refactor(q1): src/api 全量清零 any + types/monitor 扩展输入 DTO

ROADMAP Q1 推进（前端类型安全治理 in_progress）:

- src/api/ 整个目录 any 清零（含 monitor/ deploy/ 子目录 12+ 文件）
  create/update 入参 any -> Record<string, unknown> / object
  mock 桩 trace/grafana 对接 types/ 标准类型（Trace/GrafanaDashboard）
  典型接口 LdapFormData/ProbeForm 等强类型表单用 object 接收
- types/monitor.ts 扩展 ~150 行接口:
  ZabbixDatasource / AlertSilence / 7 个输入 DTO
  Trace / TraceSpan / TraceServiceMetrics / GrafanaDashboard / DashboardPanel
  HealthProbeInput

验证:
- 整个 src/api/ 目录 any=0
- ESLint no-explicit-any: 995 -> 937 (本项目此轮贡献 -58)
- tsc -b 零错误, npm run build ✓ (17.06s)
- API 回归 8/8 核心端点通过, Docker 部署 healthy

backend/static/assets/approval-CXJJf5q6.js

@@ -0,0 +1 @@
+import{h as a}from"./index-o4rKtKfJ.js";const t={list:async e=>a.get("/approval-workflows",e),get:async e=>a.get(`/approval-workflows/${e}`),create:async e=>a.post("/approval-workflows",e),update:async(e,s)=>a.put(`/approval-workflows/${e}`,s),delete:async e=>a.delete(`/approval-workflows/${e}`),setDefault:async e=>a.put(`/approval-workflows/${e}/default`),getSteps:async e=>a.get(`/approval-workflows/${e}/steps`)},o={getTemplates:async e=>a.get("/approvals/templates",e),getTemplate:async e=>a.get(`/approvals/templates/${e}`),createTemplate:async e=>a.post("/approvals/templates",e),updateTemplate:async(e,s)=>a.put(`/approvals/templates/${e}`,s),deleteTemplate:async e=>a.delete(`/approvals/templates/${e}`),getProcesses:async e=>a.get("/approvals/processes",e),createProcess:async e=>a.post("/approvals/processes",e),approveProcess:async(e,s)=>a.post(`/approvals/processes/${e}/approve`,{comment:s}),rejectProcess:async(e,s)=>a.post(`/approvals/processes/${e}/reject`,{comment:s})};export{t as a,o as b};