move app to gatehouse-app

gatehouse_app/extensions.py

@@ -0,0 +1,26 @@
+"""Flask extensions initialization."""
+from flask_sqlalchemy import SQLAlchemy
+from flask_migrate import Migrate
+from flask_bcrypt import Bcrypt
+from flask_cors import CORS
+from flask_marshmallow import Marshmallow
+from flask_limiter import Limiter
+from flask_limiter.util import get_remote_address
+from flask_session import Session
+import redis
+
+# Initialize extensions
+db = SQLAlchemy()
+migrate = Migrate()
+bcrypt = Bcrypt()
+cors = CORS()
+ma = Marshmallow()
+limiter = Limiter(
+    key_func=get_remote_address,
+    default_limits=["100 per hour"],
+    storage_uri="memory://",  # Will be overridden by config
+)
+session = Session()
+
+# Redis client - will be initialized with app
+redis_client = None