fix sqlalchemy dep loading in deps.py

src/basic_memory/api/app.py

@@ -1,25 +1,34 @@
 """FastAPI application for basic-memory knowledge graph API."""
 
+from contextlib import asynccontextmanager
+
 from fastapi import FastAPI
 from loguru import logger
 
+from basic_memory import db
 from .routers import documents
 from .routers import knowledge
 from .routers import discovery
 
+
+@asynccontextmanager
+async def lifespan(app: FastAPI):
+    """Lifecycle manager for the FastAPI app."""
+    logger.info("Starting Basic Memory API")
+    yield
+    logger.info("Shutting down Basic Memory API")
+    await db.shutdown_db()
+
+
 # Initialize FastAPI app
 app = FastAPI(
-    title="Basic Memory API", description="Knowledge graph API for basic-memory", version="0.1.0"
+    title="Basic Memory API",
+    description="Knowledge graph API for basic-memory",
+    version="0.1.0",
+    lifespan=lifespan,
 )
 
 # Include routers
 app.include_router(knowledge.router)
 app.include_router(documents.router)
 app.include_router(discovery.router)
-
-
-# Add startup event
-@app.on_event("startup")
-async def startup_event():
-    """Log when the API starts."""
-    logger.info("Starting Basic Memory API")