Release 0.4.5: installer DB wizard, credential key, lean offline Setup.

Choose bundled or external PostgreSQL in the Setup wizard with connection
validation; optional NETX_CREDENTIAL_SECRET_KEY; single desktop shortcut;
faster uninstall and tray startup for offline Windows packages.

Co-authored-by: Cursor <cursoragent@cursor.com>

packaging/uninstall_delete_data.ps1

@@ -0,0 +1,53 @@
+param(
+    [string]$DataRoot = ""
+)
+
+# Post-uninstall optional data wipe with retries (handles briefly locked runtime logs).
+
+$ErrorActionPreference = "Continue"
+if (-not $DataRoot) {
+    $DataRoot = Join-Path ([Environment]::GetFolderPath("CommonApplicationData")) "NetX"
+}
+
+if (-not (Test-Path -LiteralPath $DataRoot)) {
+    Write-Host "==> Data root already gone: $DataRoot"
+    exit 0
+}
+
+Write-Host "==> Deleting data root: $DataRoot"
+
+# Kill anything still holding files under data root.
+Get-CimInstance Win32_Process -ErrorAction SilentlyContinue | Where-Object {
+    $_.CommandLine -and ($_.CommandLine.IndexOf($DataRoot, [StringComparison]::OrdinalIgnoreCase) -ge 0)
+} | ForEach-Object {
+    try { Stop-Process -Id $_.ProcessId -Force -ErrorAction SilentlyContinue } catch {}
+    try { & taskkill.exe /F /PID $_.ProcessId 2>$null | Out-Null } catch {}
+}
+
+$ok = $false
+for ($i = 1; $i -le 5; $i++) {
+    try {
+        cmd /c "rmdir /s /q `"$DataRoot`""
+    } catch {}
+    if (-not (Test-Path -LiteralPath $DataRoot)) {
+        $ok = $true
+        break
+    }
+    Start-Sleep -Seconds 1
+}
+
+if (-not $ok -and (Test-Path -LiteralPath $DataRoot)) {
+    try {
+        takeown /F $DataRoot /R /D Y | Out-Null
+        icacls $DataRoot /grant Administrators:F /T | Out-Null
+        cmd /c "rmdir /s /q `"$DataRoot`""
+    } catch {}
+}
+
+if (Test-Path -LiteralPath $DataRoot) {
+    Write-Host "[WARN] Could not fully delete $DataRoot"
+    exit 1
+}
+
+Write-Host "==> Data root deleted"
+exit 0