refactor: 删除版本更新功能 + 报表页自动刷新

删除版本与更新功能:
- routes/admin_api/update.py: 删除整个文件
- routes/admin_api/__init__.py: 移除 update 模块注册
- admin-frontend/src/pages/SystemPage.vue: 移除版本更新UI区块
- admin-frontend/src/api/update.js: 删除整个文件
- 删除 static/admin/assets/update-*.js

报表页自动刷新:
- admin-frontend/src/pages/ReportPage.vue: 添加 setInterval 每1秒刷新
- 在 onMounted 启动定时器，onUnmounted 清除
- 覆盖统计数据、运行中任务、系统信息等所有动态数据

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

static/admin/assets/users-CA0gIT8G.js

@@ -0,0 +1 @@
+import{P as t}from"./index-akVRSJTL.js";async function n(){const{data:s}=await t.get("/users");return s}async function o(s){const{data:a}=await t.post(`/users/${s}/approve`);return a}async function c(s){const{data:a}=await t.post(`/users/${s}/reject`);return a}async function i(s){const{data:a}=await t.delete(`/users/${s}`);return a}async function u(s,a){const{data:e}=await t.post(`/users/${s}/vip`,{days:a});return e}async function p(s){const{data:a}=await t.delete(`/users/${s}/vip`);return a}async function d(s,a){const{data:e}=await t.post(`/users/${s}/reset_password`,{new_password:a});return e}export{o as a,p as b,d as c,i as d,n as f,c as r,u as s};