chore: add Windows agent source baseline

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
+}