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/bookshelf/presentation/bookshelf_screen.dart

@@ -27,8 +27,8 @@ class BookshelfScreen extends ConsumerWidget {
               const Text('Vui lòng đăng nhập để xem tủ sách'),
               const SizedBox(height: 16),
               FilledButton(
-                onPressed: () => context.push(RouteNames.login),
-                child: const Text('Đăng nhập'),
+                onPressed: () => ref.read(authProvider.notifier).signInWithGoogle(),
+                child: const Text('Đăng nhập bằng Google'),
               ),
             ],
           ),