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/services/scheduler_service.py

@@ -3,9 +3,11 @@ import asyncio
 from datetime import datetime
 from app.core.db import get_db
 from app.repositories.proxy_repo import ProxyRepository
+from app.repositories.task_repo import ValidationTaskRepository
 from app.core.tasks.queue import ValidationQueue
 from app.core.config import settings as app_settings
 from app.core.log import logger
+from app.models.domain import ProxyRaw
 
 
 class SchedulerService:
@@ -47,6 +49,11 @@ class SchedulerService:
         await self.validation_queue.stop()
         logger.info("Scheduler stopped")
 
+    def cancel_validate_task(self):
+        """取消正在执行的全量验证后台任务"""
+        if self._validate_task and not self._validate_task.done():
+            self._validate_task.cancel()
+
     async def validate_all_now(self):
         """立即执行一次全量验证（后台运行，不阻塞）"""
         if self._validate_task and not self._validate_task.done():
@@ -57,9 +64,12 @@ class SchedulerService:
         """定时循环"""
         while self.running:
             try:
+                # 清理过期任务，防止内存无限增长
+                from app.services.task_service import task_service
+                task_service.cleanup_old_tasks()
                 await self._do_validate_all()
             except Exception as e:
-                logger.error(f"Scheduler loop error: {e}")
+                logger.error(f"Scheduler loop error: {e}", exc_info=True)
             # 等待下一次
             try:
                 await asyncio.wait_for(self._stop_event.wait(), timeout=self.interval_minutes * 60)
@@ -71,16 +81,19 @@ class SchedulerService:
         try:
             logger.info("Starting scheduled validation for all proxies")
             async with get_db() as db:
+                # 清理 7 天前的验证任务记录，防止表无限增长
+                cleaned = await ValidationTaskRepository.cleanup_old(db, days=7)
+                if cleaned:
+                    logger.info(f"Cleaned up {cleaned} old validation tasks")
                 proxies = await self.proxy_repo.list_all(db)
             if not proxies:
                 logger.info("No proxies to validate")
                 return
 
             logger.info(f"Validating {len(proxies)} proxies from database")
-            from app.models.domain import ProxyRaw
-
-            # 批量提交到验证队列
+            # 批量提交到验证队列，不再阻塞等待 drain
             batch_size = 100
+            total_batches = (len(proxies) - 1) // batch_size + 1
             for i in range(0, len(proxies), batch_size):
                 if not self.running:
                     break
@@ -88,10 +101,8 @@ class SchedulerService:
                 await self.validation_queue.submit([
                     ProxyRaw(p.ip, p.port, p.protocol) for p in batch
                 ])
-                # 等待当前批次处理完
-                await self.validation_queue.drain()
-                logger.info(f"Validated batch {i//batch_size + 1}/{(len(proxies)-1)//batch_size + 1}")
+                logger.info(f"Submitted batch {i // batch_size + 1}/{total_batches}")
 
-            logger.info("Scheduled validation completed")
+            logger.info("Scheduled validation batches submitted")
         except Exception as e:
-            logger.error(f"Scheduled validation error: {e}")
+            logger.error(f"Scheduled validation error: {e}", exc_info=True)