chore: 初始化uniapp前端项目基础框架

新增项目配置、静态资源、工具类、状态管理、API接口、组件库集成等全套基础代码，完成项目初始化搭建

frontend/app/src/api/module_system/position.ts

@@ -0,0 +1,47 @@
+import type { BatchSetStatus } from './user'
+import { http } from '@/http'
+
+const SYSTEM_BASE = '/system'
+
+/**
+ * 岗位管理 API
+ * 与 web 端 module_system/position.ts 对齐（完整字段定义）
+ */
+export const PositionAPI = {
+  getPage(params?: Record<string, any>): Promise<PageResult<PositionItem>> {
+    return http.Get(`${SYSTEM_BASE}/position/list`, params)
+  },
+  getDetail(id: number): Promise<PositionItem> {
+    return http.Get(`${SYSTEM_BASE}/position/detail/${id}`)
+  },
+  create(data: PositionForm): Promise<PositionItem> {
+    return http.Post(`${SYSTEM_BASE}/position/create`, data)
+  },
+  update(id: number, data: PositionForm): Promise<PositionItem> {
+    return http.Put(`${SYSTEM_BASE}/position/update/${id}`, data)
+  },
+  remove(ids: number[]): Promise<void> {
+    return http.Delete(`${SYSTEM_BASE}/position/delete`, { ids: JSON.stringify(ids) })
+  },
+  batchStatus(data: BatchSetStatus): Promise<void> {
+    return http.Patch(`${SYSTEM_BASE}/position/status/batch`, data)
+  },
+  getOptions(): Promise<{ value: number, label: string }[]> {
+    return http.Get(`${SYSTEM_BASE}/position/options`)
+  },
+  exportPositions(params?: Record<string, any>): Promise<unknown> {
+    return http.Post(`${SYSTEM_BASE}/position/export`, params)
+  },
+}
+
+export interface PositionForm extends BaseFormType {
+  name?: string
+  code?: string
+  order?: number
+  status?: number
+  description?: string
+}
+
+export interface PositionItem extends BaseType, PositionForm {
+  id: number
+}