feat: parametres - filtres contenu, categories, repertoire (#9, #10, #11, #12)

- Filtre recommandations (all/anime/series)
- Filtre dernieres sorties (all/anime/series)
- Toggle categories anime/series (min 1 active)
- Repertoire de telechargement personnalisable
- Migration automatique des nouvelles colonnes SQLite
- Template settings avec tous les nouveaux controles
- Validation cote backend (400 si les deux categories desactivees)

Closes #9, Closes #10, Closes #11, Closes #12

app/database.py

@@ -25,6 +25,34 @@ def create_db_and_tables():
     from app.models.settings import AppSettingsTable
     
     SQLModel.metadata.create_all(engine)
+    
+    # Add new columns to existing tables if they don't exist (SQLite workaround)
+    _ensure_columns(engine)
+
+
+def _ensure_columns(engine):
+    """Add new columns to app_settings table if they don't exist"""
+    from sqlalchemy import inspect, text
+    
+    inspector = inspect(engine)
+    if 'app_settings' not in inspector.get_table_names():
+        return
+    
+    existing = {col['name'] for col in inspector.get_columns('app_settings')}
+    
+    new_columns = {
+        'recommendations_filter': 'TEXT DEFAULT "all"',
+        'releases_filter': 'TEXT DEFAULT "all"',
+        'anime_enabled': 'BOOLEAN DEFAULT 1',
+        'series_enabled': 'BOOLEAN DEFAULT 1',
+        'download_dir': 'TEXT DEFAULT "downloads"',
+    }
+    
+    with engine.connect() as conn:
+        for col_name, col_def in new_columns.items():
+            if col_name not in existing:
+                conn.execute(text(f'ALTER TABLE app_settings ADD COLUMN {col_name} {col_def}'))
+                conn.commit()
 
 
 def get_session() -> Generator[Session, None, None]: