修复爬虫验证器session生命周期问题，将validator上下文管理器移至tasks_manager内部，确保session在整个验证过程中保持打开状态；同时修改CORS配置支持所有来源访问

api_server.py

@@ -393,8 +393,7 @@ async def start_crawler(request: CrawlerRequest, _permission: str = Depends(requ
         tasks_manager.set_callbacks(progress_callback, status_callback)
         
         db = SQLiteManager()
-        async with ProxyValidator(max_concurrency=200) as validator:
-            asyncio.create_task(tasks_manager.start_task(db, validator, request.num_validators))
+        asyncio.create_task(tasks_manager.start_task(db, request.num_validators))
         
         return {"code": 200, "message": "爬虫任务开始啦~", "data": None}
     except Exception as e:

tasks_manager.py

@@ -111,7 +111,7 @@ class TasksManager:
             await self._notify_status('validating_done', f'验证完成啦，入库 {verified_count} 个代理~')
             logger.info(f"验证协程完成，入库 {verified_count} 个代理。")
 
-    async def start_task(self, db: SQLiteManager, validator: ProxyValidator, num_validators: int = 50):
+    async def start_task(self, db: SQLiteManager, num_validators: int = 50):
         if self.is_running:
             await self._notify_status('error', '任务正在运行中呢~')
             return False
@@ -128,6 +128,7 @@ class TasksManager:
         
         await self._notify_status('running', '任务开始啦~')
         
+        async with ProxyValidator(max_concurrency=200) as validator:
             crawler_task = asyncio.create_task(self.run_crawler())
             self.validator_tasks = [asyncio.create_task(self.run_validator(db, validator)) for _ in range(num_validators)]