refactor(frontend): API 子模块化、大组件拆分与 TanStack Query hooks

P1: kubernetes/system API 拆为子目录模块，导出工具下沉到 lib/export-utils，
    http 统一 buildApiUrl/getWsBase；HostMonitor、DeploymentEdit* 拆至子组件。

P2: 新增 hooks/api（queryKeys、useTerminalSessions、useHostMonitor），
    TerminalSessionsTab 与 HostMonitor 接入 TanStack Query。

P3: 保留 services/api 路径，未迁移至 api/ 目录。

backend/static/assets/automation-WG-s4QEv.js

@@ -0,0 +1 @@
+import{h as e}from"./index-Dmami9WE.js";const c={getJobs:async t=>e.get("/cron-jobs",t),getJob:async t=>e.get(`/cron-jobs/${t}`),createJob:async t=>e.post("/cron-jobs",t),updateJob:async(t,r)=>e.put(`/cron-jobs/${t}`,r),deleteJob:async t=>e.delete(`/cron-jobs/${t}`),toggleJob:async t=>e.post(`/cron-jobs/${t}/toggle`),executeJob:async t=>e.post(`/cron-jobs/${t}/execute`),batchDelete:async t=>e.delete("/cron-jobs/batch-delete",{ids:t})},n={getScripts:async t=>e.get("/scripts",t),getScript:async t=>e.get(`/scripts/${t}`),createScript:async t=>e.post("/scripts",t),updateScript:async(t,r)=>e.put(`/scripts/${t}`,r),deleteScript:async t=>e.delete(`/scripts/${t}`),batchDelete:async t=>e.post("/scripts/batch-delete",{ids:t}),executeScript:async t=>e.post(`/scripts/${t}/execute`)},o={getExecutions:async t=>e.get("/task-executions",t)};export{c,n as s,o as t};