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/compare.ts

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+import { get, post, del } from '../request'
+import type { CompareTask, CompareModelRef } from '@/types'
+
+/** 推理/对比任务列表 */
+export const getCompareList = () => get<CompareTask[]>('/model-compare')
+
+/** 任务详情 */
+export const getCompare = (id: string | number) => get<CompareTask>(`/model-compare/${id}`)
+
+/** 创建任务 */
+export const createCompare = (data: Partial<CompareTask>) =>
+  post<{ id: string | number }>('/model-compare', data)
+
+/** 删除任务 */
+export const deleteCompare = (id: string | number) => del(`/model-compare/${id}`)
+
+/** 更新任务加载状态 */
+export const updateLoadStatus = (id: string | number, load_status: any) =>
+  post(`/model-compare/${id}/load-status`, { load_status })
+
+/** 查询任务加载状态 */
+export const getLoadStatus = (id: string | number) =>
+  get<{ all_ready: boolean; loaded_models: any[] }>(`/model-compare/${id}/load-status`)
+
+/** 停止所有旧模型服务 */
+export const stopAllModels = () => post('/model-compare/all/stop-all')
+
+/** 启动单个模型服务 */
+export const startModel = (id: string | number, data: Partial<CompareModelRef>) =>
+  post<{ pid: number; port: number }>(`/model-compare/${id}/start-model`, data)
+
+/** 按 PID 停止模型进程 */
+export const stopModelByPid = (pid: number) =>
+  post('/model-compare/stop-by-pid', { pid })
+
+/** 加载任务 */
+export const loadCompare = (id: string | number) => post(`/model-compare/${id}/load`)
+
+/** 卸载任务 */
+export const unloadCompare = (id: string | number) => post(`/model-compare/${id}/unload`)
+
+/** 流式对话（mock 模式下返回非流式响应，调用方需兼容） */
+export const streamChat = async (data: any): Promise<any> => {
+  // Mock 环境：返回非流式响应对象，调用方检测 content-type 决定如何处理
+  const resp = await post<{ response: string }>('/model-compare/stream-chat', data)
+  return {
+    ok: true,
+    body: {
+      getReader: () => {
+        // 模拟流式读取：把整个响应切成小块逐个返回
+        const text = resp?.response || ''
+        const encoder = new TextEncoder()
+        const chunks = [text.slice(0, text.length / 3), text.slice(text.length / 3, 2 * text.length / 3), text.slice(2 * text.length / 3)]
+        let i = 0
+        return {
+          read: async () => {
+            if (i >= chunks.length) return { done: true, value: undefined }
+            const value = encoder.encode(chunks[i++])
+            return { done: false, value }
+          },
+        }
+      },
+    },
+  }
+}
+
+/** 非流式对话（按端口代理） */
+export const chatWithPort = (data: any) => post('/model-compare/chat-with-port', data)
+
+/** 批量对话（API 类型模型） */
+export const batchChat = (data: any) => post('/model-chat/batch', data)
+
+/** 本地 transformers 模型对话 */
+export const localChat = (data: any) => post('/model-chat/local/chat', data)
+
+/** 预加载本地模型 */
+export const preloadLocalModel = (data: any) => post('/model-chat/local/preload', data)
+
+/** 预加载已训练模型 */
+export const preloadTrainedModel = (data: any) => post('/model-chat/trained/preload', data)

frontend/src/api/modules/dataset.ts

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+import { get, post, put, del } from '../request'
+import type { DatasetItem } from '@/types'
+
+/** 数据集列表 */
+export const getDatasetList = () => get<DatasetItem[]>('/dataset-manage')
+
+/** 数据集详情 */
+export const getDataset = (id: string | number) => get<DatasetItem>(`/dataset-manage/${id}`)
+
+/** 创建数据集 */
+export const createDataset = (data: Partial<DatasetItem>) =>
+  post<{ id: string | number }>('/dataset-manage', data)
+
+/** 更新数据集 */
+export const updateDataset = (id: string | number, data: Partial<DatasetItem>) =>
+  put(`/dataset-manage/${id}`, data)
+
+/** 删除数据集 */
+export const deleteDataset = (id: string | number) => del(`/dataset-manage/${id}`)
+
+/** 上传数据集文件（multipart，字段名 files） */
+export const uploadDatasetFiles = (datasetId: string | number, files: File[]) => {
+  const formData = new FormData()
+  files.forEach((f) => formData.append('files', f))
+  return post(`/dataset-manage/upload/${datasetId}`, formData, {
+    headers: { 'Content-Type': 'multipart/form-data' },
+  })
+}
+
+/** 预览数据集文件内容 */
+export const previewDatasetFile = (fileId: string | number) =>
+  get<{ content: string }>(`/dataset-manage/preview/${fileId}`)
+
+/** 下载文件 URL */
+export const downloadFileUrl = (datasetId: string | number, fileId: string | number) =>
+  `/api/dataset-manage/download/${datasetId}/${fileId}`
+
+/** 打包下载数据集 URL */
+export const downloadDatasetUrl = (datasetId: string | number) =>
+  `/api/dataset-manage/download/${datasetId}`

frontend/src/api/modules/eval.ts

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+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}`)

frontend/src/api/modules/fineTune.ts

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+import { get, post, put, del } from '../request'
+import type { FineTuneTask, TrainingProgress } from '@/types'
+
+/** 训练任务列表 */
+export const getFineTuneList = () => get<FineTuneTask[]>('/fine-tune')
+
+/** 训练任务详情 */
+export const getFineTune = (id: string | number) => get<FineTuneTask>(`/fine-tune/${id}`)
+
+/** 任务名查重 */
+export const checkFineTuneName = (name: string) =>
+  get<{ exists: boolean }>('/fine-tune/check-name', { name })
+
+/** 创建训练任务记录（第一步） */
+export const createFineTune = (data: Partial<FineTuneTask>) =>
+  post<{ id: string | number }>('/fine-tune', data)
+
+/** 启动训练（第二步） */
+export const startFineTune = (data: any) => post('/fine-tune/start', data)
+
+/** 更新训练任务 */
+export const updateFineTune = (id: string | number, data: Partial<FineTuneTask>) =>
+  put(`/fine-tune/${id}`, data)
+
+/** 停止训练任务 */
+export const stopFineTune = (id: string | number) => post(`/fine-tune/stop/${id}`)
+
+/** 删除训练任务 */
+export const deleteFineTune = (id: string | number) => del(`/fine-tune/${id}`)
+
+/** 获取训练进度 */
+export const getFineTuneProgress = (id: string | number) =>
+  get<TrainingProgress>(`/fine-tune/progress/${id}`)
+
+/** 启动 TensorBoard */
+export const startTensorboard = () => post('/fine-tune/tensorboard/start')
+
+/** 提交 Web 日志 */
+export const sendWebLog = (level: string, message: string, page: string) =>
+  post('/web-log', { level, message, page, timestamp: new Date().toISOString() })

frontend/src/api/modules/log.ts

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+import { get } from '../request'
+import type { LogFile, LogContent, TrainingLogFile } from '@/types'
+
+/** 按日期获取系统日志文件列表 */
+export const getLogFiles = (date: string) =>
+  get<LogFile[]>('/log-files', { date })
+
+/** 获取系统日志内容 */
+export const getLogContent = (file: string) =>
+  get<LogContent>('/log-content', { file })
+
+/** 训练日志文件列表 */
+export const getTrainingLogFiles = () =>
+  get<TrainingLogFile[]>('/training-log-files')
+
+/** 训练日志内容 */
+export const getTrainingLogContent = (file: string) =>
+  get<LogContent>('/training-log-content', { file })

frontend/src/api/modules/model.ts

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+import { get, post, put, del } from '../request'
+import type { ModelItem, ModelForm, TrainedModel } from '@/types'
+
+/** 模型列表 */
+export const getModelList = () => get<ModelItem[]>('/model-manage')
+
+/** 模型详情 */
+export const getModel = (id: string | number) => get<ModelItem>(`/model-manage/${id}`)
+
+/** 按名称查模型 */
+export const getModelByName = (name: string) => get<ModelItem>(`/model-manage/name/${name}`)
+
+/** 本地模型路径列表 */
+export const getLocalModels = () =>
+  get<{ models: { path: string; name: string }[] }>('/model-manage/local-models')
+
+/** 已训练模型列表 */
+export const getTrainedModels = () =>
+  get<{ models: TrainedModel[] }>('/model-manage/trained-models')
+
+/** 创建模型 */
+export const createModel = (data: ModelForm) => post('/model-manage', data)
+
+/** 编辑模型 */
+export const updateModel = (id: string | number, data: ModelForm) =>
+  put(`/model-manage/${id}`, data)
+
+/** 删除模型 */
+export const deleteModel = (id: string | number) => del(`/model-manage/${id}`)
+
+/** 删除已训练模型（合并权重） */
+export const deleteTrainedModel = (id: string | number, type: 'merged' | 'lora' = 'merged') =>
+  del(`/model-manage/trained-models/${id}`, { type })
+
+/** 更新模型用途 */
+export const updateModelPurpose = (id: string | number, purpose: string) =>
+  put(`/model-manage/${id}/purpose`, { purpose })
+
+/** 合并 LoRA 权重 */
+export const mergeModel = (data: {
+  model_name: string
+  train_method: string
+  base_model_path: string
+}) => post('/model-manage/merge', data)
+
+/** 导出已训练模型权重 */
+export const exportModelUrl = (modelName: string) =>
+  `/api/model-manage/trained-models/${encodeURIComponent(modelName)}/export`

frontend/src/api/modules/system.ts

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+import { get, post } from '../request'
+import type { SystemInfo, HealthMetrics } from '@/types'
+
+/** 系统信息（CPU/内存/磁盘/GPU/网络/系统） */
+export const getSystemInfo = () => get<SystemInfo>('/system-info')
+
+/** 健康指标（顶部栏轻量指标） */
+export const getHealth = () => get<HealthMetrics>('/health')
+
+/** 登录 */
+export const login = (username: string, password: string) =>
+  post('/login', { username, password })