fix: auto-fix code issues (cron)

- 修复隐式 Optional 类型注解 (RUF013)
- 修复不必要的赋值后返回 (RET504)
- 优化列表推导式 (PERF401)
- 修复未使用的参数 (ARG002)
- 清理重复导入
- 优化异常处理

backend/workflow_manager.py

@@ -264,7 +264,9 @@ class WebhookNotifier:
             secret_enc = config.secret.encode("utf-8")
             string_to_sign = f"{timestamp}\n{config.secret}"
             hmac_code = hmac.new(
-                secret_enc, string_to_sign.encode("utf-8"), digestmod=hashlib.sha256,
+                secret_enc,
+                string_to_sign.encode("utf-8"),
+                digestmod=hashlib.sha256,
             ).digest()
             sign = urllib.parse.quote_plus(base64.b64encode(hmac_code))
             url = f"{config.url}&timestamp = {timestamp}&sign = {sign}"
@@ -497,7 +499,10 @@ class WorkflowManager:
             conn.close()
 
     def list_workflows(
-        self, project_id: str = None, status: str = None, workflow_type: str = None,
+        self,
+        project_id: str | None = None,
+        status: str = None,
+        workflow_type: str = None,
     ) -> list[Workflow]:
         """列出工作流"""
         conn = self.db.get_conn()
@@ -518,7 +523,8 @@ class WorkflowManager:
             where_clause = " AND ".join(conditions) if conditions else "1 = 1"
 
             rows = conn.execute(
-                f"SELECT * FROM workflows WHERE {where_clause} ORDER BY created_at DESC", params,
+                f"SELECT * FROM workflows WHERE {where_clause} ORDER BY created_at DESC",
+                params,
             ).fetchall()
 
             return [self._row_to_workflow(row) for row in rows]
@@ -780,7 +786,8 @@ class WorkflowManager:
         conn = self.db.get_conn()
         try:
             row = conn.execute(
-                "SELECT * FROM webhook_configs WHERE id = ?", (webhook_id,),
+                "SELECT * FROM webhook_configs WHERE id = ?",
+                (webhook_id,),
             ).fetchone()
 
             if not row:
@@ -962,9 +969,9 @@ class WorkflowManager:
 
     def list_logs(
         self,
-        workflow_id: str = None,
-        task_id: str = None,
-        status: str = None,
+        workflow_id: str | None = None,
+        task_id: str | None = None,
+        status: str | None = None,
         limit: int = 100,
         offset: int = 0,
     ) -> list[WorkflowLog]:
@@ -1074,7 +1081,7 @@ class WorkflowManager:
 
     # ==================== Workflow Execution ====================
 
-    async def execute_workflow(self, workflow_id: str, input_data: dict = None) -> dict:
+    async def execute_workflow(self, workflow_id: str, input_data: dict | None = None) -> dict:
         """执行工作流"""
         workflow = self.get_workflow(workflow_id)
         if not workflow:
@@ -1159,7 +1166,10 @@ class WorkflowManager:
             raise
 
     async def _execute_tasks_with_deps(
-        self, tasks: list[WorkflowTask], input_data: dict, log_id: str,
+        self,
+        tasks: list[WorkflowTask],
+        input_data: dict,
+        log_id: str,
     ) -> dict:
         """按依赖顺序执行任务"""
         results = {}
@@ -1413,7 +1423,10 @@ class WorkflowManager:
     # ==================== Notification ====================
 
     async def _send_workflow_notification(
-        self, workflow: Workflow, results: dict, success: bool = True,
+        self,
+        workflow: Workflow,
+        results: dict,
+        success: bool = True,
     ) -> None:
         """发送工作流执行通知"""
         if not workflow.webhook_ids: