Fix Tailscale download URLs: Use dynamic version detection

- Add GitHub API integration to get latest Tailscale version
- Fix broken download URLs by using correct versioned filenames
- Add fallback version (1.86.2) if API call fails
- Update both English and Korean PowerShell scripts
- Resolves download errors in installation process

🤖 Generated with [Claude Code](https://claude.ai/code)

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

farmq-install-en.ps1

@@ -111,12 +111,24 @@ function Install-Tailscale {
     
     Write-Info "Installing Tailscale for Windows..."
     
+    # Get latest Tailscale version
+    try {
+        Write-Status "Getting latest Tailscale version..."
+        $latestRelease = Invoke-RestMethod -Uri "https://api.github.com/repos/tailscale/tailscale/releases/latest" -UseBasicParsing
+        $version = $latestRelease.tag_name.TrimStart('v')
+        Write-Info "Latest version: $version"
+    }
+    catch {
+        Write-Warning "Failed to get latest version, using fallback"
+        $version = "1.86.2"
+    }
+    
     # Temporary download path
-    $tempPath = "$env:TEMP\tailscale-setup.exe"
-    $downloadUrl = "https://pkgs.tailscale.com/stable/tailscale-setup.exe"
+    $tempPath = "$env:TEMP\tailscale-setup-$version.exe"
+    $downloadUrl = "https://pkgs.tailscale.com/stable/tailscale-setup-$version.exe"
     
     try {
-        Write-Status "Downloading Tailscale..."
+        Write-Status "Downloading Tailscale from: $downloadUrl"
         Invoke-WebRequest -Uri $downloadUrl -OutFile $tempPath -UseBasicParsing
         
         Write-Status "Installing Tailscale... (please wait)"