fix: 修复设置系统脱节、队列计数漂移、资源泄露等全量问题

- 统一设置系统：create_scheduler_service 读取 DB 设置覆盖默认值
- 修复 ProxyRepository.update_score 误删所有无效代理的 SQL
- ValidationQueue：修复 Worker 计数漂移与启动恢复任务饿死
- SchedulerService：移除 drain() 阻塞，主循环可正常响应 stop
- TaskService：在调度器周期内自动清理过期任务，防止内存泄漏
- lifespan/conftest：规范关闭顺序，消除 Event loop closed 警告
- Repository：异常日志增加 exc_info，今日新增按 created_at 统计
- ValidatorService：防止 HTTP session 重复关闭，移除 SOCKS 多余 close
- 前端：补全 pluginsStore.isEmpty，ProxyList 最低分数上限改为 100
- 删除 config.py 中冗余的 cors_origins_list property

tests/integration/test_plugins_api.py

@@ -117,19 +117,33 @@ class TestPluginsAPI:
 
     @pytest.mark.asyncio
     async def test_crawl_plugin(self, client):
-        """测试 POST /api/plugins/{id}/crawl"""
+        """测试 POST /api/plugins/{id}/crawl - 异步任务模式"""
+        import asyncio
         response = await client.get("/api/plugins")
         plugins = response.json()["data"]["plugins"]
         if not plugins:
             pytest.skip("没有可用的插件")
         
         plugin_id = plugins[0]["id"]
-        # 这个测试可能需要较长时间，设置较短的超时
         response = await client.post(f"/api/plugins/{plugin_id}/crawl")
         assert response.status_code == 200
         data = response.json()
         assert data["code"] == 200
-        assert "proxy_count" in data["data"]
+        assert "task_id" in data["data"]
+        
+        task_id = data["data"]["task_id"]
+        # 轮询任务状态
+        task_data = None
+        for _ in range(10):
+            await asyncio.sleep(0.3)
+            res = await client.get(f"/api/tasks/{task_id}")
+            assert res.status_code == 200
+            task_data = res.json()["data"]
+            if task_data["status"] in ("completed", "failed"):
+                break
+        
+        assert task_data is not None
+        assert task_data["status"] == "completed"
 
     @pytest.mark.asyncio
     async def test_crawl_nonexistent_plugin(self, client):
@@ -139,9 +153,24 @@ class TestPluginsAPI:
 
     @pytest.mark.asyncio
     async def test_crawl_all_plugins(self, client):
-        """测试 POST /api/plugins/crawl-all"""
+        """测试 POST /api/plugins/crawl-all - 异步任务模式"""
+        import asyncio
         response = await client.post("/api/plugins/crawl-all")
         assert response.status_code == 200
         data = response.json()
         assert data["code"] == 200
-        assert "total_crawled" in data["data"]
+        assert "task_id" in data["data"]
+        
+        task_id = data["data"]["task_id"]
+        # 轮询任务状态
+        task_data = None
+        for _ in range(10):
+            await asyncio.sleep(0.3)
+            res = await client.get(f"/api/tasks/{task_id}")
+            assert res.status_code == 200
+            task_data = res.json()["data"]
+            if task_data["status"] in ("completed", "failed"):
+                break
+        
+        assert task_data is not None
+        assert task_data["status"] == "completed"