Cleanup Comments

Util/OS/OSNotification.cs

@@ -9,8 +9,12 @@ namespace ADOFAIRenderer.Util.OS;
 /// <summary>
 /// Sends native desktop notifications on Windows, macOS, and Linux.
 /// <para>
-/// - <b>Windows</b>: Uses Win32 <c>Shell_NotifyIcon</c> (system tray balloon) via P/Invoke.
-///   No PowerShell, no UWP, no WinRT dependencies.
+/// - <b>Windows</b>: Toast notification shown by a hidden <c>powershell.exe</c> process
+///   (WinRT <c>ToastNotificationManager</c>, script passed with <c>-EncodedCommand</c>).
+///   With a folder path, the script also registers the <c>adofai-renderer://</c> URL protocol under
+///   <c>HKCU\Software\Classes\adofai-renderer</c> (open command: <c>explorer.exe "&lt;folder&gt;"</c>)
+///   so the toast button opens the folder; the key is overwritten on each notification and stays registered.
+///   When PowerShell fails, a Win32 <c>Shell_NotifyIcon</c> balloon is shown via P/Invoke.
 /// </para>
 /// <para>
 /// - <b>macOS</b>: Uses <c>osascript</c> with AppleScript's <c>display notification</c>.
@@ -88,7 +92,9 @@ internal static class OSNotification
 
         /// <summary>
         /// Attempts to show a Windows Toast notification via PowerShell.
-        /// Returns true if the process launched successfully, false otherwise.
+        /// With a folder path, registers the adofai-renderer:// protocol in HKCU first (see class summary).
+        /// Waits up to 5 seconds for the process. Returns true when it exits with code 0,
+        /// false when it exits with another code, does not exit within 5 seconds, or fails to start.
         /// </summary>
         private static bool TrySendToast(string title, string message, string? folderPath)
         {