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/core/config/app_config.dart

@@ -1,13 +1,29 @@
+import 'package:flutter/foundation.dart';
+
 class AppConfig {
   AppConfig._();
 
-  static const String baseUrl = String.fromEnvironment(
-    'BASE_URL',
-    defaultValue: 'https://localhost:3000',
-  );
+  static const String _baseUrlFromEnv = String.fromEnvironment('BASE_URL');
+
+  static String get baseUrl {
+    if (_baseUrlFromEnv.isNotEmpty) {
+      return _baseUrlFromEnv;
+    }
+
+    if (!kIsWeb && defaultTargetPlatform == TargetPlatform.android) {
+      return 'http://10.0.2.2:8000';
+    }
+
+    return 'http://localhost:8000';
+  }
 
   static const String googleClientId = String.fromEnvironment(
     'GOOGLE_CLIENT_ID',
     defaultValue: '',
   );
+
+  static const String googleServerClientId = String.fromEnvironment(
+    'GOOGLE_SERVER_CLIENT_ID',
+    defaultValue: '',
+  );
 }