feat: 实现基础设施层

axios 请求封装及七个业务模块 API，Pinia 状态管理（auth/system/models/tools），Mock 适配器与数据，以及流式对话、轮询、倒计时组合式函数。

frontend/src/api/modules/eval.ts

@@ -0,0 +1,27 @@
+import { get, post, put, del } from '../request'
+import type { EvalTask, Dimension } from '@/types'
+
+/** 评测任务列表 */
+export const getEvalList = () => get<EvalTask[]>('/model-eval')
+
+/** 删除评测任务 */
+export const deleteEval = (id: string | number) => del(`/model-eval/${id}`)
+
+/** 启动评测 */
+export const startEval = (data: any) => post('/model-eval/start', data)
+
+/** 评测维度列表 */
+export const getDimensionList = () => get<Dimension[]>('/dimension')
+
+/** 评测维度详情 */
+export const getDimension = (id: string | number) => get<Dimension>(`/dimension/${id}`)
+
+/** 创建维度 */
+export const createDimension = (data: Partial<Dimension>) => post('/dimension', data)
+
+/** 编辑维度 */
+export const updateDimension = (id: string | number, data: Partial<Dimension>) =>
+  put(`/dimension/${id}`, data)
+
+/** 删除维度 */
+export const deleteDimension = (id: string | number) => del(`/dimension/${id}`)