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/deps.py

@@ -25,21 +25,29 @@ def get_validation_queue(request: Request) -> ValidationQueue:
     return request.app.state.validation_queue
 
 
-def create_scheduler_service() -> SchedulerService:
-    """在应用启动时创建 SchedulerService（非请求上下文）"""
+def create_scheduler_service(db_settings: dict | None = None) -> SchedulerService:
+    """在应用启动时创建 SchedulerService（非请求上下文）
+    
+    db_settings 来自数据库持久化设置，用于覆盖 .env / 默认值。
+    """
+    db_settings = db_settings or {}
     validator = ValidatorService(
-        timeout=app_settings.validator_timeout,
-        connect_timeout=app_settings.validator_connect_timeout,
-        max_concurrency=app_settings.validator_max_concurrency,
+        timeout=db_settings.get("validation_timeout", app_settings.validator_timeout),
+        connect_timeout=db_settings.get("connect_timeout", app_settings.validator_connect_timeout),
+        max_concurrency=db_settings.get("default_concurrency", app_settings.validator_max_concurrency),
     )
     proxy_repo = ProxyRepository()
     queue = ValidationQueue(
         validator=validator,
         proxy_repo=proxy_repo,
-        worker_count=app_settings.validator_max_concurrency,
+        worker_count=db_settings.get("default_concurrency", app_settings.validator_max_concurrency),
         score_valid=app_settings.score_valid,
         score_invalid=app_settings.score_invalid,
         score_min=app_settings.score_min,
         score_max=app_settings.score_max,
     )
-    return SchedulerService(validation_queue=queue, proxy_repo=proxy_repo)
+    svc = SchedulerService(validation_queue=queue, proxy_repo=proxy_repo)
+    svc.interval_minutes = db_settings.get(
+        "validate_interval_minutes", app_settings.validator_timeout
+    )
+    return svc