Add monitoring service and database schema

- Implement monitoring service with heartbeat, lease tasks, resume tasks, and task result handling.
- Create monitoring time utilities for business date calculations.
- Add unit tests for date window resolution and business day handling.
- Define database schema for monitoring-related tables including quotas, daily reports, and task management.
- Establish migration scripts for creating and dropping monitoring tables.

apps/admin-web/src/lib/errors.ts

@@ -40,6 +40,12 @@ const errorMessageMap: Record<string, string> = {
   publisher_plugin_empty_response: "浏览器插件未返回数据，请刷新当前页面后重试",
   publisher_plugin_invalid_response: "浏览器插件返回了无效数据，请刷新当前页面后重试",
   publisher_plugin_unknown_error: "浏览器插件调用失败，请稍后重试",
+  monitoring_plugin_timeout: "监测插件响应超时，请稍后重试",
+  monitoring_plugin_invalid_response: "监测插件返回了无效数据，请稍后重试",
+  monitoring_plugin_unknown_error: "监测插件调用失败，请稍后重试",
+  monitoring_plugin_required: "请先安装并打开浏览器插件",
+  monitoring_plugin_register_required: "浏览器插件正在初始化，请稍后重试",
+  installation_offline: "监测插件离线，请打开浏览器插件后重试",
   network_error: "网络连接失败，请稍后重试",
   unknown_error: "发生未知错误",
 };