feat(performance): 前端合并报告类型定义

- BatchRunResponse 增加 reportId?: string | null
- 新增 TaskSummaryItem / ProjectReportSummary / ProjectReportResponse /
  ProjectReportListResponse 接口对齐后端 schema
Co-Authored-By: Claude <noreply@anthropic.com>

frontend/src/types/performance.ts

@@ -457,6 +457,7 @@ export interface BatchRunResponse {
   message: string
   batchId: string
   taskCount: number
+  reportId?: string | null
 }
 
 /** WebSocket 批量执行进度消息 */
@@ -471,4 +472,61 @@ export interface PerfBatchProgress {
   currentStatus: 'running' | 'completed' | 'failed'
   successCount: number
   failCount: number
+}
+
+// ==================== 合并报告 ====================
+
+/** 合并报告任务明细项 */
+export interface TaskSummaryItem {
+  taskId: string
+  taskName: string
+  status: string
+  totalRequests: number
+  successCount: number
+  failCount: number
+  avgResponseTime: number
+  actualTps: number
+  errorRate: number
+}
+
+/** 合并报告聚合指标摘要 */
+export interface ProjectReportSummary {
+  totalRequests: number
+  successCount: number
+  failCount: number
+  errorRate: number
+  actualTps: number
+  peakTps: number
+  avgResponseTime: number
+  minResponseTime: number
+  maxResponseTime: number
+  p50ResponseTime: number
+  p90ResponseTime: number
+  p95ResponseTime: number
+  p99ResponseTime: number
+  stdDev: number
+  apdex: number
+  status2xx: number
+  status3xx: number
+  status4xx: number
+  status5xx: number
+  totalSentBytes: number
+  totalReceivedBytes: number
+  durationActual: number
+}
+
+/** 合并报告响应 */
+export interface ProjectReportResponse {
+  id: string
+  projectId: string
+  batchId: string | null
+  createdAt: string | null
+  summary: ProjectReportSummary
+  taskSummaries: TaskSummaryItem[]
+}
+
+/** 合并报告列表响应 */
+export interface ProjectReportListResponse {
+  total: number
+  items: ProjectReportResponse[]
 }
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