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flutter/lib/main.dart

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+import 'package:flutter/material.dart';
+import 'package:flutter_dotenv/flutter_dotenv.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+
+Future<void> main() async {
+  // dotenv 로드 — .env 파일이 없으면 기본값으로 동작
+  WidgetsFlutterBinding.ensureInitialized();
+  try {
+    await dotenv.load(fileName: '.env');
+  } catch (_) {
+    // .env 파일이 없는 경우 무시 (기본값 사용)
+  }
+
+  runApp(
+    // Riverpod Provider Scope 적용
+    const ProviderScope(
+      child: MyApp(),
+    ),
+  );
+}
+
+class MyApp extends StatelessWidget {
+  const MyApp({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    return MaterialApp(
+      title: 'TMA App',
+      theme: ThemeData(
+        colorScheme: ColorScheme.fromSeed(seedColor: Colors.deepPurple),
+        useMaterial3: true,
+      ),
+      home: const HomeView(),
+    );
+  }
+}
+
+class HomeView extends StatelessWidget {
+  const HomeView({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(
+        title: const Text('TMA Global Architecture'),
+      ),
+      body: Center(
+        child: Column(
+          mainAxisAlignment: MainAxisAlignment.center,
+          children: [
+            const Text('Riverpod & Dio Interceptor Setup Complete.'),
+            const SizedBox(height: 16),
+            ElevatedButton(
+              onPressed: () {
+                // 테스트 용 임시 스낵바 알림 호출 (User-Friendly Error UI)
+                ScaffoldMessenger.of(context).showSnackBar(
+                  const SnackBar(content: Text('에러 발생 시 보여질 Toast 예시입니다.')),
+                );
+              },
+              child: const Text('Show Global Alert Test'),
+            ),
+          ],
+        ),
+      ),
+    );
+  }
+}