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

app/api/lifespan.py

@@ -6,7 +6,7 @@ from app.core.db import init_db, get_db
 from app.core.config import settings as app_settings
 from app.core.log import logger
 from app.api.deps import create_scheduler_service
-from app.repositories.settings_repo import SettingsRepository
+from app.repositories.settings_repo import SettingsRepository, DEFAULT_SETTINGS
 
 settings_repo = SettingsRepository()
 
@@ -17,33 +17,48 @@ async def lifespan(app: FastAPI):
     # 初始化数据库
     await init_db()
 
-    # 创建调度器并挂载到 app.state
-    scheduler_service = create_scheduler_service()
+    # 加载设置并决定是否启动调度器
+    db_settings = DEFAULT_SETTINGS.copy()
+    try:
+        async with get_db() as db:
+            db_settings = await settings_repo.get_all(db)
+    except Exception as e:
+        logger.error(f"Failed to load settings on startup: {e}")
+
+    # 创建调度器并挂载到 app.state（使用 DB 设置覆盖默认值）
+    scheduler_service = create_scheduler_service(db_settings)
     app.state.scheduler_service = scheduler_service
     app.state.validation_queue = scheduler_service.validation_queue
 
-    # 加载设置并决定是否启动调度器
-    try:
-        async with get_db() as db:
-            settings = await settings_repo.get_all(db)
-        scheduler_service.interval_minutes = settings.get(
-            "validate_interval_minutes", app_settings.validator_timeout
-        )
-        if settings.get("auto_validate", True):
+    if db_settings.get("auto_validate", True):
+        try:
             await scheduler_service.start()
-    except Exception as e:
-        logger.error(f"Failed to load settings on startup: {e}")
+        except Exception as e:
+            logger.error(f"Failed to start scheduler on startup: {e}")
 
     logger.info("API server started")
     yield
 
     # 关闭调度器
-    if scheduler_service._validate_task and not scheduler_service._validate_task.done():
-        scheduler_service._validate_task.cancel()
-        try:
-            await scheduler_service._validate_task
-        except asyncio.CancelledError:
-            pass
+    scheduler_service.cancel_validate_task()
     await scheduler_service.stop()
-    await scheduler_service.validation_queue.validator.close()
+
+    # 关闭验证器 HTTP session
+    try:
+        await scheduler_service.validation_queue.validator.close()
+    except Exception:
+        pass
+
+    # 关闭所有插件的 HTTP 客户端
+    from app.core.plugin_system.registry import registry
+    for plugin in registry.list_plugins():
+        if hasattr(plugin, "close"):
+            try:
+                await plugin.close()
+            except Exception:
+                pass
+
+    # 给 aiosqlite / aiohttp 后台线程留出收尾时间
+    await asyncio.sleep(0.1)
+
     logger.info("API server shutdown")