feat: add question insight analytics

ai_knowledge_base_v2/apps/admin-web/src/services/api.ts

@@ -28,6 +28,7 @@ import type {
   PageResult,
   PromptDetail,
   PromptHistoryItem,
+  QuestionInsightSummary,
 } from "../types/api";
 
 const API_BASE = import.meta.env.VITE_API_BASE_URL ?? "/api";
@@ -211,6 +212,8 @@ export const api = {
     request<PageResult<AiLogRecord>>(`/admin/ai-log/list${queryString(query)}`),
   aiLogDetail: (id: number) => request<AiLogRecord>(`/admin/ai-log/${id}`),
   operationLogs: (query: { module?: string; page?: number; pageSize?: number } = {}) => request<PageResult<Record<string, unknown>>>(`/admin/log/list${queryString(query)}`),
+  questionInsights: (query: { dateFrom?: string; dateTo?: string; minCount?: number; maxMessages?: number; page?: number; pageSize?: number } = {}) =>
+    request<QuestionInsightSummary>(`/admin/question-insights/summary${queryString(query)}`),
   retrievalLogs: (query: { page?: number; pageSize?: number } = {}) => request<PageResult<RetrievalLogItem>>(`/admin/retrieval-log/list${queryString(query)}`),
   estimateRetrievalCleanup: (before: string) => request<{ before: string; estimatedCount: number }>("/admin/retrieval-log/cleanup/estimate", { method: "POST", body: JSON.stringify({ before }) }),
   cleanupRetrievalLogs: (before: string) => request<{ before: string; deleted: number }>("/admin/retrieval-log/cleanup", { method: "POST", body: JSON.stringify({ before }) }),