로그 포맷 통일, slog 적용

frontend/lib/main.dart

@@ -9,18 +9,28 @@ import 'package:flutter_web_plugins/url_strategy.dart';
 import 'features/auth/presentation/login_screen.dart';
 import 'features/dashboard/presentation/dashboard_screen.dart';
 import 'core/services/auth_proxy_service.dart';
+import 'core/services/logger_service.dart';
+import 'package:logging/logging.dart';
+
+final _log = Logger('Main');
 
 void main() async {
   WidgetsFlutterBinding.ensureInitialized();
   usePathUrlStrategy();
+  
+  // 0. Initialize Logger
+  LoggerService.init();
 
   // 1. Global Error Handling
   FlutterError.onError = (details) {
     FlutterError.presentError(details);
+    _log.severe("FLUTTER_ERROR", details.exception, details.stack);
+    // Also send to backend if needed
     AuthProxyService.logError("FLUTTER_ERROR: ${details.exception}\n${details.stack}");
   };
 
   PlatformDispatcher.instance.onError = (error, stack) {
+    _log.severe("PLATFORM_ERROR", error, stack);
     AuthProxyService.logError("PLATFORM_ERROR: $error\n$stack");
     return true;
   };
@@ -29,7 +39,7 @@ void main() async {
   try {
     await dotenv.load(fileName: ".env");
   } catch (e) {
-    debugPrint("Warning: .env file not found.");
+    _log.warning("Warning: .env file not found.");
   }
 
   // Initialize Descope
@@ -40,13 +50,15 @@ void main() async {
   try {
     await Descope.sessionManager.loadSession();
   } catch (e) {
-    debugPrint("Failed to load session: $e");
+    _log.warning("Failed to load session: $e");
   }
 
   runApp(const ProviderScope(child: BaronSSOApp()));
 }
 
 // Router Configuration
+final _routerLogger = Logger('Router');
+
 final _router = GoRouter(
   initialLocation: '/',
   debugLogDiagnostics: true, // Enable diagnostic logs
@@ -54,7 +66,7 @@ final _router = GoRouter(
     GoRoute(
       path: '/', 
       builder: (context, state) {
-        debugPrint("[Router] Navigating to root (LoginScreen)");
+        _routerLogger.info("Navigating to root (LoginScreen)");
         return const LoginScreen();
       }
     ),
@@ -62,14 +74,14 @@ final _router = GoRouter(
       path: '/verify/:token',
       builder: (context, state) {
         final token = state.pathParameters['token'];
-        debugPrint("[Router] Navigating to /verify with token: $token");
+        _routerLogger.info("Navigating to /verify with token: $token");
         return LoginScreen(verificationToken: token);
       },
     ),
     GoRoute(
       path: '/dashboard',
       builder: (context, state) {
-        debugPrint("[Router] Navigating to /dashboard");
+        _routerLogger.info("Navigating to /dashboard");
         return const DashboardScreen();
       },
     ),
@@ -80,14 +92,14 @@ final _router = GoRouter(
     final path = state.uri.path;
     final isLoggingIn = path == '/' || path.startsWith('/verify/');
 
-    debugPrint("[Router] Redirect check - Path: $path, IsLoggedIn: $isLoggedIn");
+    _routerLogger.fine("Redirect check - Path: $path, IsLoggedIn: $isLoggedIn");
 
     if (!isLoggedIn && !isLoggingIn) {
-      debugPrint("[Router] Not logged in, redirecting to /");
+      _routerLogger.info("Not logged in, redirecting to /");
       return '/';
     }
     if (isLoggedIn && path == '/') {
-      debugPrint("[Router] Logged in, redirecting to /dashboard");
+      _routerLogger.info("Logged in, redirecting to /dashboard");
       return '/dashboard';
     }