feat(push-task): connect notification module with task module

- Add task_type to w_push_events table and GORM models.
- Implement OnTaskCompleted callback hook in task executor to avoid circular dependencies.
- Implement task listener in push package to trigger notifications on task completion.
- Automatically resolve User objects from payload and results.
- Enhance UI to select task completed events and preview default templates.
- Update Swagger documentation.

docs/swagger.yaml

@@ -361,6 +361,9 @@ definitions:
         items:
           type: string
         type: array
+      task_type:
+        description: 关联的异步任务类型
+        type: string
       template:
         description: 消息模板 JSON
         type: string
@@ -715,10 +718,11 @@ definitions:
         items:
           type: string
         type: array
+      task_type:
+        description: 关联的异步任务类型
+        type: string
       template:
         type: string
-    required:
-    - event_key
     type: object
   push.Definition:
     properties:
@@ -2268,7 +2272,7 @@ paths:
     post:
       consumes:
       - application/json
-      description: 绑定系统内置事件、推送渠道、接收目标并创建通知事件配置，需要管理员权限
+      description: 绑定系统内置事件或异步任务、推送渠道、接收目标并创建通知事件配置，需要管理员权限
       parameters:
       - description: 创建参数
         in: body