feat: add periodic practice reports

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

@@ -10,6 +10,7 @@ from app.models.user import User
 from app.schemas.user import UserProfile
 from app.services.entitlement_service import EntitlementService, entitlement_dict
 from app.services.growth_profile_service import GrowthProfileService, growth_profile_dict
+from app.services.periodic_report_service import PeriodicReportService, periodic_report_dict
 from app.services.topic_session_service import TopicSessionService
 
 router = APIRouter()
@@ -53,3 +54,13 @@ def growth_profile(
             ],
         }
     )
+
+
+@router.get("/periodic-report/list")
+def periodic_reports(
+    limit: int = 20,
+    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)))
+    return api_success([periodic_report_dict(item) for item in reports])