cache busting on CSS files

app.py

@@ -24,6 +24,7 @@ def create_app():
     app.config['SQLALCHEMY_TRACK_MODIFICATIONS'] = False
     app.config['SECRET_KEY'] = os.getenv('SECRET_KEY', 'your-secure-secret-key-here')
     app.config['UPLOAD_FOLDER'] = os.path.join(app.root_path, 'static', 'uploads')
+    app.config['CSS_VERSION'] = os.getenv('CSS_VERSION', '1.0.0')  # Add CSS version for cache busting
 
     # Initialize extensions
     db.init_app(app)
@@ -36,6 +37,10 @@ def create_app():
     def inject_csrf_token():
         return dict(csrf_token=generate_csrf())
 
+    @app.context_processor
+    def inject_config():
+        return dict(config=app.config)
+
     # User loader for Flask-Login
     @login_manager.user_loader
     def load_user(user_id):