refactor(db): 将数据库操作异步化

- 将所有 session.add() 改为 await session.add()
- 将所有 session.commit() 改为 await session.commit()
- 将 session.refresh() 改为 await session.refresh()

src/common/database/sqlalchemy_models.py

@@ -676,7 +676,6 @@ async def get_db_session() -> AsyncGenerator[AsyncSession, None]:
             raise RuntimeError("Database session not initialized")
         session = SessionLocal()
         yield session
-        # await session.commit()
     except Exception:
         if session:
             await session.rollback()