fix(frontend): 修复 manualChunks 循环依赖导致生产白屏

仅拆分 codemirror/xterm/icons 独立库，避免 vendor-charts 与 vendor-react 循环引用。

backend/static/assets/site-B4364hqV.js

@@ -0,0 +1 @@
+import{h as s}from"./index-BZzvNKfa.js";const r={getStats:async()=>s.get("/site/stats"),getTasks:async()=>s.get("/site/tasks"),createTask:async t=>s.post("/site/tasks",t),deleteTask:async t=>s.delete(`/site/tasks/${t}`),toggleTask:async(t,e)=>s.put(`/site/tasks/${t}`,{enabled:e})};export{r as s};