Initial commit: AudiOhm - Alternative Spotify avec streaming YouTube

Backend:
- FastAPI avec PostgreSQL et Redis
- Authentification JWT complète
- API REST pour musique, playlists, recherche
- Streaming audio via yt-dlp
- SQLAlchemy 2.0 async

Frontend:
- Flutter avec thème néon cyberpunk
- State management Riverpod
- Layout adaptatif desktop/mobile
- Lecteur audio avec mini-player

Infrastructure:
- Docker Compose (PostgreSQL + Redis)
- Scripts d'installation automatisés
- Scripts de build pour exécutables

Fichiers ajoutés:
- BUILD_CLIENT_*.bat/sh: Scripts de compilation
- BUILD_CLIENT_README.md: Documentation compilation
- CHECK_FLUTTER.sh: Vérificateur d'environnement
- requirements.txt mis à jour pour Python 3.13
- Modèles SQLAlchemy corrigés (metadata -> extra_metadata)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

frontend/.gitignore

@@ -0,0 +1,55 @@
+# Miscellaneous
+*.class
+*.log
+*.pyc
+*.swp
+.DS_Store
+.atom/
+.buildlog/
+.history
+.svn/
+migrate_working_dir/
+
+# IntelliJ related
+*.iml
+*.ipr
+*.iws
+.idea/
+
+# VSCode related
+.vscode/
+
+# The .vscode folder contains launch configuration and tasks you configure in
+# VS Code which you may wish to be included in version control, so this line
+# is commented out by default.
+#.vscode/
+
+# Flutter/Dart/Pub related
+**/doc/api/
+**/ios/Flutter/.last_build_id
+.dart_tool/
+.flutter-plugins
+.flutter-plugins-dependencies
+.packages
+.pub-cache/
+.pub/
+/build/
+
+# Symbolication related
+app.*.symbols
+
+# Obfuscation related
+app.*.map.json
+
+# Android Studio will place build artifacts here
+/android/app/debug
+/android/app/profile
+/android/app/release
+
+# Coverage
+coverage/
+
+# Generated files
+*.freezed.dart
+*.g.dart
+*.mocks.dart