feat(app): scaffolding initial du projet Flutter GameTime

Structure Flutter iOS/Android (lib/ organisé en couches domain,
application, infrastructure, presentation), intégration Drift pour la
persistance locale (sqlite3_flutter_libs), configuration des plateformes
android/ et ios/. Build APK debug validé.

Ajuste le .gitignore pour ignorer l'état d'exécution IdeA
(.ideai/permissions.json) au même titre que le reste du runtime.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

lib/application/app_bootstrap.dart

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+import '../infrastructure/local/app_database.dart';
+
+final class AppBootstrap {
+  AppBootstrap._({required this.database});
+
+  final AppDatabase database;
+
+  static Future<AppBootstrap> create() async {
+    final database = AppDatabase.open();
+    await database.customSelect('SELECT 1').get();
+
+    return AppBootstrap._(database: database);
+  }
+
+  Future<void> dispose() => database.close();
+}

lib/application/application.dart

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+/// Application layer entry point.
+///
+/// This layer owns use cases and ports. It may depend on domain, but concrete
+/// adapters are wired only from the composition root.
+library;

lib/domain/domain.dart

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+/// Domain layer entry point.
+///
+/// Keep this layer free from Flutter, Drift, platform APIs, and IO.
+library;

lib/infrastructure/infrastructure.dart

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+/// Infrastructure layer entry point.
+///
+/// Concrete adapters live here and depend inward on application/domain
+/// contracts.
+library;

lib/infrastructure/local/app_database.dart

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+import 'package:drift/drift.dart';
+import 'package:drift_flutter/drift_flutter.dart';
+
+final class AppDatabase extends GeneratedDatabase {
+  AppDatabase(DatabaseConnection connection) : super.connect(connection);
+
+  factory AppDatabase.open() {
+    return AppDatabase(
+      driftDatabase(
+        name: 'gametime',
+        native: const DriftNativeOptions(
+          shareAcrossIsolates: true,
+        ),
+      ),
+    );
+  }
+
+  @override
+  int get schemaVersion => 1;
+
+  @override
+  Iterable<TableInfo<Table, dynamic>> get allTables => const [];
+}

lib/infrastructure/local/local.dart

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+export 'app_database.dart';

lib/main.dart

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+import 'package:flutter/material.dart';
+
+import 'application/app_bootstrap.dart';
+import 'presentation/game_time_app.dart';
+
+Future<void> main() async {
+  WidgetsFlutterBinding.ensureInitialized();
+
+  final bootstrap = await AppBootstrap.create();
+
+  runApp(GameTimeApp(bootstrap: bootstrap));
+}

lib/presentation/game_time_app.dart

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+import 'package:flutter/material.dart';
+
+import '../application/app_bootstrap.dart';
+
+final class GameTimeApp extends StatelessWidget {
+  const GameTimeApp({required this.bootstrap, super.key});
+
+  final AppBootstrap bootstrap;
+
+  @override
+  Widget build(BuildContext context) {
+    return MaterialApp(
+      title: 'GameTime',
+      theme: ThemeData(
+        colorScheme: ColorScheme.fromSeed(seedColor: const Color(0xFF0E7C66)),
+        useMaterial3: true,
+      ),
+      home: const Scaffold(
+        body: SizedBox.shrink(),
+      ),
+    );
+  }
+}

lib/presentation/presentation.dart

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+export 'game_time_app.dart';