feat: tabbed settings dialog (pill tabs, full-bleed panel), hover color setting, title bar grab cursor (v1.9.2)

lib/services/window_persistence.dart

@@ -25,6 +25,11 @@ class WindowPersistence {
   /// Sadece modu günceller; x/y/w/h korunur.
   static void saveFilled(bool value) => _write({'filled': value});
 
+  /// Tüm arayüzdeki hover vurgu rengi (ARGB). Anahtar yoksa varsayılan kırmızı.
+  static int get hoverColor => (_read()?['hoverColor'] as num?)?.toInt() ?? 0xFFF44336;
+
+  static void saveHoverColor(int value) => _write({'hoverColor': value});
+
   /// Save window rect synchronously (safe to call before destroy).
   static void saveSync({
     required Offset position,