Add Tailscale reset script for ESA/Headscale environments

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

ESA-TailScale.ps1

@@ -0,0 +1,66 @@
+# PowerShell Script to Reset Tailscale on Windows
+# Works even if Tailscale service is not present
+
+function Get-TailscalePath {
+    $pathsToCheck = @(
+        "$env:ProgramFiles\Tailscale\tailscale.exe",
+        "$env:ProgramFiles(x86)\Tailscale\tailscale.exe",
+        "$env:LOCALAPPDATA\Tailscale\tailscale.exe"
+    )
+    foreach ($path in $pathsToCheck) {
+        if (Test-Path $path) {
+            return $path
+        }
+    }
+    return $null
+}
+
+$tailscalePath = Get-TailscalePath
+
+if (-not $tailscalePath) {
+    Write-Warning "Tailscale CLI not found on this system. Skipping CLI commands..."
+} else {
+    Write-Host "Found Tailscale CLI at $tailscalePath"
+    & "$tailscalePath" logout
+}
+
+# Stop service if exists
+$service = Get-Service -Name "Tailscale" -ErrorAction SilentlyContinue
+if ($service) {
+    Write-Host "Stopping Tailscale service..."
+    Stop-Service Tailscale -Force
+} else {
+    Write-Warning "Tailscale service not found, skipping stop."
+}
+
+# Remove state file if present
+$statePath = "C:\ProgramData\Tailscale\tailscaled.state"
+if (Test-Path $statePath) {
+    Remove-Item $statePath -Force
+    Write-Host "Removed tailscaled.state"
+}
+
+# Remove appdata folders
+$localApp = "$env:LOCALAPPDATA\Tailscale"
+$roamingApp = "$env:APPDATA\Tailscale"
+
+foreach ($folder in @($localApp, $roamingApp)) {
+    if (Test-Path $folder) {
+        Remove-Item $folder -Recurse -Force
+        Write-Host "Removed folder: $folder"
+    }
+}
+
+# Restart service if exists
+if ($service) {
+    Start-Service Tailscale
+    Write-Host "Restarted Tailscale service"
+}
+
+# Show prefs if CLI was found
+if ($tailscalePath) {
+    & "$tailscalePath" debug prefs
+}
+
+Write-Host "`n✅ Tailscale reset complete. If you're using Headscale, run:"
+Write-Host "`ttailscale up --login-server http://headscale.estudiogroup.com:8080"