feat: add admin endpoint to reset Postgres schema and Qdrant collection via Alembic migrations

backend/src/routers/admin.py

@@ -14,7 +14,7 @@ router = APIRouter()
 
 @router.post("/reset-db")
 async def reset_db(password: str = None):
-    if password != "ketan@D048":
+    if password != "ketanD048":
         raise HTTPException(status_code=403, detail="Invalid reset password.")
     
     settings = get_settings()