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/tasks-CEM7_KIT.js

@@ -0,0 +1 @@
+import{P as a}from"./index-akVRSJTL.js";async function c(){const{data:t}=await a.get("/server/info");return t}async function e(){const{data:t}=await a.get("/docker_stats");return t}async function o(){const{data:t}=await a.get("/task/stats");return t}async function r(){const{data:t}=await a.get("/task/running");return t}async function i(t){const{data:s}=await a.get("/task/logs",{params:t});return s}async function f(t){const{data:s}=await a.post("/task/logs/clear",{days:t});return s}export{r as a,c as b,e as c,i as d,f as e,o as f};