整理了初始化过程，现在更容易被继承了。

sync_state_machine/datasource/datasource.py

@@ -88,6 +88,13 @@ class BaseDataSource(ABC):
         self._poll_interval = max(0, poll_interval)
         self._sm_runtime: Optional[StateMachineRuntime] = None
 
+    def set_target_project_ids(self, target_project_ids: List[str]) -> None:
+        self._target_project_ids = [str(item) for item in target_project_ids if str(item)]
+
+    @property
+    def target_project_ids(self) -> List[str]:
+        return list(self._target_project_ids)
+
     def _ensure_sm_runtime(self) -> StateMachineRuntime:
         if self._sm_runtime is None:
             cfg_path = Path(__file__).resolve().parents[1] / "config" / "node_state_machine.yaml"
@@ -957,6 +964,10 @@ class BaseDataSource(ABC):
         
         return summary
 
+    async def initialize(self) -> None:
+        """初始化数据源资源（子类可覆盖）"""
+        return None
+
     async def close(self) -> None:
         """关闭数据源资源（子类可覆盖以实现特定的清理逻辑）"""
-        pass  # 基类默认空实现
+        return None