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/network/api_client.dart

@@ -1,4 +1,5 @@
 import 'package:dio/dio.dart';
+import 'package:flutter/foundation.dart';
 
 import '../storage/secure_store.dart';
 
@@ -18,12 +19,28 @@ class ApiClient {
     dio.interceptors.add(
       InterceptorsWrapper(
         onRequest: (options, handler) async {
+          debugPrint('[API] ${options.method} ${options.baseUrl}${options.path}');
           final token = await _secureStore.getAccessToken();
           if (token != null && token.isNotEmpty) {
             options.headers['Authorization'] = 'Bearer $token';
           }
           handler.next(options);
         },
+        onResponse: (response, handler) {
+          debugPrint(
+            '[API][OK] ${response.requestOptions.method} '
+            '${response.requestOptions.baseUrl}${response.requestOptions.path} '
+            '-> ${response.statusCode}',
+          );
+          handler.next(response);
+        },
+        onError: (error, handler) {
+          debugPrint(
+            '[API][ERROR] ${error.requestOptions.method} ${error.requestOptions.baseUrl}${error.requestOptions.path} '
+            '-> ${error.type}: ${error.message}',
+          );
+          handler.next(error);
+        },
       ),
     );
   }