refactor(frontend): services/api 迁至 src/api，http 迁至 utils/request

对齐 Vue 后台惯例：
- src/api/          域 API（原 services/api）
- src/utils/request.ts  HTTP 封装（原 services/http.ts）
- src/utils/export.ts  客户端导出工具
- src/utils/index.ts   工具统一出口

全局导入改为 @/api 与 @/utils/request，tsc + build 通过。

frontend/src/api/server.ts

@@ -0,0 +1,104 @@
+// 服务器/资产/区域/资源型号
+// 从 services/api.ts 拆分 — Q3 api.ts 模块化
+
+import { http, type ListResponse } from '@/utils/request';
+
+export const serverApi = {
+  getServers: async (params?: { page?: number; page_size?: number; keyword?: string; status?: string }) => {
+    return http.get<ListResponse>('/servers', params);
+  },
+  getServerDetail: async (id: number | string) => {
+    return http.get(`/servers/${id}`);
+  },
+  getServerStats: async () => {
+    return http.get('/servers/stats');
+  },
+  createServer: async ( data: any) => {
+    return http.post('/servers', data);
+  },
+  updateServer: async (id: number | string, data: any) => {
+    return http.put(`/servers/${id}`, data);
+  },
+  deleteServer: async (id: number | string) => {
+    return http.delete(`/servers/${id}`);
+  },
+  batchDelete: async (ids: number[]) => {
+    return http.post('/servers/batch-delete', { ids });
+  },
+  batchCreate: async (data: { servers: any[]; region_id?: string; auth_type?: string; credential_id?: number; default_port?: number }) => {
+    return http.post('/servers/batch', data);
+  },
+  getMetrics: async (_id: number | string) => {
+    // 后端暂无单机 metrics，用 dashboard metrics
+    return http.get('/dashboard/metrics');
+  },
+  // 远程安装 Agent（通过 SSH 执行安装脚本），可选传入凭据
+  installAgent: async (id: number | string, token: string, creds?: { username?: string; password?: string; ssh_key?: string; auth_type?: string }) => {
+    const body: Record<string, any> = { token };
+    if (creds) Object.assign(body, creds);
+    return http.post<{ installed: boolean; arch: string; output: string }>(`/servers/${id}/install-agent`, body);
+  },
+  // 批量远程安装 Agent
+  batchInstallAgent: async (ids: number[], token: string) => {
+    return http.post<{ total: number; success: number; results: any[] }>(`/servers/install-agent?token=${encodeURIComponent(token)}`, { server_ids: ids });
+  },
+
+  // SFTP 文件浏览
+  listFiles: async (serverId: number, path: string) => {
+    return http.get(`/servers/${serverId}/files?path=${encodeURIComponent(path)}`);
+  },
+  downloadFile: async (serverId: number, filePath: string) => {
+    return http.download(`/servers/${serverId}/files/download?path=${encodeURIComponent(filePath)}`);
+  },
+  uploadFile: async (serverId: number, dirPath: string, file: File) => {
+    const formData = new FormData();
+    formData.append('file', file);
+    return http.upload(`/servers/${serverId}/files/upload?path=${encodeURIComponent(dirPath)}`, formData);
+  },
+  deleteFile: async (serverId: number, filePath: string) => {
+    return http.delete(`/servers/${serverId}/files?path=${encodeURIComponent(filePath)}`);
+  },
+  mkdir: async (serverId: number, dirPath: string) => {
+    return http.post(`/servers/${serverId}/files/mkdir`, { path: dirPath });
+  },
+};
+
+// ==================== Kubernetes 集群 API ====================
+
+export const regionApi = {
+  list: async () => {
+    return http.get<ListResponse>('/regions');
+  },
+  create: async ( data: any) => {
+    return http.post('/regions', data);
+  },
+  update: async (id: number | string, data: any) => {
+    return http.put(`/regions/${id}`, data);
+  },
+  delete: async (id: number | string) => {
+    return http.delete(`/regions/${id}`);
+  },
+  // 批量删除 // Logan.Li
+  batchDelete: async (ids: number[]) => {
+    return http.delete('/regions/batch-delete', { ids });
+  },
+};
+
+// ==================== 资源模型 API ====================
+
+export const resourceModelApi = {
+  list: async () => {
+    return http.get<ListResponse>('/resource-models');
+  },
+  create: async ( data: any) => {
+    return http.post('/resource-models', data);
+  },
+  update: async (id: number | string, data: any) => {
+    return http.put(`/resource-models/${id}`, data);
+  },
+  delete: async (id: number | string) => {
+    return http.delete(`/resource-models/${id}`);
+  },
+};
+
+// ==================== 审计日志 API ====================