feat: add question insight analytics

ai_knowledge_base_v2/apps/backend/app/api/admin_records.py

@@ -19,6 +19,7 @@ from app.models.chat import ChatMessage, ChatSession
 from app.models.logs import AiRequestLog, OperationLog
 from app.models.user import User
 from app.api.pagination import page_result
+from app.services.question_insight_service import QuestionInsightService
 
 router = APIRouter()
 
@@ -222,6 +223,30 @@ def ai_log_detail(
     return api_success(_ai_log_dict(log, include_prompt=True))
 
 
+@router.get("/question-insights/summary")
+def question_insights(
+    dateFrom: datetime | None = Query(default=None),
+    dateTo: datetime | None = Query(default=None),
+    minCount: int = Query(default=2, ge=1, le=50),
+    maxMessages: int = Query(default=5000, ge=100, le=20000),
+    page: int = Query(default=1, ge=1),
+    pageSize: int = Query(default=20, ge=10, le=50),
+    db: Session = Depends(get_db),
+    current_admin: Admin = Depends(get_current_admin),
+) -> dict:
+    return api_success(
+        QuestionInsightService.summarize(
+            db,
+            date_from=dateFrom,
+            date_to=dateTo,
+            min_count=minCount,
+            max_messages=maxMessages,
+            page=page,
+            page_size=pageSize,
+        )
+    )
+
+
 def _chat_query(
     *,
     keyword: str,