feat: schedule periodic reports asynchronously

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

@@ -295,7 +295,7 @@ def generate_user_report(
     if payload.reportType not in ("weekly", "monthly", "stage"):
         raise HTTPException(status_code=status.HTTP_400_BAD_REQUEST, detail="不支持的报告类型")
     try:
-        report = PeriodicReportService.generate_for_user(
+        report = PeriodicReportService.enqueue_for_user(
             db,
             user=user,
             report_type=payload.reportType,  # type: ignore[arg-type]
@@ -305,9 +305,10 @@ def generate_user_report(
         )
     except ValueError as exc:
         raise HTTPException(status_code=status.HTTP_400_BAD_REQUEST, detail=str(exc)) from exc
-    OperationLogService.write(db, admin_id=current_admin.id, module="user_report", action="generate", target_id=report.id)
+    OperationLogService.write(db, admin_id=current_admin.id, module="user_report", action="enqueue", target_id=report.id)
     db.commit()
-    return api_success(periodic_report_dict(report))
+    db.refresh(report)
+    return api_success(periodic_report_dict(report), message="报告任务已进入后台队列")
 
 
 @router.put("/user/{user_id}")

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

@@ -62,5 +62,10 @@ def periodic_reports(
     db: Session = Depends(get_db),
     current_user: User = Depends(get_current_user),
 ) -> dict:
-    reports = PeriodicReportService.list_user_reports(db, user_id=current_user.id, limit=max(1, min(limit, 50)))
+    reports = PeriodicReportService.list_user_reports(
+        db,
+        user_id=current_user.id,
+        limit=max(1, min(limit, 50)),
+        statuses=("success",),
+    )
     return api_success([periodic_report_dict(item) for item in reports])