init: 整合项目（dashboard + www + docs）

www/web/app/composables/useRequest.ts

@@ -0,0 +1,38 @@
+/**
+ * 统一请求封装（基于 Nuxt 内置 ofetch）
+ * 响应格式约定：{ code, data, message }，成功码 '0000'
+ */
+
+interface ApiResponse<T = unknown> {
+  code: string;
+  data: T;
+  message: string;
+}
+
+export function useRequest() {
+  const config = useRuntimeConfig();
+  const baseURL = config.public.apiBaseUrl as string;
+
+  async function request<T = unknown>(url: string, options?: Parameters<typeof $fetch>[1]): Promise<T> {
+    const res = await $fetch<ApiResponse<T>>(url, {
+      baseURL,
+      ...options
+    });
+
+    if (res.code !== '0000') {
+      throw new Error(res.message || 'Request failed');
+    }
+
+    return res.data;
+  }
+
+  function get<T = unknown>(url: string, params?: Record<string, unknown>) {
+    return request<T>(url, { method: 'GET', params });
+  }
+
+  function post<T = unknown>(url: string, body?: Record<string, unknown>) {
+    return request<T>(url, { method: 'POST', body });
+  }
+
+  return { request, get, post };
+}