Cleanup: remove unused code, add CI/CD workflow

- Remove flask-sse, Redis (unused)
- Remove ImageService, file_utils (unused)
- Remove /download-posters route (frontend handles download client-side)
- Remove LETTERBOXD_API_URL, secure_filename (dead imports)
- Fix duplicate TMDBService instantiation
- Simplify config.py (remove REDIS_URL)
- Fix gunicorn user home dir for control socket
- Add .gitignore for __pycache__
- Add .gitea/workflows/deploy.yml for tag-based CI/CD

config.py

@@ -1,21 +1,14 @@
 import os
 
 class Config:
-    # Configuration générale
     SECRET_KEY = os.environ.get('SECRET_KEY', 'dev_key')
     DEBUG = False
     TESTING = False
-    REDIS_URL = os.environ.get("REDIS_URL", "redis://localhost:6379")
 
 class DevelopmentConfig(Config):
     DEBUG = True
-    # Configuration pour le développement local
-    REDIS_URL = "redis://localhost:6379"
 
 class ProductionConfig(Config):
-    # Configuration pour la production (Render, etc.)
-    REDIS_URL = os.environ.get("REDIS_URL")
-    # Peut désactiver le debug mode pour la prod
     DEBUG = False
 
 config = {