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/credential-qfSmpSHw.js

@@ -0,0 +1 @@
+import{h as t}from"./index-BZzvNKfa.js";const a={list:e=>t.get("/credentials",e),get:e=>t.get(`/credentials/${e}`),create:e=>t.post("/credentials",e),update:(e,s)=>t.put(`/credentials/${e}`,s),delete:e=>t.delete(`/credentials/${e}`),toggleActive:(e,s)=>t.put(`/credentials/${e}`,{is_active:s})},r={assign:(e,s)=>t.post(`/servers/${e}/assign-credential`,{credential_id:s})};export{a as c,r as s};