assert-Equal $_.Exception.Message "physical_control_disabled_stage_a" $Message
+    }
+    Assert-Equal $caught $true "$Message must reject"
+}
+
+# Define functions from the real service AST, without executing its service loop,
+# config loading, startup, or any scheduled tasks.
+$root = Split-Path $PSScriptRoot -Parent
+$tokens = $null; $parseErrors = $null
+$ast = [System.Management.Automation.Language.Parser]::ParseFile(
+    (Join-Path $root "MinerOpsAgentService.ps1"), [ref]$tokens, [ref]$parseErrors)
+Assert-Equal $parseErrors.Count 0 "Service parser"
+foreach ($function in $ast.FindAll({
+    param($node)
+    $node -is [System.Management.Automation.Language.FunctionDefinitionAst] -and
+        $node.Parent -is [System.Management.Automation.Language.NamedBlockAst]
+}, $true)) {
+    Invoke-Expression $function.Extent.Text
+}
+
+$script:productionApi3Payload = (Get-Command Invoke-MinerOpsApi3Payload).ScriptBlock
+$script:productionPlainCommand = (Get-Command Invoke-MinerPlainCommand).ScriptBlock
+function Invoke-MinerOpsApi3Payload { $script:physicalCalls++; throw "Unexpected API3 transport" }
+function Get-MinerOpsApi3Salt { $script:physicalCalls++; throw "Unexpected salt probe" }
+function Invoke-MinerPlainCommand { $script:physicalCalls++; throw "Unexpected legacy transport" }
+function Read-AgentConfig { return [pscustomobject]@{
+    agent_id = "simulated-agent"; site_id = ""; site_name = "Simulation"
+    api3_account = "operator"; api3_password = "mock-only"; api3_port = 4433
+} }
+function Write-AgentLog { param([string]$Message) }
+function Invoke-AgentApi {
+    param([string]$Method, [string]$Path, [object]$Body)
+    $script:apiCalls += @{ method = $Method; path = $Path; body = $Body }
+    return @{ ok = $true }
+}
+function Get-PendingAgentCommands { return $script:commands }
+function Run-KnownMinerPoll { $script:readCalls++; return @{ simulated = $true } }
+function Run-NewMinerDiscovery { $script:readCalls++; return @{ simulated = $true } }
+
+# The pre-module legacy implementation must also be inert, including helpers
+# which used to support direct generic API3 or M30/4028 writes.
+Assert-Throws { Run-MinerControlCommand -Payload @{ action = "reboot"; dry_run = $false } } "Legacy executor"
+Assert-Throws { Invoke-MinerOpsApi3Service -IpAddress "192.0.2.1" -ServiceAction "stop" } "Legacy service helper"
+Assert-Throws { & $script:productionApi3Payload -IpAddress "192.0.2.1" -Payload @{ cmd = "set.miner.service"; param = "stop" } } "Generic API3 payload helper"
+Assert-Throws { & $script:productionPlainCommand -IpAddress "192.0.2.1" -Command "reboot" } "Generic legacy command helper"
+Assert-Throws { Invoke-MinerOpsApi3AuthenticatedCommand -IpAddress "192.0.2.1" -Command "set.miner.service" -Param "stop" } "Legacy API3"
+Assert-Throws { Invoke-MinerOpsLegacy4028Command -IpAddress "192.0.2.1" -CommandJson '{"command":"reboot"}' } "Legacy 4028"
+Assert-Throws { Invoke-MinerOpsM30Legacy4028Test -Payload @{ legacy_4028_command = "reboot" } } "M30 helper"
+
+. (Join-Path $root "MinerOpsControl.ps1")
+Assert-Throws { Invoke-MinerOpsControlApi3Command -IpAddress "192.0.2.1" -Command "set.miner.service" -Param "stop" } "Typed transport"
+Assert-Throws { Invoke-MinerOpsControlApi3Command -IpAddress "192.0.2.1" -Command "get.read_then_write" } "Disguised diagnostic"
+
+$payloads = @(
+    @{ action = "legacy_4028"; legacy_4028_command = "reboot"; dry_run = $false },
+    @{ action = "reboot"; ip_address = "192.0.2.1" },
+    @{ schema_version = 1; action = "suspend"; ip_address = "192.0.2.1"; miner_id = "spoofed" },
+    @{ schema_version = 1; action = "resume"; ip_address = "192.0.2.1" },
+    @{ schema_version = 1; action = "performance_mode"; requested_value = "high"; ip_address = "192.0.2.1" },
+    @{ schema_version = 999; action = "suspend" },
+    @{ schema_version = "1"; action = "performance_mode"; performance_mode = "high" },
+    @{ command = "summary"; params = @{ cmd = "set.miner.service"; param = "stop" } },
+    @{ action = "read_reboot"; dry_run = $true },
+    @{},
+    '{"schema_version":0,"action":"reboot"}',
+    "{invalid-json"
+)
+foreach ($payload in $payloads) {
+    $result = Run-MinerControlCommand -Payload $payload
+    Assert-Equal $result.command_accepted $false "Rejected payload acceptance"
+    Assert-Equal $result.failure_code "physical_control_disabled_stage_a" "Rejected payload reason"
+    Assert-Equal $result._queue_status "failed" "Rejected payload terminal result"
+    Assert-Equal $result.verification_attempted $false "No physical verification/probe"
+    Assert-Equal $result.observed_service_state $null "No invented device state"
+    Assert-Equal $script:physicalCalls 0 "No physical calls"
+    $script:commands = @(@{ command_id = "legacy-delivery"; command_type = "miner_control"; request_payload = $payload })
+    $script:apiCalls = @()
+    Assert-Equal (Process-PendingCommands) 1 "Delivered legacy command handled"
+    Assert-Equal $script:apiCalls.Count 1 "One failed result submitted"
+    Assert-Equal $script:apiCalls[0].body.status "failed" "Legacy delivery failed"
+    Assert-Equal $script:apiCalls[0].body.result_payload.command_accepted $false "Legacy delivery not accepted"
+    Assert-Equal $script:physicalCalls 0 "No writes after delivery"
+}
+foreach ($kind in @("raw_api3", "miner_control_v2", "read_reboot", "")) {
+    $script:commands = @(@{ command_id = "unsupported"; command_type = $kind; request_payload = @{ action = "reboot" } })
+    $script:apiCalls = @()
+    Assert-Equal (Process-PendingCommands) 1 "Unknown command handled"
+    Assert-Equal $script:apiCalls[0].body.status "failed" "Unknown command fails closed"
+}
+Assert-Equal $script:readCalls 0 "No physical request reinterpreted as telemetry"
+$script:commands = @(@{ command_id = "read-only"; command_type = "poll_known_miners_now"; request_payload = @{} })
+$script:apiCalls = @()
+Assert-Equal (Process-PendingCommands) 1 "Fixed read-only command available"
+Assert-Equal $script:readCalls 1 "Only simulated read performed"
+Assert-Equal $script:physicalCalls 0 "No physical calls in entire suite"
+$script:apiCalls = @()
+Send-AgentCheckin | Out-Null
+Assert-Equal $script:apiCalls[0].body.control_available $false "Cannot advertise physical capability"
+Assert-Equal $script:apiCalls[0].body.control_unavailable_reason "physical_control_disabled_stage_a" "Containment advertised"
+Write-Host "Stage A Windows containment passed: $($script:assertions) assertions; zero physical transport calls."

agents/windows/tests/Test-MinerOpsDiagnosticTransport.ps1

@@ -0,0 +1,199 @@
+$ErrorActionPreference = "Stop"
+$script:assertions = 0
+$script:connections = 0
+$TimeoutMs = 1000
+
+function Assert-True([bool]$Condition, [string]$Message) {
+    $script:assertions++
+    if (-not $Condition) { throw $Message }
+}
+function Assert-Rejected([scriptblock]$Call) {
+    $before = $script:connections
+    $caught = $false
+    try { & $Call | Out-Null } catch {
+        $caught = $true
+        Assert-True ($_.Exception.Message -eq "unsupported_diagnostic_operation_stage_a") "Must reject before transport"
+    }
+    Assert-True $caught "Unsupported diagnostics must throw"
+    Assert-True ($script:connections -eq $before) "Rejected request must create zero sockets and write zero bytes"
+}
+function Import-Definitions([string]$Path) {
+    $tokens = $null; $errors = $null
+    $ast = [System.Management.Automation.Language.Parser]::ParseFile($Path, [ref]$tokens, [ref]$errors)
+    Assert-True ($errors.Count -eq 0) "Production script must parse"
+    foreach ($definition in $ast.FindAll({
+        param($node)
+        $node -is [System.Management.Automation.Language.FunctionDefinitionAst] -and
+        $node.Parent -is [System.Management.Automation.Language.NamedBlockAst]
+    }, $true)) {
+        . ([scriptblock]::Create("function global:" + $definition.Name + " " + $definition.Body.Extent.Text))
+    }
+}
+
+# Load only real function definitions: no config, Hub request, or scheduled loop.
+$root = Split-Path $PSScriptRoot -Parent
+Import-Definitions (Join-Path $root "EnrichOneMiner.ps1")
+Import-Definitions (Join-Path $root "MinerOpsApi3EnrichmentPoller.ps1")
+Import-Definitions (Join-Path $root "MinerOpsPoolPoller.ps1")
+
+function New-Object {
+    param([Parameter(Position=0)][string]$TypeName,
+          [Parameter(Position=1)][object[]]$ArgumentList)
+    if ($TypeName -eq "System.Net.Sockets.TcpClient") { $script:connections++ }
+    if ($null -ne $ArgumentList) {
+        return Microsoft.PowerShell.Utility\New-Object -TypeName $TypeName -ArgumentList $ArgumentList
+    }
+    return Microsoft.PowerShell.Utility\New-Object -TypeName $TypeName
+}
+
+# Auditor reproductions plus write families, alias/parameter overrides, injection,
+# malformed structures and operations that merely contain a read-looking substring.
+foreach ($command in @("reboot", "set.miner.service", "power_off", "switchpool", "ascset",
+    "summary|reboot", "summary`nreboot", 'summary","cmd":"reboot', "read_then_reboot",
+    "SUMMARY", "", "get.device.info", "get_miner_info|all")) {
+    Assert-Rejected { Invoke-MinerCommandRaw -IpAddress "127.0.0.1" -Command $command }
+}
+Assert-Rejected { Invoke-MinerCommandRaw -IpAddress "127.0.0.1" -Command "summary" -Port 4433 }
+$badRequests = @(
+    @{ cmd = "set.miner.service"; param = "stop" },
+    @{ cmd = "reboot" }, @{ cmd = "set.miner.power_mode"; param = "high" },
+    @{ cmd = "set.device.password"; param = "changed" }, @{ cmd = "get.read_then_write" },
+    @{ cmd = "get.device.info"; command = "reboot" },
+    @{ cmd = "get.device.info"; param = "stop" },
+    @{ cmd = "get.device.info"; account = "operator"; token = "anything" },
+    @{ cmd = "get.miner.status" }, @{ cmd = "get.miner.status"; param = "all" },
+    @{ cmd = "get.miner.status"; param = @("summary+pools+edevs") },
+    @{ cmd = "get.miner.status"; param = "summary+pools+edevs"; command = "reboot" },
+    @{ Cmd = "get.device.info" }, @{ cmd = "GET.DEVICE.INFO" },
+    @{ cmd = "get.device.info`nreboot" }, @{ cmd = @("get.device.info", "reboot") },
+    @{ cmd = $null }, @{}
+)
+foreach ($request in $badRequests) {
+    Assert-Rejected { Invoke-WhatsMinerApi3Read -Ip "127.0.0.1" -Request $request }
+    Assert-Rejected { Invoke-Api3OkCommand -Ip "127.0.0.1" -Request $request }
+}
+# Exact re-audit suffixes: U+0000, U+00AD and U+200B; also prefix/embedded
+# invisible characters, controls and whitespace. Never trim or normalize inputs.
+$originalCulture = [Threading.Thread]::CurrentThread.CurrentCulture
+try {
+    foreach ($cultureName in @("en-US", "tr-TR", "")) {
+        [Threading.Thread]::CurrentThread.CurrentCulture = [Globalization.CultureInfo]::GetCultureInfo($cultureName)
+        $variants = @()
+        foreach ($code in @(0, 0x00ad, 0x200b, 0x200c, 0x200d, 0x2060, 0xfeff,
+                             0x001f, 13, 10, 9, 32, 0x00a0)) {
+            $character = [string][char]$code
+            foreach ($position in @("prefix", "embedded", "suffix")) {
+                $variants += @{ Character = $character; Position = $position }
+            }
+        }
+        foreach ($variant in $variants) {
+            $legacy = "summary"; $api = "get.device.info"; $key = "cmd"; $param = "summary+pools+edevs"
+            if ($variant.Position -eq "prefix") {
+                $legacy = $variant.Character + $legacy; $api = $variant.Character + $api
+                $key = $variant.Character + $key; $param = $variant.Character + $param
+            } elseif ($variant.Position -eq "embedded") {
+                $legacy = "sum" + $variant.Character + "mary"; $api = "get.device." + $variant.Character + "info"
+                $key = "c" + $variant.Character + "md"; $param = "summary+" + $variant.Character + "pools+edevs"
+            } else {
+                $legacy += $variant.Character; $api += $variant.Character
+                $key += $variant.Character; $param += $variant.Character
+            }
+            Assert-Rejected { Invoke-MinerCommandRaw -IpAddress "127.0.0.1" -Command $legacy }
+            Assert-Rejected { Invoke-WhatsMinerApi3Read -Ip "127.0.0.1" -Request @{ cmd = $api } }
+            Assert-Rejected { Invoke-Api3OkCommand -Ip "127.0.0.1" -Request @{ cmd = $api } }
+            $request = @{}; $request[$key] = "get.device.info"
+            Assert-Rejected { Invoke-WhatsMinerApi3Read -Ip "127.0.0.1" -Request $request }
+            Assert-Rejected { Invoke-WhatsMinerApi3Read -Ip "127.0.0.1" -Request @{ cmd = "get.miner.status"; param = $param } }
+            $request = @{ cmd = "get.miner.status" }; $request[$key.Replace("cmd", "param")] = "summary+pools+edevs"
+            Assert-Rejected { Invoke-WhatsMinerApi3Read -Ip "127.0.0.1" -Request $request }
+        }
+        foreach ($legacy in @(("summar" + [char]0x0443), ([char]0xff53 + "ummary"),
+                              ("summ" + [char]0x0061 + [char]0x0301 + "ry"),
+                              ("summ" + [char]0x00e1 + "ry"), "Summary", "summary/", "summary+")) {
+            Assert-Rejected { Invoke-MinerCommandRaw -IpAddress "127.0.0.1" -Command $legacy }
+        }
+        foreach ($api in @(("get.dev" + [char]0x0456 + "ce.info"), ("get" + [char]0xff0e + "device.info"),
+                           ([char]0xff47 + "et.device.info"), "Get.Device.Info", "get.device.info/", "get.device.info+")) {
+            Assert-Rejected { Invoke-WhatsMinerApi3Read -Ip "127.0.0.1" -Request @{cmd=$api} }
+        }
+        Assert-Rejected { Invoke-WhatsMinerApi3Read -Ip "127.0.0.1" -Request @{cmd="get.miner.status"; Param="summary+pools+edevs"} }
+        Assert-Rejected { Invoke-WhatsMinerApi3Read -Ip "127.0.0.1" -Request @{cmd="get.miner.status"; param="Summary+pools+edevs"} }
+    }
+} finally { [Threading.Thread]::CurrentThread.CurrentCulture = $originalCulture }
+Assert-True ($script:connections -eq 0) "All negative cases produced zero transport connections/writes"
+
+# Real TCP compatibility tests: bind loopback only, one request per simulator.
+# This suite must be run with physical networks disconnected (Docker --network none).
+Add-Type -TypeDefinition @'
+using System;
+using System.Net;
+using System.Net.Sockets;
+using System.Text;
+using System.Threading;
+public class MinerOpsDiagnosticSimulator : IDisposable {
+    TcpListener listener;
+    Thread thread;
+    public string Payload;
+    public string Error;
+    public MinerOpsDiagnosticSimulator(int port, bool framed) {
+        listener = new TcpListener(IPAddress.Loopback, port); listener.Start();
+        thread = new Thread(() => {
+            try {
+                using (var client = listener.AcceptTcpClient()) {
+                    client.ReceiveTimeout = 2000;
+                    var stream = client.GetStream(); var buffer = new byte[65536]; int count;
+                    if (framed) {
+                        var length = new byte[4]; ReadExact(stream, length, 4);
+                        count = BitConverter.ToInt32(length, 0);
+                        if(count < 1 || count > buffer.Length) throw new Exception("Bad request length");
+                        ReadExact(stream, buffer, count);
+                    } else { count = stream.Read(buffer, 0, buffer.Length); }
+                    Payload = Encoding.ASCII.GetString(buffer, 0, count);
+                    var response = Encoding.ASCII.GetBytes("{\"code\":0,\"POOLS\":[],\"msg\":{}}");
+                    if(framed) { var length = BitConverter.GetBytes(response.Length); stream.Write(length,0,4); }
+                    stream.Write(response, 0, response.Length);
+                }
+            } catch(Exception e) { Error = e.Message; }
+            finally { listener.Stop(); }
+        }); thread.IsBackground = true; thread.Start();
+    }
+    static void ReadExact(NetworkStream stream, byte[] bytes, int count) {
+        int offset=0;
+        while(offset<count) { int n=stream.Read(bytes,offset,count-offset); if(n==0) throw new Exception("EOF"); offset+=n; }
+    }
+    public void Dispose() { listener.Stop(); thread.Join(3000); }
+}
+'@
+
+foreach ($command in @("summary", "devs", "edevs", "stats", "pools", "devdetails", "version", "get_version", "get_miner_info")) {
+    $miner = [MinerOpsDiagnosticSimulator]::new(4028, $false)
+    try {
+        $null = Invoke-MinerCommandRaw -IpAddress "127.0.0.1" -Command $command -TimeoutMs 100
+        $observed = $miner.Payload | ConvertFrom-Json
+        Assert-True ([string]::Equals($observed.cmd, $command, [StringComparison]::Ordinal)) "Legacy query must remain compatible"
+        Assert-True ($observed.PSObject.Properties.Count -eq 1) "Legacy request contains only selected read"
+        Assert-True (-not $miner.Error) "Simulator received a valid legacy request"
+    } finally { $miner.Dispose() }
+}
+foreach ($command in @("get.device.info", "get.miner.setting", "get.miner.status", "get.fan.setting", "get.device.custom_data")) {
+    $request = @{ cmd = $command }
+    if ($command -ceq "get.miner.status") { $request.param = "summary+pools+edevs" }
+    $miner = [MinerOpsDiagnosticSimulator]::new(4433, $true)
+    try {
+        $result = Invoke-Api3OkCommand -Ip "127.0.0.1" -Request $request
+        $observed = $miner.Payload | ConvertFrom-Json
+        Assert-True ($null -ne $result) "Existing API3 reader wrapper remains compatible"
+        Assert-True ([string]::Equals($observed.cmd, $command, [StringComparison]::Ordinal)) "Exact API3 query transmitted"
+        Assert-True (@($observed.PSObject.Properties).Count -eq $request.Count) "No additional API3 request keys"
+        if ($command -ceq "get.miner.status") {
+            Assert-True ([string]::Equals($observed.param, "summary+pools+edevs", [StringComparison]::Ordinal)) "Only exact read parameter transmitted"
+        }
+        Assert-True (-not $miner.Error) "Simulator received a valid framed read"
+    } finally { $miner.Dispose() }
+}
+$miner = [MinerOpsDiagnosticSimulator]::new(4028, $false)
+try {
+    $null = Invoke-MinerOps4028PoolsSimple -Ip "127.0.0.1"
+    Assert-True (($miner.Payload | ConvertFrom-Json).command -ceq "pools") "Pool poller sends a constant read"
+} finally { $miner.Dispose() }
+Write-Host "Diagnostic containment passed: $($script:assertions) assertions; all rejected operations made zero connections/writes."

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/Test-MinerOpsOldAgentFence.ps1

@@ -0,0 +1,46 @@
+param(
+    [Parameter(Mandatory=$true)][string]$BaselineRoot,
+    [Parameter(Mandatory=$true)][string]$CachedPayloadPath,
+    [Parameter(Mandatory=$true)][string]$MinerIp,
+    [switch]$ExpectFenced
+)
+$ErrorActionPreference = "Stop"
+if ($env:MINEROPS_STAGE_A_SIMULATION -ne "1") {
+    throw "Requires an explicitly isolated Stage A simulation; never use physical targets."
+}
+
+# Supply a git-archived 2d89e80 Windows source directory, NOT a running installation.
+# Only AST function definitions execute; no startup, config loading, or task loops.
+$tokens = $null; $errors = $null
+$ast = [System.Management.Automation.Language.Parser]::ParseFile(
+    (Join-Path $BaselineRoot "MinerOpsAgentService.ps1"), [ref]$tokens, [ref]$errors)
+if ($errors.Count) { throw "Baseline parser error" }
+foreach ($definition in $ast.FindAll({
+    param($node)
+    $node -is [System.Management.Automation.Language.FunctionDefinitionAst] -and
+    $node.Parent -is [System.Management.Automation.Language.NamedBlockAst]
+}, $true)) {
+    Invoke-Expression $definition.Extent.Text
+}
+. (Join-Path $BaselineRoot "MinerOpsControl.ps1")
+function Read-AgentConfig {
+    return [pscustomobject]@{
+        api3_account = "simulation"; api3_password = "simulation-only"; api3_port = 4433
+    }
+}
+function Get-MinerOpsApi3Salt { return @{ salt = "simulation-only"; salt_response = @{} } }
+
+$payload = Get-Content -LiteralPath $CachedPayloadPath -Raw | ConvertFrom-Json
+if ($payload.action -ne "suspend") { throw "This simulation expects the audited cached suspend command" }
+# Remap ONLY the target to the address of the dedicated disposable miner container.
+$payload.ip_address = $MinerIp
+$result = Run-MinerControlCommand -Payload $payload
+if ($ExpectFenced) {
+    if ($result.command_accepted -ne $false -or $result.failure_code -ne "write_rejected") {
+        throw "Old executor unexpectedly reached/accepted a simulated miner through the fence"
+    }
+    Write-Host "Fenced old cached command failed; independently verify simulator write count stayed zero."
+} else {
+    if ($result.command_accepted -ne $true) { throw "Unfenced control simulation did not reproduce old execution" }
+    Write-Host "Unfenced old cached command reproduced; simulated miner received service stop."
+}

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/0010_begin_repair.py

@@ -0,0 +1,322 @@
+"""add begin repair workflow
+
+Revision ID: 0010_begin_repair
+Revises: 0009_inventory_asset_id_history
+Create Date: 2026-07-29
+"""
+
+from typing import Sequence, Union
+
+import sqlalchemy as sa
+from alembic import op
+from sqlalchemy.dialects import postgresql
+
+
+revision: str = "0010_begin_repair"
+down_revision: Union[str, None] = "0009_inventory_asset_id_history"
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+REPAIR_STATUSES = (
+    "OPEN",
+    "IN_PROGRESS",
+    "WAITING_FOR_PARTS",
+    "READY_FOR_TEST",
+    "COMPLETED",
+    "CANCELLED",
+)
+ACTIVE_REPAIR_STATUSES = (
+    "OPEN",
+    "IN_PROGRESS",
+    "WAITING_FOR_PARTS",
+    "READY_FOR_TEST",
+)
+REPAIR_REASONS = (
+    "HARDWARE_FAILURE",
+    "LOW_HASHRATE",
+    "CONTROL_BOARD",
+    "HASHBOARD",
+    "PSU",
+    "FAN",
+    "OVERHEATING",
+    "NETWORKING",
+    "PREVENTIVE_MAINTENANCE",
+    "INSPECTION",
+    "OTHER",
+)
+REPAIR_EVENT_TYPES = ("REPAIR_STARTED", "INITIAL_NOTE")
+
+
+def _quoted(values: Sequence[str]) -> str:
+    return ", ".join(f"'{value}'" for value in values)
+
+
+def upgrade() -> None:
+    connection = op.get_bind()
+
+    op.drop_constraint("ck_miners_lifecycle_status", "miners", type_="check")
+    op.create_check_constraint(
+        "ck_miners_lifecycle_status",
+        "miners",
+        "lifecycle_status IN ('active', 'spare', 'retired', 'in_repair')",
+    )
+
+    connection.exec_driver_sql(
+        """
+        INSERT INTO permissions (key, description)
+        VALUES ('repairs.create', 'Begin repairs for miner assets')
+        ON CONFLICT (key) DO UPDATE
+        SET description = EXCLUDED.description
+        """
+    )
+    connection.exec_driver_sql(
+        """
+        INSERT INTO role_permissions (role_id, permission_id)
+        SELECT roles.id, permissions.id
+        FROM roles
+        JOIN permissions ON permissions.key = 'repairs.create'
+        WHERE roles.name IN ('Admin', 'Manager', 'Technician')
+        ON CONFLICT DO NOTHING
+        """
+    )
+
+    op.create_table(
+        "repairs",
+        sa.Column(
+            "id",
+            postgresql.UUID(as_uuid=True),
+            primary_key=True,
+            server_default=sa.text("gen_random_uuid()"),
+        ),
+        sa.Column(
+            "miner_id",
+            postgresql.UUID(as_uuid=True),
+            sa.ForeignKey("miners.id", ondelete="RESTRICT"),
+            nullable=False,
+        ),
+        sa.Column(
+            "status",
+            sa.Text(),
+            nullable=False,
+            server_default=sa.text("'OPEN'"),
+        ),
+        sa.Column("reason", sa.Text(), nullable=False),
+        sa.Column(
+            "opened_at",
+            sa.DateTime(timezone=True),
+            nullable=False,
+            server_default=sa.text("now()"),
+        ),
+        sa.Column(
+            "opened_by",
+            postgresql.UUID(as_uuid=True),
+            sa.ForeignKey("users.id", ondelete="RESTRICT"),
+            nullable=False,
+        ),
+        sa.Column(
+            "completed_at",
+            sa.DateTime(timezone=True),
+            nullable=True,
+        ),
+        sa.Column(
+            "completed_by",
+            postgresql.UUID(as_uuid=True),
+            sa.ForeignKey("users.id", ondelete="RESTRICT"),
+            nullable=True,
+        ),
+        sa.CheckConstraint(
+            f"status IN ({_quoted(REPAIR_STATUSES)})",
+            name="ck_repairs_status",
+        ),
+        sa.CheckConstraint(
+            f"reason IN ({_quoted(REPAIR_REASONS)})",
+            name="ck_repairs_reason",
+        ),
+        sa.CheckConstraint(
+            "(completed_at IS NULL AND completed_by IS NULL) OR "
+            "(completed_at IS NOT NULL AND completed_by IS NOT NULL)",
+            name="ck_repairs_completion_pair",
+        ),
+        sa.CheckConstraint(
+            "(status = 'COMPLETED') = (completed_at IS NOT NULL)",
+            name="ck_repairs_completed_state",
+        ),
+    )
+    op.create_index(
+        "idx_repairs_miner_opened_at",
+        "repairs",
+        ["miner_id", "opened_at", "id"],
+    )
+    op.create_index("idx_repairs_opened_by", "repairs", ["opened_by"])
+    op.create_index("idx_repairs_completed_by", "repairs", ["completed_by"])
+    op.create_index(
+        "uq_repairs_one_active_per_miner",
+        "repairs",
+        ["miner_id"],
+        unique=True,
+        postgresql_where=sa.text(
+            f"status IN ({_quoted(ACTIVE_REPAIR_STATUSES)})"
+        ),
+    )
+
+    op.create_table(
+        "repair_events",
+        sa.Column(
+            "id",
+            postgresql.UUID(as_uuid=True),
+            primary_key=True,
+            server_default=sa.text("gen_random_uuid()"),
+        ),
+        sa.Column(
+            "repair_id",
+            postgresql.UUID(as_uuid=True),
+            sa.ForeignKey("repairs.id", ondelete="RESTRICT"),
+            nullable=False,
+        ),
+        sa.Column("sequence", sa.Integer(), nullable=False),
+        sa.Column("event_type", sa.Text(), nullable=False),
+        sa.Column(
+            "created_at",
+            sa.DateTime(timezone=True),
+            nullable=False,
+            server_default=sa.text("now()"),
+        ),
+        sa.Column(
+            "created_by",
+            postgresql.UUID(as_uuid=True),
+            sa.ForeignKey("users.id", ondelete="RESTRICT"),
+            nullable=False,
+        ),
+        sa.Column(
+            "payload",
+            postgresql.JSONB(),
+            nullable=False,
+        ),
+        sa.CheckConstraint(
+            f"event_type IN ({_quoted(REPAIR_EVENT_TYPES)})",
+            name="ck_repair_events_type",
+        ),
+        sa.CheckConstraint(
+            "sequence > 0",
+            name="ck_repair_events_sequence_positive",
+        ),
+        sa.CheckConstraint(
+            "jsonb_typeof(payload) = 'object'",
+            name="ck_repair_events_payload_object",
+        ),
+        sa.CheckConstraint(
+            "("
+            "event_type = 'REPAIR_STARTED' "
+            "AND payload ?& ARRAY['reason', 'from_lifecycle', 'to_lifecycle'] "
+            f"AND payload ->> 'reason' IN ({_quoted(REPAIR_REASONS)}) "
+            "AND payload ->> 'from_lifecycle' IN ('active', 'spare') "
+            "AND payload ->> 'to_lifecycle' = 'in_repair'"
+            ") OR ("
+            "event_type = 'INITIAL_NOTE' "
+            "AND jsonb_typeof(payload -> 'note') = 'string' "
+            "AND trim(payload ->> 'note') <> ''"
+            ")",
+            name="ck_repair_events_payload_shape",
+        ),
+        sa.UniqueConstraint(
+            "repair_id",
+            "sequence",
+            name="uq_repair_events_repair_sequence",
+        ),
+    )
+    op.create_index(
+        "idx_repair_events_repair_created",
+        "repair_events",
+        ["repair_id", "created_at", "sequence", "id"],
+    )
+    op.create_index(
+        "idx_repair_events_created_by",
+        "repair_events",
+        ["created_by"],
+    )
+
+
+def downgrade() -> None:
+    connection = op.get_bind()
+
+    connection.exec_driver_sql(
+        f"""
+        DO $$
+        DECLARE
+            invalid_miner_ids TEXT;
+        BEGIN
+            SELECT string_agg(miner.id::text, ', ' ORDER BY miner.id::text)
+            INTO invalid_miner_ids
+            FROM miners AS miner
+            LEFT JOIN LATERAL (
+                SELECT count(*) AS started_event_count
+                FROM repairs AS repair
+                JOIN repair_events AS event
+                  ON event.repair_id = repair.id
+                 AND event.event_type = 'REPAIR_STARTED'
+                WHERE repair.miner_id = miner.id
+                  AND repair.status IN ({_quoted(ACTIVE_REPAIR_STATUSES)})
+            ) AS history ON TRUE
+            WHERE miner.lifecycle_status = 'in_repair'
+              AND history.started_event_count <> 1;
+
+            IF invalid_miner_ids IS NOT NULL THEN
+                RAISE EXCEPTION USING
+                    MESSAGE = format(
+                        'Cannot downgrade Begin Repair: miners %s do not have exactly one active REPAIR_STARTED event',
+                        invalid_miner_ids
+                    ),
+                    HINT = 'Repair the affected lifecycle history before downgrading; MinerOps will not invent a prior lifecycle value.';
+            END IF;
+        END
+        $$;
+        """
+    )
+    connection.exec_driver_sql(
+        f"""
+        UPDATE miners AS miner
+        SET lifecycle_status = history.from_lifecycle,
+            updated_at = now()
+        FROM (
+            SELECT
+                repair.miner_id,
+                event.payload ->> 'from_lifecycle' AS from_lifecycle
+            FROM repairs AS repair
+            JOIN repair_events AS event
+              ON event.repair_id = repair.id
+             AND event.event_type = 'REPAIR_STARTED'
+            WHERE repair.status IN ({_quoted(ACTIVE_REPAIR_STATUSES)})
+        ) AS history
+        WHERE miner.id = history.miner_id
+          AND miner.lifecycle_status = 'in_repair'
+        """
+    )
+
+    op.drop_index("idx_repair_events_created_by", table_name="repair_events")
+    op.drop_index("idx_repair_events_repair_created", table_name="repair_events")
+    op.drop_table("repair_events")
+
+    op.drop_index("uq_repairs_one_active_per_miner", table_name="repairs")
+    op.drop_index("idx_repairs_completed_by", table_name="repairs")
+    op.drop_index("idx_repairs_opened_by", table_name="repairs")
+    op.drop_index("idx_repairs_miner_opened_at", table_name="repairs")
+    op.drop_table("repairs")
+
+    connection.exec_driver_sql(
+        """
+        DELETE FROM role_permissions
+        WHERE permission_id = (
+            SELECT id FROM permissions WHERE key = 'repairs.create'
+        )
+        """
+    )
+    connection.exec_driver_sql(
+        "DELETE FROM permissions WHERE key = 'repairs.create'"
+    )
+
+    op.drop_constraint("ck_miners_lifecycle_status", "miners", type_="check")
+    op.create_check_constraint(
+        "ck_miners_lifecycle_status",
+        "miners",
+        "lifecycle_status IN ('active', 'spare', 'retired')",
+    )

backend/alembic/versions/0011_repair_timeline.py

@@ -0,0 +1,55 @@
+"""add repair timeline read permission
+
+Revision ID: 0011_repair_timeline
+Revises: 0010_begin_repair
+Create Date: 2026-07-29
+"""
+
+from typing import Sequence, Union
+
+from alembic import op
+
+
+revision: str = "0011_repair_timeline"
+down_revision: Union[str, None] = "0010_begin_repair"
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    connection = op.get_bind()
+
+    connection.exec_driver_sql(
+        """
+        INSERT INTO permissions (key, description)
+        VALUES ('repairs.read', 'View repair details and timeline events')
+        ON CONFLICT (key) DO UPDATE
+        SET description = EXCLUDED.description
+        """
+    )
+    connection.exec_driver_sql(
+        """
+        INSERT INTO role_permissions (role_id, permission_id)
+        SELECT roles.id, permissions.id
+        FROM roles
+        JOIN permissions ON permissions.key = 'repairs.read'
+        WHERE roles.name IN ('Admin', 'Manager', 'Technician', 'Read Only')
+        ON CONFLICT DO NOTHING
+        """
+    )
+
+
+def downgrade() -> None:
+    connection = op.get_bind()
+
+    connection.exec_driver_sql(
+        """
+        DELETE FROM role_permissions
+        WHERE permission_id = (
+            SELECT id FROM permissions WHERE key = 'repairs.read'
+        )
+        """
+    )
+    connection.exec_driver_sql(
+        "DELETE FROM permissions WHERE key = 'repairs.read'"
+    )

backend/alembic/versions/0012_return_to_service.py

@@ -0,0 +1,253 @@
+"""add return to service workflow
+
+Revision ID: 0012_return_to_service
+Revises: 0011_repair_timeline
+Create Date: 2026-07-29
+"""
+
+from typing import Sequence, Union
+
+import sqlalchemy as sa
+from alembic import op
+
+
+revision: str = "0012_return_to_service"
+down_revision: Union[str, None] = "0011_repair_timeline"
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+REPAIR_REASONS = (
+    "HARDWARE_FAILURE",
+    "LOW_HASHRATE",
+    "CONTROL_BOARD",
+    "HASHBOARD",
+    "PSU",
+    "FAN",
+    "OVERHEATING",
+    "NETWORKING",
+    "PREVENTIVE_MAINTENANCE",
+    "INSPECTION",
+    "OTHER",
+)
+
+
+def _quoted(values: Sequence[str]) -> str:
+    return ", ".join(f"'{value}'" for value in values)
+
+
+def _create_event_constraints() -> None:
+    op.create_check_constraint(
+        "ck_repair_events_type",
+        "repair_events",
+        "event_type IN ('REPAIR_STARTED', 'INITIAL_NOTE', "
+        "'REPAIR_COMPLETED')",
+    )
+    op.create_check_constraint(
+        "ck_repair_events_payload_shape",
+        "repair_events",
+        "("
+        "event_type = 'REPAIR_STARTED' "
+        "AND payload ?& ARRAY['reason', 'from_lifecycle', 'to_lifecycle'] "
+        f"AND payload ->> 'reason' IN ({_quoted(REPAIR_REASONS)}) "
+        "AND payload ->> 'from_lifecycle' IN ('active', 'spare') "
+        "AND payload ->> 'to_lifecycle' = 'in_repair'"
+        ") OR ("
+        "event_type = 'INITIAL_NOTE' "
+        "AND jsonb_typeof(payload -> 'note') = 'string' "
+        "AND trim(payload ->> 'note') <> ''"
+        ") OR ("
+        "event_type = 'REPAIR_COMPLETED' "
+        "AND payload ?& ARRAY["
+        "'previous_miner_lifecycle', 'resulting_miner_lifecycle'"
+        "] "
+        "AND payload ->> 'previous_miner_lifecycle' = 'in_repair' "
+        "AND payload ->> 'resulting_miner_lifecycle' "
+        "IN ('active', 'spare') "
+        "AND (NOT payload ? 'pre_repair_lifecycle' "
+        "OR payload ->> 'pre_repair_lifecycle' IN ('active', 'spare')) "
+        "AND (NOT payload ? 'completion_summary' OR ("
+        "jsonb_typeof(payload -> 'completion_summary') = 'string' "
+        "AND trim(payload ->> 'completion_summary') <> '' "
+        "AND char_length(payload ->> 'completion_summary') <= 4000"
+        "))"
+        ")",
+    )
+
+
+def _create_previous_event_constraints() -> None:
+    op.create_check_constraint(
+        "ck_repair_events_type",
+        "repair_events",
+        "event_type IN ('REPAIR_STARTED', 'INITIAL_NOTE')",
+    )
+    op.create_check_constraint(
+        "ck_repair_events_payload_shape",
+        "repair_events",
+        "("
+        "event_type = 'REPAIR_STARTED' "
+        "AND payload ?& ARRAY['reason', 'from_lifecycle', 'to_lifecycle'] "
+        f"AND payload ->> 'reason' IN ({_quoted(REPAIR_REASONS)}) "
+        "AND payload ->> 'from_lifecycle' IN ('active', 'spare') "
+        "AND payload ->> 'to_lifecycle' = 'in_repair'"
+        ") OR ("
+        "event_type = 'INITIAL_NOTE' "
+        "AND jsonb_typeof(payload -> 'note') = 'string' "
+        "AND trim(payload ->> 'note') <> ''"
+        ")",
+    )
+
+
+def upgrade() -> None:
+    connection = op.get_bind()
+
+    connection.exec_driver_sql(
+        """
+        INSERT INTO permissions (key, description)
+        VALUES ('repairs.complete', 'Return repaired miners to service')
+        ON CONFLICT (key) DO UPDATE
+        SET description = EXCLUDED.description
+        """
+    )
+    connection.exec_driver_sql(
+        """
+        INSERT INTO role_permissions (role_id, permission_id)
+        SELECT roles.id, permissions.id
+        FROM roles
+        JOIN permissions ON permissions.key = 'repairs.complete'
+        WHERE roles.name IN ('Admin', 'Manager', 'Technician')
+        ON CONFLICT DO NOTHING
+        """
+    )
+
+    op.add_column(
+        "repairs",
+        sa.Column("completion_summary", sa.Text(), nullable=True),
+    )
+    op.add_column(
+        "repairs",
+        sa.Column("resulting_lifecycle", sa.Text(), nullable=True),
+    )
+    op.create_check_constraint(
+        "ck_repairs_resulting_lifecycle",
+        "repairs",
+        "resulting_lifecycle IS NULL "
+        "OR resulting_lifecycle IN ('active', 'spare')",
+    )
+    op.create_check_constraint(
+        "ck_repairs_completion_summary",
+        "repairs",
+        "completion_summary IS NULL OR ("
+        "trim(completion_summary) <> '' "
+        "AND char_length(completion_summary) <= 4000"
+        ")",
+    )
+    # NOT VALID preserves truthful legacy COMPLETED rows whose destination was
+    # never recorded, while PostgreSQL still enforces the check for every new
+    # or updated row after this migration.
+    connection.exec_driver_sql(
+        """
+        ALTER TABLE repairs
+        ADD CONSTRAINT ck_repairs_completion_metadata_state
+        CHECK (
+            (
+                status = 'COMPLETED'
+                AND resulting_lifecycle IS NOT NULL
+            )
+            OR (
+                status <> 'COMPLETED'
+                AND completion_summary IS NULL
+                AND resulting_lifecycle IS NULL
+            )
+        )
+        NOT VALID
+        """
+    )
+
+    op.drop_constraint(
+        "ck_repair_events_payload_shape",
+        "repair_events",
+        type_="check",
+    )
+    op.drop_constraint(
+        "ck_repair_events_type",
+        "repair_events",
+        type_="check",
+    )
+    _create_event_constraints()
+
+
+def downgrade() -> None:
+    connection = op.get_bind()
+
+    connection.exec_driver_sql(
+        """
+        DO $$
+        DECLARE
+            completion_count BIGINT;
+        BEGIN
+            SELECT count(*)
+            INTO completion_count
+            FROM repairs
+            WHERE resulting_lifecycle IS NOT NULL
+               OR completion_summary IS NOT NULL;
+
+            completion_count := completion_count + (
+                SELECT count(*)
+                FROM repair_events
+                WHERE event_type = 'REPAIR_COMPLETED'
+            );
+
+            IF completion_count > 0 THEN
+                RAISE EXCEPTION USING
+                    MESSAGE = format(
+                        'Cannot downgrade Return to Service: %s completion records or events would lose authoritative history',
+                        completion_count
+                    ),
+                    HINT = 'Preserve or explicitly migrate Return to Service history before downgrading; MinerOps will not invent or discard lifecycle, actor, summary, or event values.';
+            END IF;
+        END
+        $$;
+        """
+    )
+
+    op.drop_constraint(
+        "ck_repair_events_payload_shape",
+        "repair_events",
+        type_="check",
+    )
+    op.drop_constraint(
+        "ck_repair_events_type",
+        "repair_events",
+        type_="check",
+    )
+    _create_previous_event_constraints()
+
+    op.drop_constraint(
+        "ck_repairs_completion_metadata_state",
+        "repairs",
+        type_="check",
+    )
+    op.drop_constraint(
+        "ck_repairs_completion_summary",
+        "repairs",
+        type_="check",
+    )
+    op.drop_constraint(
+        "ck_repairs_resulting_lifecycle",
+        "repairs",
+        type_="check",
+    )
+    op.drop_column("repairs", "resulting_lifecycle")
+    op.drop_column("repairs", "completion_summary")
+
+    connection.exec_driver_sql(
+        """
+        DELETE FROM role_permissions
+        WHERE permission_id = (
+            SELECT id FROM permissions WHERE key = 'repairs.complete'
+        )
+        """
+    )
+    connection.exec_driver_sql(
+        "DELETE FROM permissions WHERE key = 'repairs.complete'"
+    )

backend/alembic/versions/0013_control_board_replacement.py

@@ -0,0 +1,436 @@
+"""add control board replacement workflow
+
+Revision ID: 0013_control_board_replacement
+Revises: 0012_return_to_service
+Create Date: 2026-08-02
+"""
+
+from typing import Sequence, Union
+
+import sqlalchemy as sa
+from alembic import op
+from sqlalchemy.dialects import postgresql
+
+
+revision: str = "0013_control_board_replacement"
+down_revision: Union[str, None] = "0012_return_to_service"
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+REPAIR_REASONS = (
+    "HARDWARE_FAILURE", "LOW_HASHRATE", "CONTROL_BOARD", "HASHBOARD",
+    "PSU", "FAN", "OVERHEATING", "NETWORKING",
+    "PREVENTIVE_MAINTENANCE", "INSPECTION", "OTHER",
+)
+REPLACEMENT_REASONS = (
+    "failed", "upgrade", "diagnostic_swap", "preventive_maintenance",
+    "temporary_donor", "unknown",
+)
+DISPOSITIONS = (
+    "repair_inventory", "sent_for_repair", "scrapped",
+    "retained_for_diagnosis", "returned_to_vendor", "unknown",
+)
+
+
+def _quoted(values: Sequence[str]) -> str:
+    return ", ".join(f"'{value}'" for value in values)
+
+
+def _create_event_constraints(include_replacement: bool) -> None:
+    event_types = ["REPAIR_STARTED", "INITIAL_NOTE", "REPAIR_COMPLETED"]
+    if include_replacement:
+        event_types.append("CONTROL_BOARD_REPLACED")
+    op.create_check_constraint(
+        "ck_repair_events_type",
+        "repair_events",
+        f"event_type IN ({_quoted(event_types)})",
+    )
+    replacement_clause = ""
+    if include_replacement:
+        replacement_clause = (
+            ") OR (event_type = 'CONTROL_BOARD_REPLACED' "
+            "AND payload ?& ARRAY['old_mac_address', 'new_mac_address', "
+            "'old_control_board_serial', 'new_control_board_serial', "
+            "'replacement_reason', 'removed_board_disposition'] "
+            "AND jsonb_typeof(payload -> 'old_mac_address') IN ('string', 'null') "
+            "AND jsonb_typeof(payload -> 'new_mac_address') = 'string' "
+            "AND payload ->> 'new_mac_address' ~ '^([0-9A-F]{2}:){5}[0-9A-F]{2}$' "
+            "AND regexp_replace(lower(payload ->> 'new_mac_address'), '[^0-9a-f]', '', 'g') "
+            "NOT IN ('000000000000', 'ffffffffffff') "
+            "AND get_byte(decode(regexp_replace(lower(payload ->> 'new_mac_address'), "
+            "'[^0-9a-f]', '', 'g'), 'hex'), 0) % 2 = 0 "
+            "AND (jsonb_typeof(payload -> 'old_control_board_serial') = 'null' OR ("
+            "jsonb_typeof(payload -> 'old_control_board_serial') = 'string' "
+            "AND trim(payload ->> 'old_control_board_serial') <> '' "
+            "AND char_length(payload ->> 'old_control_board_serial') <= 255)) "
+            "AND (jsonb_typeof(payload -> 'new_control_board_serial') = 'null' OR ("
+            "jsonb_typeof(payload -> 'new_control_board_serial') = 'string' "
+            "AND trim(payload ->> 'new_control_board_serial') <> '' "
+            "AND char_length(payload ->> 'new_control_board_serial') <= 255)) "
+            f"AND payload ->> 'replacement_reason' IN ({_quoted(REPLACEMENT_REASONS)}) "
+            f"AND payload ->> 'removed_board_disposition' IN ({_quoted(DISPOSITIONS)}) "
+            "AND (NOT payload ? 'notes' OR jsonb_typeof(payload -> 'notes') = 'null' OR ("
+            "jsonb_typeof(payload -> 'notes') = 'string' "
+            "AND trim(payload ->> 'notes') <> '' "
+            "AND char_length(payload ->> 'notes') <= 4000))"
+        )
+    op.create_check_constraint(
+        "ck_repair_events_payload_shape",
+        "repair_events",
+        "(event_type = 'REPAIR_STARTED' "
+        "AND payload ?& ARRAY['reason', 'from_lifecycle', 'to_lifecycle'] "
+        f"AND payload ->> 'reason' IN ({_quoted(REPAIR_REASONS)}) "
+        "AND payload ->> 'from_lifecycle' IN ('active', 'spare') "
+        "AND payload ->> 'to_lifecycle' = 'in_repair') OR ("
+        "event_type = 'INITIAL_NOTE' "
+        "AND jsonb_typeof(payload -> 'note') = 'string' "
+        "AND trim(payload ->> 'note') <> '') OR ("
+        "event_type = 'REPAIR_COMPLETED' "
+        "AND payload ?& ARRAY['previous_miner_lifecycle', 'resulting_miner_lifecycle'] "
+        "AND payload ->> 'previous_miner_lifecycle' = 'in_repair' "
+        "AND payload ->> 'resulting_miner_lifecycle' IN ('active', 'spare') "
+        "AND (NOT payload ? 'pre_repair_lifecycle' "
+        "OR payload ->> 'pre_repair_lifecycle' IN ('active', 'spare')) "
+        "AND (NOT payload ? 'completion_summary' OR ("
+        "jsonb_typeof(payload -> 'completion_summary') = 'string' "
+        "AND trim(payload ->> 'completion_summary') <> '' "
+        "AND char_length(payload ->> 'completion_summary') <= 4000))"
+        f"{replacement_clause})",
+    )
+
+
+def upgrade() -> None:
+    connection = op.get_bind()
+    connection.exec_driver_sql(
+        """
+        DO $$
+        DECLARE conflicts TEXT;
+        BEGIN
+          WITH identities AS (
+            SELECT regexp_replace(lower(mac_address), '[^0-9a-f]', '', 'g') AS mac,
+                   miner_id
+            FROM miner_network_identities
+            WHERE length(regexp_replace(lower(mac_address), '[^0-9a-f]', '', 'g')) = 12
+            UNION ALL
+            SELECT regexp_replace(lower(current_mac), '[^0-9a-f]', '', 'g'), id
+            FROM miners
+            WHERE length(regexp_replace(lower(current_mac), '[^0-9a-f]', '', 'g')) = 12
+          ), duplicate_owners AS (
+            SELECT mac
+            FROM identities
+            GROUP BY mac
+            HAVING count(DISTINCT miner_id) > 1
+          )
+          SELECT string_agg(mac, ', ' ORDER BY mac) INTO conflicts FROM duplicate_owners;
+          IF conflicts IS NOT NULL THEN
+            RAISE EXCEPTION USING
+              MESSAGE = 'Cannot upgrade Control Board Replacement: normalized MAC values have multiple miner owners: ' || conflicts,
+              HINT = 'Correct the conflicting miner and network-identity records before upgrading; MinerOps will not transfer, merge, or delete MAC history automatically.';
+          END IF;
+
+          SELECT string_agg(mac, ', ' ORDER BY mac) INTO conflicts
+          FROM (
+            SELECT regexp_replace(lower(mac_address), '[^0-9a-f]', '', 'g') AS mac
+            FROM miner_network_identities
+            WHERE length(regexp_replace(lower(mac_address), '[^0-9a-f]', '', 'g')) = 12
+            GROUP BY regexp_replace(lower(mac_address), '[^0-9a-f]', '', 'g')
+            HAVING count(*) > 1
+          ) AS duplicate_identity_mac;
+          IF conflicts IS NOT NULL THEN
+            RAISE EXCEPTION USING
+              MESSAGE = 'Cannot upgrade Control Board Replacement: duplicate normalized network-identity MAC values: ' || conflicts,
+              HINT = 'Correct duplicate identity rows before upgrading; MinerOps will not delete or merge history automatically.';
+          END IF;
+
+          SELECT string_agg(miner_id::text, ', ' ORDER BY miner_id::text)
+          INTO conflicts
+          FROM (
+            SELECT miner_id FROM miner_network_identities
+            WHERE is_current GROUP BY miner_id HAVING count(*) > 1
+          ) AS duplicate_current;
+          IF conflicts IS NOT NULL THEN
+            RAISE EXCEPTION USING
+              MESSAGE = 'Cannot upgrade Control Board Replacement: miners have multiple current network identities: ' || conflicts,
+              HINT = 'Choose one current network identity for each listed miner before upgrading.';
+          END IF;
+        END $$;
+        """
+    )
+
+    connection.exec_driver_sql(
+        """
+        INSERT INTO permissions (key, description)
+        VALUES ('miners.replace_control_board', 'Replace miner control boards during repair')
+        ON CONFLICT (key) DO UPDATE SET description = EXCLUDED.description;
+        INSERT INTO role_permissions (role_id, permission_id)
+        SELECT roles.id, permissions.id FROM roles
+        JOIN permissions ON permissions.key = 'miners.replace_control_board'
+        WHERE roles.name IN ('Admin', 'Manager', 'Technician')
+        ON CONFLICT DO NOTHING;
+        """
+    )
+
+    op.add_column(
+        "miner_network_identities",
+        sa.Column("associated_at", sa.DateTime(timezone=True), nullable=True),
+    )
+    op.alter_column("miner_network_identities", "first_seen_at", nullable=True)
+    op.alter_column("miner_network_identities", "last_seen_at", nullable=True)
+    connection.exec_driver_sql(
+        """
+        CREATE UNIQUE INDEX uq_miner_network_identities_normalized_mac
+        ON miner_network_identities (
+          regexp_replace(lower(mac_address), '[^0-9a-f]', '', 'g')
+        )
+        WHERE length(regexp_replace(lower(mac_address), '[^0-9a-f]', '', 'g')) = 12;
+        CREATE UNIQUE INDEX uq_miner_network_identities_one_current_per_miner
+        ON miner_network_identities (miner_id) WHERE is_current;
+        CREATE UNIQUE INDEX uq_miners_current_normalized_mac
+        ON miners (regexp_replace(lower(current_mac), '[^0-9a-f]', '', 'g'))
+        WHERE length(regexp_replace(lower(current_mac), '[^0-9a-f]', '', 'g')) = 12;
+        ALTER TABLE miner_network_identities
+        ADD CONSTRAINT ck_miner_network_identities_mac_valid
+        CHECK (
+          source NOT IN ('control_board_replacement', 'legacy_projection') OR (
+            mac_address ~ '^([0-9A-F]{2}:){5}[0-9A-F]{2}$'
+            AND regexp_replace(lower(mac_address), '[^0-9a-f]', '', 'g') NOT IN ('000000000000', 'ffffffffffff')
+            AND get_byte(decode(regexp_replace(lower(mac_address), '[^0-9a-f]', '', 'g'), 'hex'), 0) %% 2 = 0
+          )
+        ) NOT VALID;
+        """
+    )
+
+    op.create_table(
+        "miner_mac_ownerships",
+        sa.Column("normalized_mac", sa.Text(), primary_key=True),
+        sa.Column(
+            "miner_id", postgresql.UUID(as_uuid=True),
+            sa.ForeignKey("miners.id", ondelete="RESTRICT"), nullable=False,
+        ),
+        sa.Column("claimed_at", sa.DateTime(timezone=True), nullable=True),
+        sa.Column(
+            "claimed_by", postgresql.UUID(as_uuid=True),
+            sa.ForeignKey("users.id", ondelete="RESTRICT"), nullable=True,
+        ),
+        sa.CheckConstraint(
+            "normalized_mac ~ '^[0-9a-f]{12}$' "
+            "AND normalized_mac NOT IN ('000000000000', 'ffffffffffff') "
+            "AND get_byte(decode(normalized_mac, 'hex'), 0) % 2 = 0",
+            name="ck_miner_mac_ownerships_valid",
+        ),
+    )
+    op.create_index("idx_miner_mac_ownerships_miner_id", "miner_mac_ownerships", ["miner_id"])
+    connection.exec_driver_sql(
+        """
+        INSERT INTO miner_mac_ownerships (normalized_mac, miner_id)
+        SELECT mac, min(miner_id::text)::uuid FROM (
+          SELECT regexp_replace(lower(mac_address), '[^0-9a-f]', '', 'g') AS mac, miner_id
+          FROM miner_network_identities
+          UNION ALL
+          SELECT regexp_replace(lower(current_mac), '[^0-9a-f]', '', 'g'), id FROM miners
+        ) AS known
+        WHERE length(mac) = 12 AND mac NOT IN ('000000000000', 'ffffffffffff')
+          AND get_byte(decode(mac, 'hex'), 0) %% 2 = 0
+        GROUP BY mac;
+        """
+    )
+
+    op.create_table(
+        "miner_control_board_installations",
+        sa.Column("id", postgresql.UUID(as_uuid=True), primary_key=True, server_default=sa.text("gen_random_uuid()")),
+        sa.Column("miner_id", postgresql.UUID(as_uuid=True), sa.ForeignKey("miners.id", ondelete="RESTRICT"), nullable=False),
+        sa.Column("record_origin", sa.Text(), nullable=False),
+        sa.Column("installed_repair_id", postgresql.UUID(as_uuid=True), sa.ForeignKey("repairs.id", ondelete="RESTRICT"), nullable=True),
+        sa.Column("removed_repair_id", postgresql.UUID(as_uuid=True), sa.ForeignKey("repairs.id", ondelete="RESTRICT"), nullable=True),
+        sa.Column("mac_address", sa.Text(), nullable=True),
+        sa.Column("normalized_mac", sa.Text(), nullable=True),
+        sa.Column("board_serial", sa.Text(), nullable=True),
+        sa.Column("board_model", sa.Text(), nullable=True),
+        sa.Column("board_revision", sa.Text(), nullable=True),
+        sa.Column("firmware_version", sa.Text(), nullable=True),
+        sa.Column("replacement_reason", sa.Text(), nullable=True),
+        sa.Column("installed_at", sa.DateTime(timezone=True), nullable=True),
+        sa.Column("installed_by", postgresql.UUID(as_uuid=True), sa.ForeignKey("users.id", ondelete="RESTRICT"), nullable=True),
+        sa.Column("removed_at", sa.DateTime(timezone=True), nullable=True),
+        sa.Column("removed_by", postgresql.UUID(as_uuid=True), sa.ForeignKey("users.id", ondelete="RESTRICT"), nullable=True),
+        sa.Column("removed_disposition", sa.Text(), nullable=True),
+        sa.Column("notes", sa.Text(), nullable=True),
+        sa.Column("created_at", sa.DateTime(timezone=True), nullable=False, server_default=sa.text("now()")),
+        sa.CheckConstraint("(mac_address IS NULL) = (normalized_mac IS NULL)", name="ck_control_board_installations_mac_pair"),
+        sa.CheckConstraint(
+            "normalized_mac IS NULL OR ("
+            "mac_address ~ '^([0-9A-F]{2}:){5}[0-9A-F]{2}$' "
+            "AND regexp_replace(lower(mac_address), '[^0-9a-f]', '', 'g') = normalized_mac "
+            "AND normalized_mac ~ '^[0-9a-f]{12}$' "
+            "AND normalized_mac NOT IN ('000000000000', 'ffffffffffff') "
+            "AND get_byte(decode(normalized_mac, 'hex'), 0) % 2 = 0)",
+            name="ck_control_board_installations_mac_normalized",
+        ),
+        sa.CheckConstraint("board_serial IS NULL OR (trim(board_serial) <> '' AND char_length(board_serial) <= 255)", name="ck_control_board_installations_serial"),
+        sa.CheckConstraint("board_model IS NULL OR (trim(board_model) <> '' AND char_length(board_model) <= 255)", name="ck_control_board_installations_model"),
+        sa.CheckConstraint("board_revision IS NULL OR (trim(board_revision) <> '' AND char_length(board_revision) <= 255)", name="ck_control_board_installations_revision"),
+        sa.CheckConstraint("firmware_version IS NULL OR (trim(firmware_version) <> '' AND char_length(firmware_version) <= 255)", name="ck_control_board_installations_firmware"),
+        sa.CheckConstraint(f"replacement_reason IS NULL OR replacement_reason IN ({_quoted(REPLACEMENT_REASONS)})", name="ck_control_board_installations_reason"),
+        sa.CheckConstraint(f"removed_disposition IS NULL OR removed_disposition IN ({_quoted(DISPOSITIONS)})", name="ck_control_board_installations_disposition"),
+        sa.CheckConstraint("notes IS NULL OR (trim(notes) <> '' AND char_length(notes) <= 4000)", name="ck_control_board_installations_notes"),
+        sa.CheckConstraint("(removed_at IS NULL AND removed_by IS NULL AND removed_repair_id IS NULL AND removed_disposition IS NULL) OR (removed_at IS NOT NULL AND removed_by IS NOT NULL AND removed_repair_id IS NOT NULL AND removed_disposition IS NOT NULL)", name="ck_control_board_installations_removed_state"),
+        sa.CheckConstraint("installed_at IS NULL OR removed_at IS NULL OR removed_at >= installed_at", name="ck_control_board_installations_chronology"),
+        sa.CheckConstraint(
+            "(record_origin = 'legacy_projection' AND installed_repair_id IS NULL "
+            "AND installed_at IS NULL AND installed_by IS NULL "
+            "AND replacement_reason IS NULL) OR "
+            "(record_origin = 'replacement' AND installed_repair_id IS NOT NULL "
+            "AND installed_at IS NOT NULL AND installed_by IS NOT NULL "
+            "AND replacement_reason IS NOT NULL)",
+            name="ck_control_board_installations_install_state",
+        ),
+    )
+    op.create_index("uq_control_board_installations_current_miner", "miner_control_board_installations", ["miner_id"], unique=True, postgresql_where=sa.text("removed_at IS NULL"))
+    op.create_index("uq_control_board_installations_current_mac", "miner_control_board_installations", ["normalized_mac"], unique=True, postgresql_where=sa.text("removed_at IS NULL AND normalized_mac IS NOT NULL"))
+    op.create_index("idx_control_board_installations_miner_history", "miner_control_board_installations", ["miner_id", "installed_at", "created_at", "id"])
+    op.create_index("idx_control_board_installations_mac_history", "miner_control_board_installations", ["normalized_mac", "created_at", "id"])
+    op.create_index("idx_control_board_installations_installed_repair", "miner_control_board_installations", ["installed_repair_id"])
+    op.create_index("idx_control_board_installations_removed_repair", "miner_control_board_installations", ["removed_repair_id"])
+
+    connection.exec_driver_sql(
+        """
+        CREATE FUNCTION minerops_claim_mac_owner() RETURNS trigger LANGUAGE plpgsql AS $$
+        DECLARE mac text; existing_owner uuid; target_owner uuid; row_data jsonb;
+        BEGIN
+          row_data := to_jsonb(NEW);
+          mac := regexp_replace(lower(CASE WHEN TG_TABLE_NAME = 'miners' THEN row_data ->> 'current_mac' ELSE row_data ->> 'mac_address' END), '[^0-9a-f]', '', 'g');
+          target_owner := (CASE WHEN TG_TABLE_NAME = 'miners' THEN row_data ->> 'id' ELSE row_data ->> 'miner_id' END)::uuid;
+          IF mac IS NULL OR length(mac) <> 12 OR mac IN ('000000000000', 'ffffffffffff') OR get_byte(decode(mac, 'hex'), 0) %% 2 <> 0 THEN RETURN NEW; END IF;
+          INSERT INTO miner_mac_ownerships (normalized_mac, miner_id, claimed_at)
+          VALUES (mac, target_owner, now())
+          ON CONFLICT (normalized_mac) DO NOTHING;
+          SELECT miner_id INTO existing_owner FROM miner_mac_ownerships WHERE normalized_mac = mac FOR UPDATE;
+          IF existing_owner <> (target_owner) THEN
+            RAISE EXCEPTION 'MAC %% is historically owned by miner %%', mac, existing_owner USING ERRCODE = '23505', CONSTRAINT = 'uq_miner_mac_ownerships_owner';
+          END IF;
+          RETURN NEW;
+        END $$;
+        CREATE TRIGGER trg_miners_claim_mac_owner AFTER INSERT OR UPDATE OF current_mac ON miners FOR EACH ROW EXECUTE FUNCTION minerops_claim_mac_owner();
+        CREATE TRIGGER trg_network_identities_claim_mac_owner BEFORE INSERT OR UPDATE OF mac_address, miner_id ON miner_network_identities FOR EACH ROW EXECUTE FUNCTION minerops_claim_mac_owner();
+        CREATE FUNCTION minerops_protect_mac_ownership() RETURNS trigger LANGUAGE plpgsql AS $$
+        BEGIN
+          RAISE EXCEPTION 'Historical MAC ownership is immutable; use an explicit transfer workflow';
+        END $$;
+        CREATE TRIGGER trg_protect_mac_ownership BEFORE UPDATE OR DELETE ON miner_mac_ownerships FOR EACH ROW EXECUTE FUNCTION minerops_protect_mac_ownership();
+
+
+        CREATE FUNCTION minerops_protect_network_identity_history() RETURNS trigger LANGUAGE plpgsql AS $$
+        BEGIN
+          IF TG_OP = 'DELETE' THEN
+            RAISE EXCEPTION 'Network identity history is immutable';
+          END IF;
+          IF NEW.miner_id <> OLD.miner_id
+             OR regexp_replace(lower(NEW.mac_address), '[^0-9a-f]', '', 'g')
+                <> regexp_replace(lower(OLD.mac_address), '[^0-9a-f]', '', 'g') THEN
+            RAISE EXCEPTION 'Network identity owner and normalized MAC are immutable';
+          END IF;
+          RETURN NEW;
+        END $$;
+        CREATE TRIGGER trg_protect_network_identity_history BEFORE UPDATE OF miner_id, mac_address OR DELETE ON miner_network_identities FOR EACH ROW EXECUTE FUNCTION minerops_protect_network_identity_history();
+
+
+        CREATE FUNCTION minerops_check_current_board_projection() RETURNS trigger LANGUAGE plpgsql AS $$
+        DECLARE target_miner uuid; mismatch boolean; row_data jsonb;
+        BEGIN
+          IF TG_OP = 'DELETE' THEN
+            row_data := to_jsonb(OLD);
+          ELSE
+            row_data := to_jsonb(NEW);
+          END IF;
+          target_miner := (CASE WHEN TG_TABLE_NAME = 'miners' THEN row_data ->> 'id' ELSE row_data ->> 'miner_id' END)::uuid;
+          SELECT EXISTS (
+            SELECT 1 FROM miner_control_board_installations
+            WHERE miner_id = target_miner
+          ) AND NOT EXISTS (
+            SELECT 1
+            FROM miner_control_board_installations board
+            JOIN miners miner ON miner.id = board.miner_id
+            JOIN miner_network_identities identity
+              ON identity.miner_id = board.miner_id AND identity.is_current
+            WHERE board.miner_id = target_miner AND board.removed_at IS NULL
+              AND regexp_replace(lower(COALESCE(miner.current_mac, '')), '[^0-9a-f]', '', 'g') = COALESCE(board.normalized_mac, '')
+              AND miner.control_board_sn IS NOT DISTINCT FROM board.board_serial
+              AND regexp_replace(lower(identity.mac_address), '[^0-9a-f]', '', 'g') = COALESCE(board.normalized_mac, '')
+          ) INTO mismatch;
+          IF mismatch THEN RAISE EXCEPTION 'Current control-board projection does not match installation history for miner %%', target_miner USING ERRCODE = '23514', CONSTRAINT = 'ck_current_control_board_projection'; END IF;
+          RETURN NULL;
+        END $$;
+        CREATE CONSTRAINT TRIGGER trg_miners_check_current_board_projection AFTER INSERT OR UPDATE ON miners DEFERRABLE INITIALLY DEFERRED FOR EACH ROW EXECUTE FUNCTION minerops_check_current_board_projection();
+        CREATE CONSTRAINT TRIGGER trg_installations_check_current_board_projection AFTER INSERT OR UPDATE OR DELETE ON miner_control_board_installations DEFERRABLE INITIALLY DEFERRED FOR EACH ROW EXECUTE FUNCTION minerops_check_current_board_projection();
+        CREATE CONSTRAINT TRIGGER trg_identities_check_current_board_projection AFTER INSERT OR UPDATE OR DELETE ON miner_network_identities DEFERRABLE INITIALLY DEFERRED FOR EACH ROW EXECUTE FUNCTION minerops_check_current_board_projection();
+
+        CREATE FUNCTION minerops_protect_control_board_history() RETURNS trigger LANGUAGE plpgsql AS $$
+        BEGIN
+          IF TG_OP = 'DELETE' THEN RAISE EXCEPTION 'Control-board installation history is immutable'; END IF;
+          IF OLD.removed_at IS NOT NULL THEN RAISE EXCEPTION 'Removed control-board installation history is immutable'; END IF;
+          IF NEW.id <> OLD.id OR NEW.miner_id <> OLD.miner_id OR NEW.record_origin <> OLD.record_origin OR NEW.installed_repair_id IS DISTINCT FROM OLD.installed_repair_id OR NEW.mac_address IS DISTINCT FROM OLD.mac_address OR NEW.normalized_mac IS DISTINCT FROM OLD.normalized_mac OR NEW.board_serial IS DISTINCT FROM OLD.board_serial OR NEW.board_model IS DISTINCT FROM OLD.board_model OR NEW.board_revision IS DISTINCT FROM OLD.board_revision OR NEW.firmware_version IS DISTINCT FROM OLD.firmware_version OR NEW.replacement_reason IS DISTINCT FROM OLD.replacement_reason OR NEW.installed_at IS DISTINCT FROM OLD.installed_at OR NEW.installed_by IS DISTINCT FROM OLD.installed_by OR NEW.notes IS DISTINCT FROM OLD.notes OR NEW.created_at <> OLD.created_at THEN
+            RAISE EXCEPTION 'Control-board installation identity is immutable';
+          END IF;
+          RETURN NEW;
+        END $$;
+        CREATE TRIGGER trg_protect_control_board_history BEFORE UPDATE OR DELETE ON miner_control_board_installations FOR EACH ROW EXECUTE FUNCTION minerops_protect_control_board_history();
+        """
+    )
+
+    op.drop_constraint("ck_repair_events_payload_shape", "repair_events", type_="check")
+    op.drop_constraint("ck_repair_events_type", "repair_events", type_="check")
+    _create_event_constraints(True)
+
+
+def downgrade() -> None:
+    connection = op.get_bind()
+    connection.exec_driver_sql(
+        """
+        DO $$ DECLARE history_count bigint; BEGIN
+          SELECT count(*) INTO history_count FROM miner_control_board_installations;
+          history_count := history_count + (SELECT count(*) FROM repair_events WHERE event_type = 'CONTROL_BOARD_REPLACED');
+          IF history_count > 0 THEN
+            RAISE EXCEPTION USING MESSAGE = format('Cannot downgrade Control Board Replacement: %s authoritative installation records or events would be destroyed', history_count), HINT = 'Preserve or explicitly migrate control-board history before downgrading; MinerOps will not discard or invent component, MAC, actor, or timestamp history.';
+          END IF;
+          IF EXISTS (SELECT 1 FROM miner_network_identities WHERE first_seen_at IS NULL OR last_seen_at IS NULL) THEN
+            RAISE EXCEPTION USING MESSAGE = 'Cannot downgrade Control Board Replacement: network identities contain unknown observation timestamps', HINT = 'Do not invent discovery timestamps; preserve or explicitly migrate these associations before downgrading.';
+          END IF;
+          IF EXISTS (SELECT 1 FROM miner_network_identities WHERE associated_at IS NOT NULL)
+             OR EXISTS (SELECT 1 FROM miner_mac_ownerships WHERE claimed_at IS NOT NULL) THEN
+            RAISE EXCEPTION USING MESSAGE = 'Cannot downgrade Control Board Replacement: authoritative MAC association or ownership history would be destroyed', HINT = 'Preserve or explicitly migrate MAC association and ownership history before downgrading.';
+          END IF;
+        END $$;
+        """
+    )
+    op.drop_constraint("ck_repair_events_payload_shape", "repair_events", type_="check")
+    op.drop_constraint("ck_repair_events_type", "repair_events", type_="check")
+    _create_event_constraints(False)
+    connection.exec_driver_sql(
+        """
+        DROP TRIGGER trg_protect_control_board_history ON miner_control_board_installations;
+        DROP FUNCTION minerops_protect_control_board_history();
+        DROP TRIGGER trg_installations_check_current_board_projection ON miner_control_board_installations;
+        DROP TRIGGER trg_identities_check_current_board_projection ON miner_network_identities;
+        DROP TRIGGER trg_miners_check_current_board_projection ON miners;
+        DROP FUNCTION minerops_check_current_board_projection();
+        DROP TRIGGER trg_protect_mac_ownership ON miner_mac_ownerships;
+        DROP FUNCTION minerops_protect_mac_ownership();
+        DROP TRIGGER trg_protect_network_identity_history ON miner_network_identities;
+        DROP FUNCTION minerops_protect_network_identity_history();
+        DROP TRIGGER trg_network_identities_claim_mac_owner ON miner_network_identities;
+        DROP TRIGGER trg_miners_claim_mac_owner ON miners;
+        DROP FUNCTION minerops_claim_mac_owner();
+        """
+    )
+    op.drop_table("miner_control_board_installations")
+    op.drop_index("idx_miner_mac_ownerships_miner_id", table_name="miner_mac_ownerships")
+    op.drop_table("miner_mac_ownerships")
+    op.drop_constraint("ck_miner_network_identities_mac_valid", "miner_network_identities", type_="check")
+    op.drop_index("uq_miners_current_normalized_mac", table_name="miners")
+    op.drop_index("uq_miner_network_identities_one_current_per_miner", table_name="miner_network_identities")
+    op.drop_index("uq_miner_network_identities_normalized_mac", table_name="miner_network_identities")
+    op.alter_column("miner_network_identities", "last_seen_at", nullable=False)
+    op.alter_column("miner_network_identities", "first_seen_at", nullable=False)
+    op.drop_column("miner_network_identities", "associated_at")
+    connection.exec_driver_sql("DELETE FROM role_permissions WHERE permission_id = (SELECT id FROM permissions WHERE key = 'miners.replace_control_board')")
+    connection.exec_driver_sql("DELETE FROM permissions WHERE key = 'miners.replace_control_board'")

backend/alembic/versions/0014_repair_parts_tracking.py

@@ -0,0 +1,590 @@
+"""add repair parts tracking
+
+Revision ID: 0014_repair_parts_tracking
+Revises: 0013_control_board_replacement
+Create Date: 2026-08-02
+"""
+
+from typing import Sequence, Union
+
+import sqlalchemy as sa
+from alembic import op
+from sqlalchemy.dialects import postgresql
+
+
+revision: str = "0014_repair_parts_tracking"
+down_revision: Union[str, None] = "0013_control_board_replacement"
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+COMPONENT_TYPES = ("control_board", "hashboard", "power_supply", "fan")
+CONSUMABLE_UNITS = ("each", "gram", "millilitre", "metre", "centimetre")
+REPAIR_REASONS = (
+    "HARDWARE_FAILURE", "LOW_HASHRATE", "CONTROL_BOARD", "HASHBOARD",
+    "PSU", "FAN", "OVERHEATING", "NETWORKING",
+    "PREVENTIVE_MAINTENANCE", "INSPECTION", "OTHER",
+)
+REPLACEMENT_REASONS = (
+    "failed", "upgrade", "diagnostic_swap", "preventive_maintenance",
+    "temporary_donor", "unknown",
+)
+DISPOSITIONS = (
+    "repair_inventory", "sent_for_repair", "scrapped",
+    "retained_for_diagnosis", "returned_to_vendor", "unknown",
+)
+
+
+def _quoted(values: Sequence[str]) -> str:
+    return ", ".join(f"'{value}'" for value in values)
+
+
+def _create_event_constraints(include_parts: bool) -> None:
+    event_types = [
+        "REPAIR_STARTED",
+        "INITIAL_NOTE",
+        "REPAIR_COMPLETED",
+        "CONTROL_BOARD_REPLACED",
+    ]
+    if include_parts:
+        event_types.extend(("REPAIR_PART_RECORDED", "REPAIR_PART_VOIDED"))
+
+    op.create_check_constraint(
+        "ck_repair_events_type",
+        "repair_events",
+        f"event_type IN ({_quoted(event_types)})",
+    )
+
+    parts_clause = ""
+    if include_parts:
+        parts_clause = (
+            ") OR (event_type = 'REPAIR_PART_RECORDED' "
+            "AND payload ?& ARRAY['repair_part_id', 'entry_kind', 'notes'] "
+            "AND payload ->> 'repair_part_id' ~ "
+            "'^[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-5][0-9a-fA-F]{3}-"
+            "[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}$' "
+            "AND (jsonb_typeof(payload -> 'notes') = 'null' OR ("
+            "jsonb_typeof(payload -> 'notes') = 'string' "
+            "AND trim(payload ->> 'notes') <> '' "
+            "AND char_length(payload ->> 'notes') <= 4000)) "
+            "AND ((payload ->> 'entry_kind' = 'consumable' "
+            "AND payload ?& ARRAY['description', 'quantity', 'unit'] "
+            "AND NOT payload ? 'component_id' "
+            "AND jsonb_typeof(payload -> 'description') = 'string' "
+            "AND trim(payload ->> 'description') <> '' "
+            "AND char_length(payload ->> 'description') <= 255 "
+            "AND jsonb_typeof(payload -> 'quantity') = 'string' "
+            "AND payload ->> 'quantity' ~ '^[0-9]{1,9}(\\.[0-9]{1,3})?$' "
+            "AND (payload ->> 'quantity')::numeric > 0 "
+            f"AND payload ->> 'unit' IN ({_quoted(CONSUMABLE_UNITS)}) "
+            "AND (payload ->> 'unit' <> 'each' OR "
+            "(payload ->> 'quantity')::numeric = "
+            "trunc((payload ->> 'quantity')::numeric))) OR ("
+            "payload ->> 'entry_kind' = 'tracked_component' "
+            "AND payload ?& ARRAY['component_id', 'component_type', "
+            "'component_asset_id', 'component_manufacturer', "
+            "'component_model', 'component_manufacturer_serial'] "
+            "AND NOT payload ? 'description' "
+            "AND NOT payload ? 'quantity' "
+            "AND NOT payload ? 'unit' "
+            "AND payload ->> 'component_id' ~ "
+            "'^[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-5][0-9a-fA-F]{3}-"
+            "[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}$' "
+            f"AND payload ->> 'component_type' IN ({_quoted(COMPONENT_TYPES)}) "
+            "AND jsonb_typeof(payload -> 'component_asset_id') IN ('string', 'null') "
+            "AND jsonb_typeof(payload -> 'component_manufacturer') IN ('string', 'null') "
+            "AND jsonb_typeof(payload -> 'component_model') IN ('string', 'null') "
+            "AND jsonb_typeof(payload -> 'component_manufacturer_serial') "
+            "IN ('string', 'null'))))"
+            " OR (event_type = 'REPAIR_PART_VOIDED' "
+            "AND payload ?& ARRAY['repair_part_id', 'reason'] "
+            "AND payload ->> 'repair_part_id' ~ "
+            "'^[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-5][0-9a-fA-F]{3}-"
+            "[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}$' "
+            "AND jsonb_typeof(payload -> 'reason') = 'string' "
+            "AND trim(payload ->> 'reason') <> '' "
+            "AND char_length(payload ->> 'reason') <= 1000"
+        )
+
+    op.create_check_constraint(
+        "ck_repair_events_payload_shape",
+        "repair_events",
+        "(event_type = 'REPAIR_STARTED' "
+        "AND payload ?& ARRAY['reason', 'from_lifecycle', 'to_lifecycle'] "
+        f"AND payload ->> 'reason' IN ({_quoted(REPAIR_REASONS)}) "
+        "AND payload ->> 'from_lifecycle' IN ('active', 'spare') "
+        "AND payload ->> 'to_lifecycle' = 'in_repair') OR ("
+        "event_type = 'INITIAL_NOTE' "
+        "AND jsonb_typeof(payload -> 'note') = 'string' "
+        "AND trim(payload ->> 'note') <> '') OR ("
+        "event_type = 'REPAIR_COMPLETED' "
+        "AND payload ?& ARRAY['previous_miner_lifecycle', 'resulting_miner_lifecycle'] "
+        "AND payload ->> 'previous_miner_lifecycle' = 'in_repair' "
+        "AND payload ->> 'resulting_miner_lifecycle' IN ('active', 'spare') "
+        "AND (NOT payload ? 'pre_repair_lifecycle' "
+        "OR payload ->> 'pre_repair_lifecycle' IN ('active', 'spare')) "
+        "AND (NOT payload ? 'completion_summary' OR ("
+        "jsonb_typeof(payload -> 'completion_summary') = 'string' "
+        "AND trim(payload ->> 'completion_summary') <> '' "
+        "AND char_length(payload ->> 'completion_summary') <= 4000))) OR ("
+        "event_type = 'CONTROL_BOARD_REPLACED' "
+        "AND payload ?& ARRAY['old_mac_address', 'new_mac_address', "
+        "'old_control_board_serial', 'new_control_board_serial', "
+        "'replacement_reason', 'removed_board_disposition'] "
+        "AND jsonb_typeof(payload -> 'old_mac_address') IN ('string', 'null') "
+        "AND jsonb_typeof(payload -> 'new_mac_address') = 'string' "
+        "AND payload ->> 'new_mac_address' ~ '^([0-9A-F]{2}:){5}[0-9A-F]{2}$' "
+        "AND regexp_replace(lower(payload ->> 'new_mac_address'), '[^0-9a-f]', '', 'g') "
+        "NOT IN ('000000000000', 'ffffffffffff') "
+        "AND get_byte(decode(regexp_replace(lower(payload ->> 'new_mac_address'), "
+        "'[^0-9a-f]', '', 'g'), 'hex'), 0) % 2 = 0 "
+        "AND (jsonb_typeof(payload -> 'old_control_board_serial') = 'null' OR ("
+        "jsonb_typeof(payload -> 'old_control_board_serial') = 'string' "
+        "AND trim(payload ->> 'old_control_board_serial') <> '' "
+        "AND char_length(payload ->> 'old_control_board_serial') <= 255)) "
+        "AND (jsonb_typeof(payload -> 'new_control_board_serial') = 'null' OR ("
+        "jsonb_typeof(payload -> 'new_control_board_serial') = 'string' "
+        "AND trim(payload ->> 'new_control_board_serial') <> '' "
+        "AND char_length(payload ->> 'new_control_board_serial') <= 255)) "
+        f"AND payload ->> 'replacement_reason' IN ({_quoted(REPLACEMENT_REASONS)}) "
+        f"AND payload ->> 'removed_board_disposition' IN ({_quoted(DISPOSITIONS)}) "
+        "AND (NOT payload ? 'notes' OR jsonb_typeof(payload -> 'notes') = 'null' OR ("
+        "jsonb_typeof(payload -> 'notes') = 'string' "
+        "AND trim(payload ->> 'notes') <> '' "
+        "AND char_length(payload ->> 'notes') <= 4000))"
+        f"{parts_clause})",
+    )
+
+
+def upgrade() -> None:
+    connection = op.get_bind()
+
+    connection.exec_driver_sql(
+        """
+        INSERT INTO permissions (key, description)
+        VALUES
+          ('components.read', 'View tracked component identity'),
+          ('components.create', 'Register tracked component identity'),
+          ('repairs.parts.manage', 'Record and void repair-part usage')
+        ON CONFLICT (key) DO UPDATE SET description = EXCLUDED.description;
+
+        INSERT INTO role_permissions (role_id, permission_id)
+        SELECT roles.id, permissions.id
+        FROM roles
+        JOIN permissions ON permissions.key IN (
+          'components.read', 'components.create', 'repairs.parts.manage'
+        )
+        WHERE roles.name IN ('Admin', 'Manager', 'Technician')
+        ON CONFLICT DO NOTHING;
+
+        INSERT INTO role_permissions (role_id, permission_id)
+        SELECT roles.id, permissions.id
+        FROM roles
+        JOIN permissions ON permissions.key = 'components.read'
+        WHERE roles.name = 'Read Only'
+        ON CONFLICT DO NOTHING;
+        """
+    )
+
+    op.create_table(
+        "components",
+        sa.Column(
+            "id", postgresql.UUID(as_uuid=True), primary_key=True,
+            server_default=sa.text("gen_random_uuid()"),
+        ),
+        sa.Column("component_type", sa.Text(), nullable=False),
+        sa.Column("asset_id", sa.Text(), nullable=True),
+        sa.Column("manufacturer", sa.Text(), nullable=True),
+        sa.Column("model", sa.Text(), nullable=True),
+        sa.Column("manufacturer_serial", sa.Text(), nullable=True),
+        sa.Column(
+            "created_at", sa.DateTime(timezone=True), nullable=False,
+            server_default=sa.text("now()"),
+        ),
+        sa.Column(
+            "created_by", postgresql.UUID(as_uuid=True),
+            sa.ForeignKey("users.id", ondelete="RESTRICT"), nullable=False,
+        ),
+        sa.CheckConstraint(
+            f"component_type IN ({_quoted(COMPONENT_TYPES)})",
+            name="ck_components_type",
+        ),
+        sa.CheckConstraint(
+            "asset_id IS NULL OR (trim(asset_id) <> '' "
+            "AND asset_id = trim(asset_id) AND char_length(asset_id) <= 255)",
+            name="ck_components_asset_id",
+        ),
+        sa.CheckConstraint(
+            "manufacturer IS NULL OR (trim(manufacturer) <> '' "
+            "AND manufacturer = trim(manufacturer) "
+            "AND char_length(manufacturer) <= 255)",
+            name="ck_components_manufacturer",
+        ),
+        sa.CheckConstraint(
+            "model IS NULL OR (trim(model) <> '' AND model = trim(model) "
+            "AND char_length(model) <= 255)",
+            name="ck_components_model",
+        ),
+        sa.CheckConstraint(
+            "manufacturer_serial IS NULL OR (trim(manufacturer_serial) <> '' "
+            "AND manufacturer_serial = trim(manufacturer_serial) "
+            "AND char_length(manufacturer_serial) <= 255)",
+            name="ck_components_manufacturer_serial",
+        ),
+    )
+    op.create_index("idx_components_created_by", "components", ["created_by"])
+    op.create_index("idx_components_type", "components", ["component_type"])
+    op.create_index(
+        "uq_components_normalized_asset_id",
+        "components",
+        [sa.text("lower(trim(asset_id))")],
+        unique=True,
+        postgresql_where=sa.text("asset_id IS NOT NULL"),
+    )
+
+    op.create_table(
+        "repair_parts",
+        sa.Column(
+            "id", postgresql.UUID(as_uuid=True), primary_key=True,
+            server_default=sa.text("gen_random_uuid()"),
+        ),
+        sa.Column(
+            "repair_id", postgresql.UUID(as_uuid=True),
+            sa.ForeignKey("repairs.id", ondelete="RESTRICT"), nullable=False,
+        ),
+        sa.Column("consumable_description", sa.Text(), nullable=True),
+        sa.Column("quantity", sa.Numeric(precision=12, scale=3), nullable=True),
+        sa.Column("unit", sa.Text(), nullable=True),
+        sa.Column(
+            "component_id", postgresql.UUID(as_uuid=True),
+            sa.ForeignKey("components.id", ondelete="RESTRICT"), nullable=True,
+        ),
+        sa.Column("component_type_snapshot", sa.Text(), nullable=True),
+        sa.Column("component_asset_id_snapshot", sa.Text(), nullable=True),
+        sa.Column("component_manufacturer_snapshot", sa.Text(), nullable=True),
+        sa.Column("component_model_snapshot", sa.Text(), nullable=True),
+        sa.Column("component_manufacturer_serial_snapshot", sa.Text(), nullable=True),
+        sa.Column("notes", sa.Text(), nullable=True),
+        sa.Column(
+            "recorded_by", postgresql.UUID(as_uuid=True),
+            sa.ForeignKey("users.id", ondelete="RESTRICT"), nullable=False,
+        ),
+        sa.Column(
+            "recorded_at", sa.DateTime(timezone=True), nullable=False,
+            server_default=sa.text("now()"),
+        ),
+        sa.Column(
+            "recorded_event_id", postgresql.UUID(as_uuid=True),
+            sa.ForeignKey("repair_events.id", ondelete="RESTRICT"),
+            nullable=False,
+        ),
+        sa.Column(
+            "voided_by", postgresql.UUID(as_uuid=True),
+            sa.ForeignKey("users.id", ondelete="RESTRICT"), nullable=True,
+        ),
+        sa.Column("voided_at", sa.DateTime(timezone=True), nullable=True),
+        sa.Column("void_reason", sa.Text(), nullable=True),
+        sa.Column(
+            "void_event_id", postgresql.UUID(as_uuid=True),
+            sa.ForeignKey("repair_events.id", ondelete="RESTRICT"),
+            nullable=True,
+        ),
+        sa.CheckConstraint(
+            "((consumable_description IS NOT NULL AND quantity IS NOT NULL "
+            "AND unit IS NOT NULL AND component_id IS NULL "
+            "AND component_type_snapshot IS NULL "
+            "AND component_asset_id_snapshot IS NULL "
+            "AND component_manufacturer_snapshot IS NULL "
+            "AND component_model_snapshot IS NULL "
+            "AND component_manufacturer_serial_snapshot IS NULL) OR "
+            "(consumable_description IS NULL AND quantity IS NULL "
+            "AND unit IS NULL AND component_id IS NOT NULL "
+            "AND component_type_snapshot IS NOT NULL))",
+            name="ck_repair_parts_entry_xor",
+        ),
+        sa.CheckConstraint(
+            "quantity IS NULL OR quantity > 0",
+            name="ck_repair_parts_quantity_positive",
+        ),
+        sa.CheckConstraint(
+            "unit IS NULL OR unit <> 'each' OR quantity = trunc(quantity)",
+            name="ck_repair_parts_each_whole",
+        ),
+        sa.CheckConstraint(
+            f"unit IS NULL OR unit IN ({_quoted(CONSUMABLE_UNITS)})",
+            name="ck_repair_parts_unit",
+        ),
+        sa.CheckConstraint(
+            f"component_type_snapshot IS NULL OR "
+            f"component_type_snapshot IN ({_quoted(COMPONENT_TYPES)})",
+            name="ck_repair_parts_component_type",
+        ),
+        sa.CheckConstraint(
+            "consumable_description IS NULL OR ("
+            "consumable_description = trim(consumable_description) "
+            "AND trim(consumable_description) <> '' "
+            "AND char_length(consumable_description) <= 255)",
+            name="ck_repair_parts_description",
+        ),
+        sa.CheckConstraint(
+            "component_asset_id_snapshot IS NULL OR ("
+            "component_asset_id_snapshot = trim(component_asset_id_snapshot) "
+            "AND trim(component_asset_id_snapshot) <> '' "
+            "AND char_length(component_asset_id_snapshot) <= 255)",
+            name="ck_repair_parts_asset_snapshot",
+        ),
+        sa.CheckConstraint(
+            "component_manufacturer_snapshot IS NULL OR ("
+            "component_manufacturer_snapshot = trim(component_manufacturer_snapshot) "
+            "AND trim(component_manufacturer_snapshot) <> '' "
+            "AND char_length(component_manufacturer_snapshot) <= 255)",
+            name="ck_repair_parts_manufacturer_snapshot",
+        ),
+        sa.CheckConstraint(
+            "component_model_snapshot IS NULL OR ("
+            "component_model_snapshot = trim(component_model_snapshot) "
+            "AND trim(component_model_snapshot) <> '' "
+            "AND char_length(component_model_snapshot) <= 255)",
+            name="ck_repair_parts_model_snapshot",
+        ),
+        sa.CheckConstraint(
+            "component_manufacturer_serial_snapshot IS NULL OR ("
+            "component_manufacturer_serial_snapshot = "
+            "trim(component_manufacturer_serial_snapshot) "
+            "AND trim(component_manufacturer_serial_snapshot) <> '' "
+            "AND char_length(component_manufacturer_serial_snapshot) <= 255)",
+            name="ck_repair_parts_serial_snapshot",
+        ),
+        sa.CheckConstraint(
+            "notes IS NULL OR (notes = trim(notes) AND trim(notes) <> '' "
+            "AND char_length(notes) <= 4000)",
+            name="ck_repair_parts_notes",
+        ),
+        sa.CheckConstraint(
+            "(voided_by IS NULL AND voided_at IS NULL AND void_reason IS NULL "
+            "AND void_event_id IS NULL) OR "
+            "(voided_by IS NOT NULL AND voided_at IS NOT NULL "
+            "AND void_reason IS NOT NULL AND void_event_id IS NOT NULL)",
+            name="ck_repair_parts_void_state",
+        ),
+        sa.CheckConstraint(
+            "void_reason IS NULL OR (void_reason = trim(void_reason) "
+            "AND trim(void_reason) <> '' AND char_length(void_reason) <= 1000)",
+            name="ck_repair_parts_void_reason",
+        ),
+        sa.CheckConstraint(
+            "voided_at IS NULL OR voided_at >= recorded_at",
+            name="ck_repair_parts_void_chronology",
+        ),
+    )
+    op.create_index(
+        "idx_repair_parts_repair",
+        "repair_parts",
+        ["repair_id", "recorded_event_id", "id"],
+    )
+    op.create_index("idx_repair_parts_component", "repair_parts", ["component_id"])
+    op.create_index("idx_repair_parts_recorded_by", "repair_parts", ["recorded_by"])
+    op.create_index("idx_repair_parts_voided_by", "repair_parts", ["voided_by"])
+    op.create_index(
+        "uq_repair_parts_recorded_event",
+        "repair_parts",
+        ["recorded_event_id"],
+        unique=True,
+    )
+    op.create_index(
+        "uq_repair_parts_void_event",
+        "repair_parts",
+        ["void_event_id"],
+        unique=True,
+        postgresql_where=sa.text("void_event_id IS NOT NULL"),
+    )
+
+    op.drop_constraint("ck_repair_events_payload_shape", "repair_events", type_="check")
+    op.drop_constraint("ck_repair_events_type", "repair_events", type_="check")
+    _create_event_constraints(True)
+
+    connection.exec_driver_sql(
+        """
+        CREATE FUNCTION minerops_protect_component_identity()
+        RETURNS trigger LANGUAGE plpgsql AS $$
+        BEGIN
+          IF TG_OP = 'DELETE' THEN
+            RAISE EXCEPTION 'Durable component identity cannot be deleted';
+          END IF;
+          IF NEW.id <> OLD.id
+             OR NEW.component_type <> OLD.component_type
+             OR NEW.created_at <> OLD.created_at
+             OR NEW.created_by <> OLD.created_by THEN
+            RAISE EXCEPTION 'Component identity, type, and creation provenance are immutable';
+          END IF;
+          RETURN NEW;
+        END $$;
+        CREATE TRIGGER trg_protect_component_identity
+        BEFORE UPDATE OR DELETE ON components
+        FOR EACH ROW EXECUTE FUNCTION minerops_protect_component_identity();
+
+        CREATE FUNCTION minerops_protect_repair_event_history()
+        RETURNS trigger LANGUAGE plpgsql AS $$
+        BEGIN
+          RAISE EXCEPTION 'Repair event history is immutable';
+        END $$;
+        CREATE TRIGGER trg_protect_repair_event_history
+        BEFORE UPDATE OR DELETE ON repair_events
+        FOR EACH ROW EXECUTE FUNCTION minerops_protect_repair_event_history();
+
+        CREATE FUNCTION minerops_protect_repair_part_history()
+        RETURNS trigger LANGUAGE plpgsql AS $$
+        BEGIN
+          IF TG_OP = 'DELETE' THEN
+            RAISE EXCEPTION 'Repair-part history is immutable';
+          END IF;
+          IF NEW.id <> OLD.id
+             OR NEW.repair_id <> OLD.repair_id
+             OR NEW.consumable_description IS DISTINCT FROM OLD.consumable_description
+             OR NEW.quantity IS DISTINCT FROM OLD.quantity
+             OR NEW.unit IS DISTINCT FROM OLD.unit
+             OR NEW.component_id IS DISTINCT FROM OLD.component_id
+             OR NEW.component_type_snapshot IS DISTINCT FROM OLD.component_type_snapshot
+             OR NEW.component_asset_id_snapshot IS DISTINCT FROM OLD.component_asset_id_snapshot
+             OR NEW.component_manufacturer_snapshot IS DISTINCT FROM OLD.component_manufacturer_snapshot
+             OR NEW.component_model_snapshot IS DISTINCT FROM OLD.component_model_snapshot
+             OR NEW.component_manufacturer_serial_snapshot IS DISTINCT FROM OLD.component_manufacturer_serial_snapshot
+             OR NEW.notes IS DISTINCT FROM OLD.notes
+             OR NEW.recorded_by <> OLD.recorded_by
+             OR NEW.recorded_at <> OLD.recorded_at
+             OR NEW.recorded_event_id <> OLD.recorded_event_id THEN
+            RAISE EXCEPTION 'Original repair-part fields are immutable';
+          END IF;
+          IF OLD.voided_by IS NOT NULL OR OLD.voided_at IS NOT NULL
+             OR OLD.void_reason IS NOT NULL OR OLD.void_event_id IS NOT NULL THEN
+            RAISE EXCEPTION 'Voided repair-part history is immutable';
+          END IF;
+          IF NEW.voided_by IS NULL OR NEW.voided_at IS NULL
+             OR NEW.void_reason IS NULL OR NEW.void_event_id IS NULL THEN
+            RAISE EXCEPTION 'Repair-part void metadata must be written atomically';
+          END IF;
+          RETURN NEW;
+        END $$;
+        CREATE TRIGGER trg_protect_repair_part_history
+        BEFORE UPDATE OR DELETE ON repair_parts
+        FOR EACH ROW EXECUTE FUNCTION minerops_protect_repair_part_history();
+
+        CREATE FUNCTION minerops_validate_repair_part_history()
+        RETURNS trigger LANGUAGE plpgsql AS $$
+        DECLARE recorded repair_events%%ROWTYPE;
+        DECLARE voided repair_events%%ROWTYPE;
+        DECLARE component components%%ROWTYPE;
+        BEGIN
+          IF TG_OP = 'INSERT' AND (
+             NEW.voided_by IS NOT NULL OR NEW.voided_at IS NOT NULL
+             OR NEW.void_reason IS NOT NULL OR NEW.void_event_id IS NOT NULL) THEN
+            RAISE EXCEPTION 'A repair part must be recorded before it can be voided';
+          END IF;
+          SELECT * INTO recorded FROM repair_events WHERE id = NEW.recorded_event_id;
+          IF recorded.id IS NULL
+             OR recorded.repair_id <> NEW.repair_id
+             OR recorded.event_type <> 'REPAIR_PART_RECORDED'
+             OR recorded.created_by <> NEW.recorded_by
+             OR recorded.created_at <> NEW.recorded_at
+             OR recorded.payload ->> 'repair_part_id' <> NEW.id::text THEN
+            RAISE EXCEPTION 'Recorded repair-part event does not match its entry';
+          END IF;
+
+          IF TG_OP = 'INSERT' AND NEW.component_id IS NOT NULL THEN
+            SELECT * INTO component FROM components WHERE id = NEW.component_id;
+            IF component.id IS NULL
+               OR component.component_type <> NEW.component_type_snapshot
+               OR component.asset_id IS DISTINCT FROM NEW.component_asset_id_snapshot
+               OR component.manufacturer IS DISTINCT FROM NEW.component_manufacturer_snapshot
+               OR component.model IS DISTINCT FROM NEW.component_model_snapshot
+               OR component.manufacturer_serial IS DISTINCT FROM NEW.component_manufacturer_serial_snapshot THEN
+              RAISE EXCEPTION 'Tracked-component snapshot does not match the component';
+            END IF;
+          END IF;
+
+          IF NEW.void_event_id IS NOT NULL THEN
+            SELECT * INTO voided FROM repair_events WHERE id = NEW.void_event_id;
+            IF voided.id IS NULL
+               OR voided.repair_id <> NEW.repair_id
+               OR voided.event_type <> 'REPAIR_PART_VOIDED'
+               OR voided.created_by <> NEW.voided_by
+               OR voided.created_at <> NEW.voided_at
+               OR voided.payload ->> 'repair_part_id' <> NEW.id::text
+               OR voided.payload ->> 'reason' <> NEW.void_reason THEN
+              RAISE EXCEPTION 'Voided repair-part event does not match its entry';
+            END IF;
+          END IF;
+          RETURN NEW;
+        END $$;
+        CREATE TRIGGER trg_validate_repair_part_history
+        BEFORE INSERT OR UPDATE ON repair_parts
+        FOR EACH ROW EXECUTE FUNCTION minerops_validate_repair_part_history();
+        """
+    )
+
+
+def downgrade() -> None:
+    connection = op.get_bind()
+    connection.exec_driver_sql(
+        """
+        DO $$
+        DECLARE history_count bigint;
+        BEGIN
+          SELECT count(*) INTO history_count FROM components;
+          history_count := history_count + (SELECT count(*) FROM repair_parts);
+          history_count := history_count + (
+            SELECT count(*) FROM repair_events
+            WHERE event_type IN ('REPAIR_PART_RECORDED', 'REPAIR_PART_VOIDED')
+          );
+          IF history_count > 0 THEN
+            RAISE EXCEPTION USING
+              MESSAGE = format(
+                'Cannot downgrade Repair Parts Tracking: %s component, repair-part, or event records would be destroyed',
+                history_count
+              ),
+              HINT = 'Preserve or explicitly migrate Task 005 identity and history before downgrading; MinerOps will not delete or invent component, actor, timestamp, snapshot, or repair-part history.';
+          END IF;
+        END $$;
+        """
+    )
+
+    connection.exec_driver_sql(
+        """
+        DROP TRIGGER trg_validate_repair_part_history ON repair_parts;
+        DROP FUNCTION minerops_validate_repair_part_history();
+        DROP TRIGGER trg_protect_repair_part_history ON repair_parts;
+        DROP FUNCTION minerops_protect_repair_part_history();
+        DROP TRIGGER trg_protect_repair_event_history ON repair_events;
+        DROP FUNCTION minerops_protect_repair_event_history();
+        DROP TRIGGER trg_protect_component_identity ON components;
+        DROP FUNCTION minerops_protect_component_identity();
+        """
+    )
+
+    op.drop_constraint("ck_repair_events_payload_shape", "repair_events", type_="check")
+    op.drop_constraint("ck_repair_events_type", "repair_events", type_="check")
+    _create_event_constraints(False)
+
+    op.drop_index("uq_repair_parts_void_event", table_name="repair_parts")
+    op.drop_index("uq_repair_parts_recorded_event", table_name="repair_parts")
+    op.drop_index("idx_repair_parts_voided_by", table_name="repair_parts")
+    op.drop_index("idx_repair_parts_recorded_by", table_name="repair_parts")
+    op.drop_index("idx_repair_parts_component", table_name="repair_parts")
+    op.drop_index("idx_repair_parts_repair", table_name="repair_parts")
+    op.drop_table("repair_parts")
+
+    op.drop_index("uq_components_normalized_asset_id", table_name="components")
+    op.drop_index("idx_components_type", table_name="components")
+    op.drop_index("idx_components_created_by", table_name="components")
+    op.drop_table("components")
+
+    connection.exec_driver_sql(
+        """
+        DELETE FROM role_permissions
+        WHERE permission_id IN (
+          SELECT id FROM permissions
+          WHERE key IN ('components.read', 'components.create', 'repairs.parts.manage')
+        );
+        DELETE FROM permissions
+        WHERE key IN ('components.read', 'components.create', 'repairs.parts.manage');
+        """
+    )

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/policy.py

@@ -0,0 +1,35 @@
+"""Stage A containment: no current payload authorizes a physical write.
+
+There is deliberately no environment-variable override. Re-enabling physical
+control requires a separately reviewed identity-binding protocol.
+"""
+
+PHYSICAL_CONTROL_DISABLED = "physical_control_disabled_stage_a"
+UNSUPPORTED_COMMAND = "unsupported_command_schema_stage_a"
+READ_ONLY_COMMAND_TYPES = (
+    "poll_known_miners_now",
+    "discover_new_miners",
+    "enrich_match_discovery",
+)
+
+
+def rejection_reason(command_type: str) -> str | None:
+    if command_type == "miner_control":
+        return PHYSICAL_CONTROL_DISABLED
+    if command_type not in READ_ONLY_COMMAND_TYPES:
+        return UNSUPPORTED_COMMAND
+    return None
+
+
+def rejection_execution_outcome(row: dict) -> str:
+    """A current pending state alone says nothing about earlier delivery.
+
+    The repository supplies an explicit pre-transition evidence check while
+    holding the queue row lock. Missing/ambiguous checks and result submissions
+    are unknown. This describes queue delivery, never proof of physical outcome.
+    """
+    if (row.get("previous_status") == "pending"
+            and row.get("no_delivery_evidence") is True
+            and row.get("delivery_reported", False) is False):
+        return "not_dispatched"
+    return "unknown"

backend/app/agent_commands/repository.py

@@ -0,0 +1,322 @@
+"""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.agent_commands.policy import READ_ONLY_COMMAND_TYPES, rejection_execution_outcome, rejection_reason
+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'
+      AND command_type = ANY(%s)
+    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
+"""
+
+# Inspect existing durable history before changing status/completed_at/error.
+# A linked non-creation audit is conservatively ambiguous, even if timestamps
+# were lost. Legacy results need not agree on Agent ID to prevent a false claim
+# of non-delivery. Missing tables/permissions fail the transaction closed.
+NO_DELIVERY_EVIDENCE_SQL = """
+    q.created_at IS NOT NULL
+    AND q.claimed_at IS NULL AND q.completed_at IS NULL
+    AND q.result_payload IS NULL AND COALESCE(q.error_message, '') = ''
+    AND NOT EXISTS (
+        SELECT 1 FROM minerops_agent_command_results r
+        WHERE r.command_id = q.id
+           OR (r.agent_id = q.agent_id AND NULLIF(btrim(r.command_id), '') IS NULL)
+    )
+    AND NOT EXISTS (
+        SELECT 1 FROM audit_logs a
+        WHERE a.action <> 'miner.control.queued'
+          AND (a.old_value_json ->> 'command_id' = q.id
+               OR a.new_value_json ->> 'command_id' = q.id
+               OR a.old_value_json ->> 'operation_id' = q.id
+               OR a.new_value_json ->> 'operation_id' = q.id
+               OR (a.entity_type = 'agent_command' AND a.entity_id::text = q.id))
+    )
+"""
+
+RETIRE_COMMANDS_SQL = f"""
+WITH candidates AS (
+    SELECT q.id, q.command_status, ({NO_DELIVERY_EVIDENCE_SQL}) AS no_delivery_evidence
+    FROM minerops_agent_command_queue q
+    WHERE agent_id = %s AND command_status IN ('pending', 'claimed')
+      AND NOT (command_type = ANY(%s))
+    ORDER BY created_at, id
+    FOR UPDATE SKIP LOCKED
+    LIMIT 1000
+)
+UPDATE minerops_agent_command_queue AS queue
+SET command_status = 'cancelled', completed_at = COALESCE(queue.completed_at, now()),
+    error_message = concat_ws(chr(10), NULLIF(queue.error_message, ''), CASE WHEN queue.command_type = 'miner_control'
+        THEN 'physical_control_disabled_stage_a'
+        ELSE 'unsupported_command_schema_stage_a' END)
+FROM candidates WHERE queue.id = candidates.id
+RETURNING queue.id, queue.agent_id, queue.command_type,
+          candidates.command_status AS previous_status, candidates.no_delivery_evidence, queue.error_message
+"""
+
+RETIRE_SCHEDULE_COMMANDS_SQL = f"""
+WITH candidates AS (
+    SELECT q.id, q.command_status, ({NO_DELIVERY_EVIDENCE_SQL}) AS no_delivery_evidence
+    FROM minerops_agent_command_queue q
+    WHERE agent_id = %s AND request_payload ->> 'scheduled_action_id' = %s
+      AND command_status IN ('pending', 'claimed')
+      AND NOT (command_type = ANY(%s))
+    ORDER BY id
+    FOR UPDATE
+)
+UPDATE minerops_agent_command_queue AS queue
+SET command_status = 'cancelled', completed_at = COALESCE(queue.completed_at, now()),
+    error_message = concat_ws(chr(10), NULLIF(queue.error_message, ''), CASE WHEN queue.command_type = 'miner_control'
+        THEN 'physical_control_disabled_stage_a'
+        ELSE 'unsupported_command_schema_stage_a' END)
+FROM candidates WHERE queue.id = candidates.id
+RETURNING queue.id, queue.agent_id, queue.command_type,
+          candidates.command_status AS previous_status, candidates.no_delivery_evidence
+"""
+
+
+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:
+                self._retire_unsupported(cur, agent_id)
+                cur.execute(CLAIM_COMMANDS_SQL, (agent_id, list(READ_ONLY_COMMAND_TYPES), limit))
+                rows = [dict(row) for row in cur.fetchall()]
+            connection.commit()
+            return rows
+        except Exception:
+            connection.rollback()
+            raise
+        finally:
+            connection.close()
+
+    @staticmethod
+    def _audit_rejection(
+        cur, row: dict, *, actor_user_id: str | None = None,
+        source: str = "agent_poll",
+    ) -> None:
+        # Queue IDs can be legacy text, not UUIDs. Preserve them in JSON rather
+        # than coercing them into audit_logs.entity_id. Never log raw payloads.
+        cur.execute(
+            """INSERT INTO audit_logs
+               (actor_user_id, action, entity_type, old_value_json, new_value_json)
+               VALUES (%s, 'agent.command.rejected', 'agent_command', %s, %s)""",
+            (actor_user_id, Jsonb({"command_id": row["id"], "agent_id": row["agent_id"],
+                    "status": row["previous_status"]}),
+             Jsonb({"status": "cancelled", "reason": rejection_reason(row["command_type"]),
+                    "source": source,
+                    "execution_outcome": rejection_execution_outcome(row)})),
+        )
+
+    @classmethod
+    def _retire_unsupported(
+        cls, cur, agent_id: str, *, source: str = "agent_poll",
+        actor_user_id: str | None = None,
+    ) -> int:
+        cur.execute(RETIRE_COMMANDS_SQL, (agent_id, list(READ_ONLY_COMMAND_TYPES)))
+        rows = list(cur.fetchall())
+        for row in rows:
+            cls._audit_rejection(cur, row, source=source, actor_user_id=actor_user_id)
+        return len(rows)
+
+    def retire_unsupported(self, agent_id: str, *, actor_user_id: str) -> int:
+        """Audited cutover batch, including offline Agents; never claim any work.
+
+        A zero batch can mean locked rows were skipped. Operators must separately
+        verify no unsupported live rows remain before declaring a drain complete.
+        """
+        if not actor_user_id:
+            raise ValueError("Cutover retirement requires an accountable operator actor")
+        connection = self._connection_factory()
+        try:
+            with connection.cursor(row_factory=dict_row) as cur:
+                count = self._retire_unsupported(cur, agent_id, source="stage_a_cutover",
+                                                 actor_user_id=actor_user_id)
+            connection.commit()
+            return count
+        except Exception:
+            connection.rollback()
+            raise
+        finally:
+            connection.close()
+
+    def retire_schedule(self, schedule_id: str, *, actor_user_id: str, operation: str) -> int:
+        """Cancel live unsupported work and retain schedule history atomically.
+
+        The stored schedule determines Agent scope. Delete retires the schedule;
+        neither operation erases evidence or changes terminal command history.
+        """
+        if not actor_user_id or operation not in {"cancel", "delete"}:
+            raise ValueError("An authenticated actor and cancel/delete operation are required")
+        connection = self._connection_factory()
+        try:
+            with connection.cursor(row_factory=dict_row) as cur:
+                # Serialize retries and cancel/delete workers for this schedule.
+                cur.execute(
+                    """SELECT id, agent_id, status FROM minerops_scheduled_bulk_actions
+                       WHERE id = %s FOR UPDATE""", (schedule_id,),
+                )
+                schedule = cur.fetchone()
+                if not schedule:
+                    raise AgentCommandNotFound("Scheduled action not found")
+                cur.execute(RETIRE_SCHEDULE_COMMANDS_SQL,
+                            (schedule["agent_id"], schedule_id, list(READ_ONLY_COMMAND_TYPES)))
+                rows = list(cur.fetchall())
+                for row in rows:
+                    self._audit_rejection(cur, row, actor_user_id=actor_user_id,
+                                          source=f"schedule_{operation}")
+                if schedule["status"] in {"pending", "queued", "running"}:
+                    cur.execute(
+                        """UPDATE minerops_scheduled_bulk_actions
+                           SET status = 'cancelled', updated_at = now(),
+                               last_error = concat_ws(chr(10), NULLIF(last_error, ''),
+                                                      'physical_control_disabled_stage_a')
+                           WHERE id = %s""", (schedule_id,),
+                    )
+                    cur.execute(
+                        """INSERT INTO audit_logs
+                           (actor_user_id, action, entity_type, old_value_json, new_value_json)
+                           VALUES (%s, 'scheduled_action.retired', 'scheduled_action', %s, %s)""",
+                        (actor_user_id, Jsonb(dict(schedule)),
+                         Jsonb({"status": "cancelled", "operation": operation,
+                                "reason": "physical_control_disabled_stage_a"})),
+                    )
+            connection.commit()
+            return len(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:
+                # Enforce the same boundary on results: an old claimed entry
+                # cannot be promoted by an old Agent, retry, or direct caller.
+                cur.execute(
+                    f"""SELECT q.id, q.agent_id, q.command_type, q.command_status AS previous_status,
+                              ({NO_DELIVERY_EVIDENCE_SQL}) AS no_delivery_evidence
+                       FROM minerops_agent_command_queue q
+                       WHERE q.id = %s AND q.agent_id = %s FOR UPDATE""",
+                    (command_id, agent_id),
+                )
+                existing = cur.fetchone()
+                if existing and rejection_reason(existing["command_type"]):
+                    reason = rejection_reason(existing["command_type"])
+                    if existing["previous_status"] in {"pending", "claimed"}:
+                        cur.execute(
+                            """UPDATE minerops_agent_command_queue
+                               SET command_status = 'cancelled',
+                                   error_message = concat_ws(chr(10), NULLIF(error_message, ''), %s::text),
+                                   completed_at = COALESCE(completed_at, now()) WHERE id = %s""",
+                            (reason, command_id),
+                        )
+                        # A result submission itself reports possible delivery, even
+                        # when earlier durable claim metadata is absent.
+                        existing["delivery_reported"] = True
+                        self._audit_rejection(cur, existing, source="agent_result")
+                    connection.commit()
+                    raise AgentCommandConflict(reason)
+                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 +1,46 @@
+"""HTTP boundary for authenticated Agent command transport."""
+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
+
+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:
+    del request
+    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 +1,65 @@
+"""Agent command transport coordination and result validation."""
+
+import re
+
+from app.agent_commands.exceptions import (
+    AgentCommandConflict,
+    AgentCommandNotFound,
+)
+from app.agent_commands.models import (
+    AgentCommand,
+    AgentCommandResultRequest,
+)
+from app.agent_commands.repository import AgentCommandRepository
+from app.agent_commands.policy import rejection_reason
+
+
+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)
+            if rejection_reason(row["command_type"]) is None
+        ]
+
+    @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")
+        reason = rejection_reason(command["command_type"])
+        if reason:
+            # Repository repeats this check under a row lock and records the
+            # cancellation atomically; never accept an old physical result.
+            self.repository.finish_command(
+                request.command_id, agent_id, "cancelled", {}, reason
+            )
+            raise AgentCommandConflict(reason)
+        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)
+
+        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/components/__init__.py

@@ -0,0 +1 @@
+"""Minimal durable component registry for repair-part references."""

backend/app/components/dependencies.py

@@ -0,0 +1,8 @@
+"""Dependency construction for the Components domain."""
+
+from app.components.repository import ComponentRepository
+from app.components.service import ComponentService
+
+
+def get_component_service() -> ComponentService:
+    return ComponentService(ComponentRepository())

backend/app/components/exceptions.py

@@ -0,0 +1,32 @@
+"""Domain exceptions for the minimal component registry."""
+
+
+class ComponentError(Exception):
+    """Base exception for component operations."""
+
+
+class ComponentNotFound(ComponentError):
+    """Raised when a component UUID does not exist."""
+
+    def __init__(self, component_id: object):
+        self.component_id = component_id
+        super().__init__(f"Component not found: {component_id}")
+
+
+class DuplicateComponentAssetID(ComponentError):
+    """Raised when a normalized component Asset ID already exists."""
+
+    def __init__(self, asset_id: str):
+        self.asset_id = asset_id
+        super().__init__(f"Component Asset ID already exists: {asset_id}")
+
+
+class ComponentValidationError(ComponentError):
+    """Raised when component metadata violates a domain rule."""
+
+
+class ComponentActorRequired(ComponentError):
+    """Raised when component creation lacks an authenticated actor."""
+
+    def __init__(self):
+        super().__init__("An authenticated actor is required to create a component")

backend/app/components/models.py

@@ -0,0 +1,36 @@
+"""Typed contracts for the minimal component registry."""
+
+from typing import Literal
+from uuid import UUID
+
+from pydantic import AwareDatetime, BaseModel, ConfigDict, Field
+
+
+ComponentType = Literal["control_board", "hashboard", "power_supply", "fan"]
+
+
+class ComponentCreateRequest(BaseModel):
+    model_config = ConfigDict(extra="forbid", str_strip_whitespace=True)
+
+    component_type: ComponentType
+    asset_id: str | None = Field(default=None, max_length=255)
+    manufacturer: str | None = Field(default=None, max_length=255)
+    model: str | None = Field(default=None, max_length=255)
+    manufacturer_serial: str | None = Field(default=None, max_length=255)
+
+
+class ComponentDetail(BaseModel):
+    component_id: UUID
+    component_type: ComponentType
+    asset_id: str | None = None
+    manufacturer: str | None = None
+    model: str | None = None
+    manufacturer_serial: str | None = None
+    created_at: AwareDatetime
+    created_by: UUID
+
+
+class ComponentResponse(BaseModel):
+    data: ComponentDetail
+    meta: dict[str, object] = Field(default_factory=dict)
+    error: None = None

backend/app/components/repository.py

@@ -0,0 +1,143 @@
+"""PostgreSQL persistence for the minimal component registry."""
+
+from collections.abc import Callable, Iterator
+from contextlib import contextmanager
+from uuid import UUID
+
+import psycopg
+from psycopg.errors import UniqueViolation
+from psycopg.rows import dict_row
+
+from app.components.exceptions import DuplicateComponentAssetID
+from app.config import settings
+
+
+ConnectionFactory = Callable[[], psycopg.Connection]
+COMPONENT_ASSET_ID_CONSTRAINT = "uq_components_normalized_asset_id"
+
+
+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 ComponentRepository:
+    """Persistence boundary for minimal component identity."""
+
+    def __init__(
+        self,
+        connection_factory: ConnectionFactory | None = None,
+        *,
+        connection: psycopg.Connection | None = None,
+    ):
+        self._connection_factory = connection_factory or default_connection_factory
+        self._connection = connection
+
+    @contextmanager
+    def transaction(self) -> Iterator["ComponentRepository"]:
+        if self._connection is not None:
+            yield self
+            return
+
+        connection = self._connection_factory()
+        repository = ComponentRepository(
+            self._connection_factory,
+            connection=connection,
+        )
+        try:
+            yield repository
+            connection.commit()
+        except UniqueViolation as exc:
+            connection.rollback()
+            if exc.diag.constraint_name == COMPONENT_ASSET_ID_CONSTRAINT:
+                raise DuplicateComponentAssetID("normalized Asset ID") from exc
+            raise
+        except Exception:
+            connection.rollback()
+            raise
+        finally:
+            connection.close()
+
+    @contextmanager
+    def _connection_scope(self) -> Iterator[psycopg.Connection]:
+        if self._connection is not None:
+            yield self._connection
+            return
+
+        connection = self._connection_factory()
+        try:
+            yield connection
+        finally:
+            connection.close()
+
+    def create_component(
+        self,
+        *,
+        component_type: str,
+        asset_id: str | None,
+        manufacturer: str | None,
+        model: str | None,
+        manufacturer_serial: str | None,
+        created_by: UUID,
+    ) -> dict:
+        with self._connection_scope() as connection:
+            with connection.cursor(row_factory=dict_row) as cur:
+                cur.execute(
+                    """
+                    INSERT INTO components (
+                        component_type,
+                        asset_id,
+                        manufacturer,
+                        model,
+                        manufacturer_serial,
+                        created_by
+                    )
+                    VALUES (%s, %s, %s, %s, %s, %s)
+                    RETURNING
+                        id AS component_id,
+                        component_type,
+                        asset_id,
+                        manufacturer,
+                        model,
+                        manufacturer_serial,
+                        created_at,
+                        created_by
+                    """,
+                    (
+                        component_type,
+                        asset_id,
+                        manufacturer,
+                        model,
+                        manufacturer_serial,
+                        created_by,
+                    ),
+                )
+                return dict(cur.fetchone())
+
+    def get_component(self, component_id: UUID) -> dict | None:
+        with self._connection_scope() as connection:
+            with connection.cursor(row_factory=dict_row) as cur:
+                cur.execute(
+                    """
+                    SELECT
+                        id AS component_id,
+                        component_type,
+                        asset_id,
+                        manufacturer,
+                        model,
+                        manufacturer_serial,
+                        created_at,
+                        created_by
+                    FROM components
+                    WHERE id = %s
+                    """,
+                    (component_id,),
+                )
+                row = cur.fetchone()
+                return dict(row) if row else None

backend/app/components/router.py

@@ -0,0 +1,80 @@
+"""HTTP mapping for the minimal component registry."""
+
+from typing import Annotated
+from uuid import UUID
+
+from fastapi import APIRouter, Depends, HTTPException, status
+
+from app.components.dependencies import get_component_service
+from app.components.exceptions import (
+    ComponentActorRequired,
+    ComponentNotFound,
+    ComponentValidationError,
+    DuplicateComponentAssetID,
+)
+from app.components.models import (
+    ComponentCreateRequest,
+    ComponentResponse,
+)
+from app.components.service import ComponentService
+from app.identity import require_permission
+
+
+router = APIRouter(prefix="/api/components", tags=["components"])
+require_component_read = require_permission("components.read")
+require_component_create = require_permission("components.create")
+
+ComponentServiceDependency = Annotated[
+    ComponentService,
+    Depends(get_component_service),
+]
+ComponentReadUser = Annotated[dict, Depends(require_component_read)]
+ComponentCreateUser = Annotated[dict, Depends(require_component_create)]
+
+
+@router.post(
+    "",
+    response_model=ComponentResponse,
+    status_code=status.HTTP_201_CREATED,
+)
+def create_component(
+    request: ComponentCreateRequest,
+    service: ComponentServiceDependency,
+    current_user: ComponentCreateUser,
+) -> ComponentResponse:
+    try:
+        component = service.create_component(
+            request,
+            actor_user_id=UUID(str(current_user["id"])),
+        )
+    except DuplicateComponentAssetID as exc:
+        raise HTTPException(
+            status_code=status.HTTP_409_CONFLICT,
+            detail=str(exc),
+        ) from exc
+    except (ComponentActorRequired, ComponentValidationError) as exc:
+        raise HTTPException(
+            status_code=status.HTTP_422_UNPROCESSABLE_ENTITY,
+            detail=str(exc),
+        ) from exc
+    return ComponentResponse(data=component)
+
+
+@router.get(
+    "/{component_id}",
+    response_model=ComponentResponse,
+)
+def get_component(
+    component_id: UUID,
+    service: ComponentServiceDependency,
+    current_user: ComponentReadUser,
+) -> ComponentResponse:
+    del current_user
+    try:
+        component = service.get_component(component_id)
+    except ComponentNotFound as exc:
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail="Component not found",
+        ) from exc
+    return ComponentResponse(data=component)

backend/app/components/service.py

@@ -0,0 +1,75 @@
+"""Business rules for the minimal component registry."""
+
+from uuid import UUID
+
+from app.components.exceptions import (
+    ComponentActorRequired,
+    ComponentNotFound,
+    ComponentValidationError,
+    DuplicateComponentAssetID,
+)
+from app.components.models import ComponentCreateRequest, ComponentDetail
+from app.components.repository import ComponentRepository
+
+
+class ComponentService:
+    """Minimal component workflows independent of FastAPI."""
+
+    def __init__(self, repository: ComponentRepository):
+        self.repository = repository
+
+    @staticmethod
+    def _normalize_optional_text(value: str | None, field_name: str) -> str | None:
+        if value is None:
+            return None
+        normalized = str(value).strip()
+        if not normalized:
+            raise ComponentValidationError(
+                f"{field_name} must not be blank when supplied"
+            )
+        if len(normalized) > 255:
+            raise ComponentValidationError(
+                f"{field_name} must not exceed 255 characters"
+            )
+        return normalized
+
+    @staticmethod
+    def _map_component(component: dict) -> ComponentDetail:
+        return ComponentDetail(**component)
+
+    def create_component(
+        self,
+        request: ComponentCreateRequest,
+        *,
+        actor_user_id: UUID | None,
+    ) -> ComponentDetail:
+        if actor_user_id is None:
+            raise ComponentActorRequired()
+
+        asset_id = self._normalize_optional_text(request.asset_id, "asset_id")
+        values = {
+            "manufacturer": self._normalize_optional_text(
+                request.manufacturer, "manufacturer"
+            ),
+            "model": self._normalize_optional_text(request.model, "model"),
+            "manufacturer_serial": self._normalize_optional_text(
+                request.manufacturer_serial, "manufacturer_serial"
+            ),
+        }
+        try:
+            with self.repository.transaction() as repository:
+                component = repository.create_component(
+                    component_type=request.component_type,
+                    asset_id=asset_id,
+                    created_by=actor_user_id,
+                    **values,
+                )
+        except DuplicateComponentAssetID as exc:
+            raise DuplicateComponentAssetID(asset_id or "") from exc
+        return self._map_component(component)
+
+    def get_component(self, component_id: UUID) -> ComponentDetail:
+        component = self.repository.get_component(component_id)
+        if component is None:
+            raise ComponentNotFound(component_id)
+        return self._map_component(component)

backend/app/config.py

@@ -5,6 +5,8 @@ class Settings(BaseSettings):
     app_name: str = "MinerOps Console"
     app_env: str = "development"
     app_timezone: str = "America/Winnipeg"
+    minerops_build_commit: str | None = None
+    minerops_build_version: str | None = None
 
     postgres_db: str = "minerops"
     postgres_user: str = "minerops"
@@ -14,6 +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/dashboard/__init__.py

@@ -0,0 +1 @@
+"""Permission-aware operational Dashboard read model."""

backend/app/dashboard/dependencies.py

@@ -0,0 +1,14 @@
+"""Dependency construction for the Dashboard composition service."""
+
+from app.dashboard.service import DashboardService
+from app.inventory.dependencies import get_inventory_service
+from app.locations.dependencies import get_location_map_service
+from app.repairs.dependencies import get_repair_center_service
+
+
+def get_dashboard_service() -> DashboardService:
+    return DashboardService(
+        inventory_service=get_inventory_service(),
+        repair_center_service=get_repair_center_service(),
+        location_service=get_location_map_service(),
+    )

backend/app/dashboard/models.py

@@ -0,0 +1,32 @@
+"""Typed contracts for the operational Dashboard overview."""
+
+from datetime import datetime
+
+from pydantic import BaseModel, Field
+
+from app.inventory.models import InventoryFleetSummary
+from app.locations.models import LocationSummary
+from app.repairs.models import ActiveRepairSummary
+
+
+class DashboardAccess(BaseModel):
+    can_view_miners: bool = False
+    can_view_repairs: bool = False
+    can_view_locations: bool = False
+
+
+class DashboardOverviewData(BaseModel):
+    fleet: InventoryFleetSummary | None = None
+    repairs: ActiveRepairSummary | None = None
+    locations: LocationSummary | None = None
+    generated_at: datetime
+
+
+class DashboardOverviewMeta(BaseModel):
+    available_sections: list[str] = Field(default_factory=list)
+
+
+class DashboardOverviewResponse(BaseModel):
+    data: DashboardOverviewData
+    meta: DashboardOverviewMeta = Field(default_factory=DashboardOverviewMeta)
+    error: None = None

backend/app/dashboard/router.py

@@ -0,0 +1,40 @@
+"""HTTP boundary for the operational Dashboard overview."""
+
+from typing import Annotated
+
+from fastapi import APIRouter, Depends, Response
+
+from app.dashboard.dependencies import get_dashboard_service
+from app.dashboard.models import (
+    DashboardAccess,
+    DashboardOverviewResponse,
+)
+from app.dashboard.service import DashboardService
+from app.identity import require_permission, user_has_permission
+
+
+router = APIRouter(prefix="/api/dashboard", tags=["dashboard"])
+DashboardUser = Annotated[dict, Depends(require_permission("dashboard.view"))]
+DashboardServiceDependency = Annotated[
+    DashboardService,
+    Depends(get_dashboard_service),
+]
+
+
+@router.get("/overview", response_model=DashboardOverviewResponse)
+def get_dashboard_overview(
+    current_user: DashboardUser,
+    service: DashboardServiceDependency,
+    response: Response,
+) -> DashboardOverviewResponse:
+    response.headers["Cache-Control"] = "no-store"
+    return service.get_overview(
+        DashboardAccess(
+            can_view_miners=user_has_permission(current_user, "miners.view"),
+            can_view_repairs=user_has_permission(current_user, "repairs.view"),
+            can_view_locations=user_has_permission(
+                current_user,
+                "locations.view",
+            ),
+        )
+    )

backend/app/dashboard/service.py

@@ -0,0 +1,64 @@
+"""Composition service for permission-aware Dashboard summaries."""
+
+from datetime import datetime, timezone
+
+from app.dashboard.models import (
+    DashboardAccess,
+    DashboardOverviewData,
+    DashboardOverviewMeta,
+    DashboardOverviewResponse,
+)
+from app.inventory.service import InventoryService
+from app.locations.service import LocationMapService
+from app.repairs.center_service import RepairCenterService
+
+
+class DashboardService:
+    """Coordinate domain-owned summaries without introducing new rules."""
+
+    def __init__(
+        self,
+        inventory_service: InventoryService,
+        repair_center_service: RepairCenterService,
+        location_service: LocationMapService,
+    ):
+        self.inventory_service = inventory_service
+        self.repair_center_service = repair_center_service
+        self.location_service = location_service
+
+    def get_overview(self, access: DashboardAccess) -> DashboardOverviewResponse:
+        fleet = (
+            self.inventory_service.summarize_fleet()
+            if access.can_view_miners
+            else None
+        )
+        repairs = (
+            self.repair_center_service.summarize_active_repairs()
+            if access.can_view_repairs
+            else None
+        )
+        locations = (
+            self.location_service.summarize_locations(
+                include_miner_counts=access.can_view_miners
+            )
+            if access.can_view_locations
+            else None
+        )
+        available_sections = [
+            name
+            for name, value in (
+                ("fleet", fleet),
+                ("repairs", repairs),
+                ("locations", locations),
+            )
+            if value is not None
+        ]
+        return DashboardOverviewResponse(
+            data=DashboardOverviewData(
+                fleet=fleet,
+                repairs=repairs,
+                locations=locations,
+                generated_at=datetime.now(timezone.utc),
+            ),
+            meta=DashboardOverviewMeta(available_sections=available_sections),
+        )

backend/app/frontend/__init__.py

@@ -0,0 +1 @@
+"""Server-rendered frontend foundation for MinerOps."""

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

@@ -0,0 +1,109 @@
+"""Semantic HTML for the Internal Alpha Miner Detail page."""
+
+
+def miner_detail_content() -> str:
+    return """
+<div class="state-message" id="minerDetailLoading" role="status">
+    <strong>Loading miner</strong>
+    <span>Requesting current identity and operational context.</span>
+</div>
+<div class="state-message" id="minerDetailError" data-kind="error" role="alert" hidden>
+    <strong>Miner detail unavailable</strong>
+    <span id="minerDetailErrorText">The miner could not be loaded.</span>
+    <button class="command-button" id="minerDetailRetry" type="button">Retry</button>
+</div>
+<div id="minerDetailContent" hidden>
+    <section class="miner-detail-hero" aria-labelledby="minerIdentityTitle">
+        <div>
+            <p class="eyebrow">Durable miner identity</p>
+            <h2 id="minerIdentityTitle">Miner</h2>
+            <p id="minerDetailModel" class="panel-copy">Model unavailable</p>
+            <p id="minerDetailUuid" class="miner-detail-uuid"></p>
+        </div>
+        <div class="miner-detail-state">
+            <strong id="minerDetailOperational">Operational state unknown</strong>
+            <span id="minerDetailLifecycle">Lifecycle unavailable</span>
+            <span id="minerDetailLocationSummary">Location unavailable</span>
+        </div>
+        <nav class="miner-detail-actions" aria-label="Miner destinations">
+            <a class="quiet-link" id="minerDetailReturn" href="/assets/miners" hidden>Return</a>
+            <a class="quiet-link" href="/assets/miners">Back to Fleet</a>
+            <a class="quiet-link" id="minerDetailMap" href="/monitoring/map" hidden>View on Mine Map</a>
+            <a class="quiet-link" id="minerDetailTrends" href="/monitoring/analytics">View trends</a>
+            <a class="quiet-link" id="minerDetailRepairs" href="/operations/repairs" hidden>Open filtered Repair Center</a>
+            <button class="quiet-button" id="minerDetailRefresh" type="button">Refresh</button>
+        </nav>
+    </section>
+    <div class="miner-detail-grid">
+        <section class="panel" aria-labelledby="minerIdentitySectionTitle">
+            <div class="panel-head"><div><p class="eyebrow">Asset record</p>
+                <h2 id="minerIdentitySectionTitle">Identity</h2></div></div>
+            <dl class="definition-list" id="minerIdentityDetails"></dl>
+            <div id="minerTags" class="tag-list" aria-label="Miner tags"></div>
+        </section>
+        <section class="panel" aria-labelledby="minerCurrentStateTitle">
+            <div class="panel-head"><div><p class="eyebrow">Latest facts</p>
+                <h2 id="minerCurrentStateTitle">Current state</h2></div>
+                <span class="freshness" id="minerTelemetryAge">No observation</span></div>
+            <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>
+        <div id="minerLocationBody"></div>
+    </section>
+    <section class="panel" id="minerRepairSection" aria-labelledby="minerRepairTitle">
+        <div class="panel-head"><div><p class="eyebrow">Work context</p>
+            <h2 id="minerRepairTitle">Repair context</h2></div></div>
+        <div id="minerRepairBody"></div>
+        <div id="minerRepairEpisodes" class="disclosure-list"></div>
+    </section>
+    <section class="panel" aria-labelledby="minerHistoryTitle">
+        <div class="panel-head"><div><p class="eyebrow">Recorded facts</p>
+            <h2 id="minerHistoryTitle">History</h2></div></div>
+        <div class="disclosure-list">
+            <details id="minerIdentityHistory">
+                <summary>Identity history</summary>
+                <div class="lazy-content" id="minerIdentityHistoryBody" aria-live="polite">Open to load Asset ID and network identity history.</div>
+            </details>
+            <details id="minerObservations">
+                <summary>Recent observations</summary>
+                <div class="lazy-content" id="minerObservationsBody" aria-live="polite">Open to load up to 100 recent factual observations.</div>
+            </details>
+        </div>
+    </section>
+</div>
+"""

backend/app/frontend/monitoring_trends_view.py

@@ -0,0 +1,52 @@
+"""Semantic HTML for the Internal Alpha Monitoring Trends page."""
+
+
+def monitoring_trends_content(can_view_locations: bool) -> str:
+    location_options = (
+        '<option value="site">Site</option><option value="room">Room</option>'
+        if can_view_locations
+        else ""
+    )
+    return f"""
+<section class="trend-controls panel" aria-labelledby="trendControlsTitle">
+    <div class="panel-head"><div><p class="eyebrow">Historical scope</p>
+        <h2 id="trendControlsTitle">Trend controls</h2></div>
+        <p class="freshness" id="trendFreshness">Not loaded</p></div>
+    <form id="trendControls">
+        <label for="trendScope">Scope
+            <select id="trendScope">
+                <option value="fleet">Fleet</option>{location_options}
+            </select>
+        </label>
+        <label for="trendSite" id="trendSiteLabel" hidden>Site
+            <select id="trendSite"></select>
+        </label>
+        <label for="trendRoom" id="trendRoomLabel" hidden>Room
+            <select id="trendRoom"></select>
+        </label>
+        <fieldset class="trend-ranges">
+            <legend>Time range</legend>
+            <label><input type="radio" name="trendRange" value="6h">6 hours</label>
+            <label><input type="radio" name="trendRange" value="24h" checked>24 hours</label>
+            <label><input type="radio" name="trendRange" value="7d">7 days</label>
+        </fieldset>
+        <button class="command-button" type="submit">Apply</button>
+    </form>
+    <p class="panel-copy" id="trendScopeNote">Fleet trends use current miner inventory.</p>
+</section>
+<div class="state-message" id="trendLoading" role="status">
+    <strong>Loading trends</strong><span>Aggregating bounded raw telemetry.</span>
+</div>
+<div class="state-message" id="trendError" data-kind="error" role="alert" hidden>
+    <strong>Trends unavailable</strong><span id="trendErrorText">The request failed.</span>
+    <button class="command-button" id="trendRetry" type="button">Retry</button>
+</div>
+<section id="trendContent" aria-label="Historical telemetry trends" hidden>
+    <div class="trend-summary" aria-live="polite">
+        <p><strong id="trendScopeLabel">Fleet</strong></p>
+        <p id="trendRangeSummary"></p>
+        <p id="trendTimezone"></p>
+    </div>
+    <div id="trendCharts" class="trend-charts"></div>
+</section>
+"""

backend/app/frontend/router.py

@@ -0,0 +1,163 @@
+"""HTTP routes for the MinerOps Internal Alpha application shell."""
+
+from pathlib import Path
+from typing import Annotated
+from uuid import UUID
+
+from fastapi import APIRouter, Depends, Query
+from fastapi.responses import HTMLResponse, Response
+
+from app.frontend.views import render_app_page
+from app.identity import require_permission, safe_next_path, user_has_permission
+
+
+router = APIRouter(tags=["frontend"])
+STATIC_ROOT = Path(__file__).with_name("static")
+
+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:
+    return render_app_page(
+        view,
+        current_user,
+        lambda permission: user_has_permission(current_user, permission),
+        **context,
+    )
+
+
+@router.get("/assets/minerops-app.css", include_in_schema=False)
+def frontend_styles() -> Response:
+    return Response(
+        (STATIC_ROOT / "app.css").read_text(encoding="utf-8"),
+        media_type="text/css",
+        headers={"Cache-Control": "no-store"},
+    )
+
+
+@router.get("/assets/minerops-app.js", include_in_schema=False)
+def frontend_script() -> Response:
+    return Response(
+        (STATIC_ROOT / "app.js").read_text(encoding="utf-8"),
+        media_type="text/javascript",
+        headers={"Cache-Control": "no-store"},
+    )
+
+
+@router.get("/assets/minerops-dashboard.js", include_in_schema=False)
+def dashboard_script() -> Response:
+    return Response(
+        (STATIC_ROOT / "dashboard.js").read_text(encoding="utf-8"),
+        media_type="text/javascript",
+        headers={"Cache-Control": "no-store"},
+    )
+
+
+@router.get("/assets/minerops-mine-map.js", include_in_schema=False)
+def mine_map_script() -> Response:
+    return Response(
+        (STATIC_ROOT / "mine-map.js").read_text(encoding="utf-8"),
+        media_type="text/javascript",
+        headers={"Cache-Control": "no-store"},
+    )
+
+
+@router.get("/assets/minerops-fleet.js", include_in_schema=False)
+def fleet_script() -> Response:
+    return Response(
+        (STATIC_ROOT / "fleet.js").read_text(encoding="utf-8"),
+        media_type="text/javascript",
+        headers={"Cache-Control": "no-store"},
+    )
+
+
+
+@router.get("/assets/minerops-repair-center.js", include_in_schema=False)
+def repair_center_script() -> Response:
+    return Response(
+        (STATIC_ROOT / "repair-center.js").read_text(encoding="utf-8"),
+        media_type="text/javascript",
+        headers={"Cache-Control": "no-store"},
+    )
+
+
+@router.get("/assets/minerops-miner-detail.js", include_in_schema=False)
+def miner_detail_script() -> Response:
+    return Response(
+        (STATIC_ROOT / "miner-detail.js").read_text(encoding="utf-8"),
+        media_type="text/javascript",
+        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)
+
+
+@router.get(
+    "/monitoring/map",
+    response_class=HTMLResponse,
+    include_in_schema=False,
+)
+def mine_map_page(current_user: MapUser) -> str:
+    return render_page("map", current_user)
+
+
+@router.get(
+    "/operations/repairs",
+    response_class=HTMLResponse,
+    include_in_schema=False,
+)
+def repair_center_page(current_user: RepairUser) -> str:
+    return render_page("repairs", current_user)
+
+
+@router.get(
+    "/assets/miners",
+    response_class=HTMLResponse,
+    include_in_schema=False,
+)
+def miners_page(current_user: MinerUser) -> str:
+    return render_page("miners", current_user)
+
+
+@router.get(
+    "/miners/{miner_id}/detail",
+    response_class=HTMLResponse,
+    include_in_schema=False,
+)
+def miner_detail_page(
+    miner_id: UUID,
+    current_user: MinerUser,
+    return_to: Annotated[str | None, Query(max_length=2048)] = None,
+) -> str:
+    safe_return = safe_next_path(return_to) if return_to else None
+    if safe_return != return_to:
+        safe_return = None
+    return render_page("miner_detail", current_user, miner_id=str(miner_id),
+                       return_to=safe_return)

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.js

@@ -0,0 +1,47 @@
+(function () {
+    "use strict";
+
+    function setupShell() {
+        const menu = document.getElementById("menuButton");
+        const nav = document.getElementById("primaryNav");
+        if (menu && nav) {
+            menu.addEventListener("click", function () {
+                const open = nav.dataset.open !== "true";
+                nav.dataset.open = String(open);
+                menu.setAttribute("aria-expanded", String(open));
+            });
+        }
+
+        const search = document.getElementById("globalSearchForm");
+        const searchInput = document.getElementById("globalSearchInput");
+        if (search && searchInput) {
+            search.addEventListener("submit", function (event) {
+                event.preventDefault();
+                const query = searchInput.value.trim();
+                const target = query
+                    ? "/assets/miners?query=" + encodeURIComponent(query)
+                    : "/assets/miners";
+                window.location.assign(target);
+            });
+        }
+
+        const logout = document.getElementById("logoutButton");
+        if (logout) {
+            logout.addEventListener("click", async function () {
+                logout.disabled = true;
+                try {
+                    await fetch("/api/auth/logout", {
+                        method: "POST",
+                        credentials: "same-origin"
+                    });
+                } finally {
+                    window.location.replace("/login");
+                }
+            });
+        }
+    }
+
+
+
+    setupShell();
+})();