feat(performance): 合并报告前端 API 封装

- getProjectReport / getBatchReport / getProjectReports 三个 API 函数
- 对应后端 /projects/{id}/report /batch-reports/{id} /projects/{id}/reports 路由
Co-Authored-By: Claude <noreply@anthropic.com>

frontend/src/api/performance.ts

@@ -23,6 +23,8 @@ import type {
   PerformanceProjectStats,
   BatchRunRequest,
   BatchRunResponse,
+  ProjectReportResponse,
+  ProjectReportListResponse,
 } from '@/types/performance'
 
 const BASE = '/api/performance'
@@ -216,3 +218,23 @@ export function batchRunTasks(data: BatchRunRequest): Promise<BatchRunResponse>
 export function runProjectAll(projectId: string): Promise<BatchRunResponse> {
   return request.post(`${BASE}/projects/${projectId}/run-all`)
 }
+
+// ==================== 合并报告 ====================
+
+/** 获取项目最新合并报告 */
+export function getProjectReport(projectId: string): Promise<ProjectReportResponse> {
+  return request.get(`${BASE}/projects/${projectId}/report`)
+}
+
+/** 按批次ID获取合并报告 */
+export function getBatchReport(batchId: string): Promise<ProjectReportResponse> {
+  return request.get(`${BASE}/batch-reports/${batchId}`)
+}
+
+/** 获取项目历史合并报告列表 */
+export function getProjectReports(projectId: string, params?: {
+  page?: number
+  pageSize?: number
+}): Promise<ProjectReportListResponse> {
+  return request.get(`${BASE}/projects/${projectId}/reports`, { params })
+}
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