refactor: strip obvious comments

lib/services/gamepad_service.dart

@@ -153,7 +153,6 @@ class GamepadService with WindowListener {
   GamepadService._({GamepadDuplicateInputGuard? duplicateInputGuard})
     : _duplicateInputGuard = duplicateInputGuard ?? GamepadDuplicateInputGuard(enabled: () => Platform.isWindows);
 
-  /// Get the singleton instance.
   static GamepadService get instance {
     _instance ??= GamepadService._();
     return _instance!;
@@ -166,7 +165,6 @@ class GamepadService with WindowListener {
   void start() async {
     appLogger.i('GamepadService: Starting on ${Platform.operatingSystem}');
 
-    // List connected gamepads
     try {
       final gamepads = await Gamepad.instance.listGamepads();
       appLogger.i('GamepadService: Found ${gamepads.length} gamepad(s)');
@@ -193,7 +191,6 @@ class GamepadService with WindowListener {
     appLogger.i('GamepadService: Listening for gamepad events');
   }
 
-  /// Stop listening to gamepad events.
   void stop() {
     _stopDirectionRepeat();
     _unregisterNativeKeyHandler();
@@ -325,8 +322,8 @@ class GamepadService with WindowListener {
       _pressedButtons.remove(event.button);
       if (_suppressedButtons.remove(event.button)) return;
 
+      // D-pad release — stop repeat
       switch (event.button) {
-        // D-pad release — stop repeat
         case GamepadButton.dpadUp:
         case GamepadButton.dpadDown:
         case GamepadButton.dpadLeft: