Using alembic

backend/app/main.py

@@ -1,12 +1,34 @@
 from fastapi import FastAPI
 from fastapi.middleware.cors import CORSMiddleware
+from contextlib import asynccontextmanager
 from .core.config import settings
 from .api.v1 import api_router
+from .core.database import get_db
+from .core.init_db import init_default_data
+from sqlalchemy.orm import Session
+
+
+@asynccontextmanager
+async def lifespan(app: FastAPI):
+    """Handle startup and shutdown events"""
+    # Startup
+    db: Session = next(get_db())
+    try:
+        init_default_data(db)
+    finally:
+        db.close()
+    
+    yield
+    
+    # Shutdown (if needed)
+    pass
+
 
 app = FastAPI(
     title=settings.APP_NAME,
     version=settings.APP_VERSION,
-    openapi_url=f"{settings.API_V1_PREFIX}/openapi.json"
+    openapi_url=f"{settings.API_V1_PREFIX}/openapi.json",
+    lifespan=lifespan
 )
 
 # Set up CORS