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/routes/scheduler.py

@@ -5,7 +5,6 @@ from app.repositories.settings_repo import SettingsRepository
 from app.core.db import get_db
 from app.api.deps import get_scheduler_service
 from app.api.common import success_response, error_response
-from app.core.log import logger
 
 router = APIRouter(prefix="/api/scheduler", tags=["scheduler"])
 settings_repo = SettingsRepository()
@@ -22,38 +21,26 @@ async def _save_auto_validate_setting(enabled: bool):
 
 @router.post("/start")
 async def start_scheduler(scheduler: SchedulerService = Depends(get_scheduler_service)):
-    try:
-        if scheduler.running:
-            return success_response("验证调度器已在运行", {"running": True})
-        await scheduler.start()
-        await _save_auto_validate_setting(True)
-        return success_response("验证调度器已启动", {"running": True})
-    except Exception as e:
-        logger.error(f"Start scheduler failed: {e}")
-        return error_response(f"启动调度器失败: {str(e)}", 500)
+    if scheduler.running:
+        return success_response("验证调度器已在运行", {"running": True})
+    await scheduler.start()
+    await _save_auto_validate_setting(True)
+    return success_response("验证调度器已启动", {"running": True})
 
 
 @router.post("/stop")
 async def stop_scheduler(scheduler: SchedulerService = Depends(get_scheduler_service)):
-    try:
-        if not scheduler.running:
-            return success_response("验证调度器未运行", {"running": False})
-        await scheduler.stop()
-        await _save_auto_validate_setting(False)
-        return success_response("验证调度器已停止", {"running": False})
-    except Exception as e:
-        logger.error(f"Stop scheduler failed: {e}")
-        return error_response(f"停止调度器失败: {str(e)}", 500)
+    if not scheduler.running:
+        return success_response("验证调度器未运行", {"running": False})
+    await scheduler.stop()
+    await _save_auto_validate_setting(False)
+    return success_response("验证调度器已停止", {"running": False})
 
 
 @router.post("/validate-now")
 async def validate_now(scheduler: SchedulerService = Depends(get_scheduler_service)):
-    try:
-        await scheduler.validate_all_now()
-        return success_response("已开始全量验证", {"started": True})
-    except Exception as e:
-        logger.error(f"Validate now failed: {e}")
-        return error_response(f"启动验证失败: {str(e)}", 500)
+    await scheduler.validate_all_now()
+    return success_response("已开始全量验证", {"started": True})
 
 
 @router.get("/status")