Fix SQL expression in health endpoint using text() function

app/routes/health.py

@@ -1,5 +1,6 @@
 from fastapi import APIRouter, Depends
 from sqlalchemy.orm import Session
+from sqlalchemy import text
 from datetime import datetime
 
 from app.database import get_db
@@ -15,7 +16,7 @@ def health_check(db: Session = Depends(get_db)):
     # Test database connection
     try:
         # Just execute a simple query
-        db.execute("SELECT 1")
+        db.execute(text("SELECT 1"))
         db_status = "healthy"
     except Exception as e:
         db_status = f"unhealthy: {str(e)}"