feat: add safe miner control foundation

agents/windows/install.ps1

@@ -0,0 +1,62 @@
+#Requires -RunAsAdministrator
+$ErrorActionPreference = "Stop"
+
+$Target = "C:\MinerOpsAgent"
+$BackupRoot = Join-Path $Target "backups"
+$Backup = Join-Path $BackupRoot (Get-Date -Format "yyyyMMdd-HHmmss")
+$RuntimeFiles = @(
+    "MinerOpsAgentService.ps1", "MinerOpsAgentTray.ps1", "MinerOpsAgentGUI.ps1",
+    "MinerOpsApi3EnrichmentPoller.ps1", "MinerOpsPoolPoller.ps1",
+    "MinerOpsPoolPollerTask.ps1", "EnrichOneMiner.ps1", "MinerOpsControl.ps1",
+    "VERSION"
+)
+
+New-Item -ItemType Directory -Force -Path $Target, $BackupRoot | Out-Null
+$existing = @($RuntimeFiles | Where-Object { Test-Path (Join-Path $Target $_) })
+if ($existing.Count -gt 0) {
+    New-Item -ItemType Directory -Force -Path $Backup | Out-Null
+    foreach ($name in $existing) {
+        Copy-Item (Join-Path $Target $name) (Join-Path $Backup $name) -Force
+    }
+}
+
+try {
+    foreach ($name in $RuntimeFiles) {
+        $source = Join-Path $PSScriptRoot $name
+        if (!(Test-Path $source)) { throw "Deployment source is missing $name" }
+        Copy-Item $source (Join-Path $Target $name) -Force
+    }
+
+    $powerShell = "$env:SystemRoot\System32\WindowsPowerShell\v1.0\powershell.exe"
+    $system = New-ScheduledTaskPrincipal -UserId "SYSTEM" -LogonType ServiceAccount -RunLevel Highest
+    $startup = New-ScheduledTaskTrigger -AtStartup
+    $fiveMinutes = New-ScheduledTaskTrigger -Once -At (Get-Date).AddMinutes(1) `
+        -RepetitionInterval (New-TimeSpan -Minutes 5)
+
+    $definitions = @(
+        @{ Name = "MinerOpsAgent"; Script = "MinerOpsAgentService.ps1"; Trigger = $startup; Principal = $system },
+        @{ Name = "MinerOpsAgentTray"; Script = "MinerOpsAgentTray.ps1"; Trigger = (New-ScheduledTaskTrigger -AtLogOn); Principal = $null },
+        @{ Name = "MinerOpsApi3Enrichment"; Script = "MinerOpsApi3EnrichmentPoller.ps1"; Trigger = $fiveMinutes; Principal = $system },
+        @{ Name = "MinerOpsPoolPoller"; Script = "MinerOpsPoolPollerTask.ps1"; Trigger = $fiveMinutes; Principal = $system }
+    )
+    foreach ($definition in $definitions) {
+        $arguments = '-NoProfile -ExecutionPolicy Bypass -File "{0}"' -f `
+            (Join-Path $Target $definition.Script)
+        $action = New-ScheduledTaskAction -Execute $powerShell -Argument $arguments
+        if ($definition.Principal) {
+            Register-ScheduledTask -TaskName $definition.Name -Action $action `
+                -Trigger $definition.Trigger -Principal $definition.Principal -Force | Out-Null
+        } else {
+            Register-ScheduledTask -TaskName $definition.Name -Action $action `
+                -Trigger $definition.Trigger -Force | Out-Null
+        }
+    }
+    Write-Host "MinerOps Windows Agent installed. Existing config, state, and logs were preserved."
+} catch {
+    if (Test-Path $Backup) {
+        foreach ($name in $existing) {
+            Copy-Item (Join-Path $Backup $name) (Join-Path $Target $name) -Force
+        }
+    }
+    throw
+}