feat(front): 网关台账前端——台账/路由/目标三页+重载注册表

- 与 notice 同形态：hash 路由 + TablePageAlovaNew 分页 + alova 信封分支
- API 层手写（文档端点仅容器网内可达，api:gen 无通路），键名对齐后端 operationId
- 审计修复：outDir 回 dist 根（CI zip 根须含 html）、main.ts 显式引入 @/api 挂载全局 Apis、
  保存失败重拉回滚、路由页补只读 timeout/bodyLimit 列、详情弹窗 backendCode 恒空说明

src/assets/icons/tree/icon-5.svg

@@ -0,0 +1,14 @@
+<svg width="18" height="18" viewBox="0 0 18 18" fill="none" xmlns="http://www.w3.org/2000/svg">
+<g clip-path="url(#clip0_7225_67990)">
+<path d="M18 0H0V18H18V0Z" fill="white" fill-opacity="0.01"/>
+<path fill-rule="evenodd" clip-rule="evenodd" d="M3 5.625H15L13.875 16.5H4.125L3 5.625Z" stroke="#5B6871" stroke-width="1.125" stroke-linejoin="round"/>
+<path d="M7.50073 9.37598V13.1261" stroke="#5B6871" stroke-width="1.125" stroke-linecap="round"/>
+<path d="M10.5009 9.375V13.1241" stroke="#5B6871" stroke-width="1.125" stroke-linecap="round"/>
+<path d="M4.5 5.62496L10.6216 1.125L13.5 5.625" stroke="#5B6871" stroke-width="1.125" stroke-linecap="round" stroke-linejoin="round"/>
+</g>
+<defs>
+<clipPath id="clip0_7225_67990">
+<rect width="18" height="18" fill="white"/>
+</clipPath>
+</defs>
+</svg>