feat: Enhance TTS player functionality and UI

- Added resume functionality to TTS player when paused.
- Display voice name or language in TTS player UI.
- Improved error handling in reader provider with debug messages.
- Updated TTS service to configure Vietnamese voice and handle platform-specific audio settings.
- Removed wakelock dependency and related code.
- Fixed search screen error handling.
- Updated settings screen to navigate to home after sign out.
- Improved splash screen with timer management.
- Enhanced main app error handling with logging.
- Removed unused package_info_plus and wakelock_plus dependencies.
- Added environment variable support for mobile runtime.
- Integrated Google Sign-In configuration for Android.
- Created logging observer for Riverpod providers.
- Added scripts for environment setup and Google Sign-In validation.

lib/features/comments/presentation/comments_screen.dart

@@ -72,7 +72,8 @@ class _CommentsScreenState extends ConsumerState<CommentsScreen> {
                 return ListView.separated(
                   padding: const EdgeInsets.symmetric(vertical: 8),
                   itemCount: comments.length,
-                  separatorBuilder: (_, __) => const Divider(height: 1),
+                  separatorBuilder: (_, separatorIndex) =>
+                      const Divider(height: 1),
                   itemBuilder: (context, index) =>
                       _CommentTile(comment: comments[index]),
                 );