feat: cms overview and mobile case query

apps/user/cms.py

@@ -324,6 +324,11 @@ class CmsStudentViewSet(viewsets.ReadOnlyModelViewSet):
 
     数据范围 = `teacher_student_relation` 中 `teacher=当前医生 且 status=1` 的学生。
     非名下学生访问详情时不在 queryset 内 → 404。
+
+    附带教能力相关接口（均自动收口名下学生）：
+    - CMS-TEA-3 教学工具-训练记录：`GET students/training-records/`
+    - CMS-TEA-4 能力画像：`GET students/{id}/competency/`
+    - CMS-TEA-5 排行榜：`GET students/ranking/`
     """
     permission_classes = [IsAuthenticated, IsTeacher]
     serializer_class = CmsStudentSerializer
@@ -340,3 +345,26 @@ class CmsStudentViewSet(viewsets.ReadOnlyModelViewSet):
             .select_related('institution', 'department')
             .order_by('-created_at')
         )
+
+    @extend_schema(summary='CMS-TEA-3 教学工具-训练记录（名下学生）', tags=['CMS-我的学生'])
+    @action(detail=False, methods=['get'], url_path='training-records')
+    def training_records(self, request):
+        """名下学生训练记录列表（与超管 CMS-TRN-1 共用构建逻辑，范围限名下学生）。"""
+        from apps.cms.training import build_training_records
+        from apps.training.models import TrainingRecord
+        student_ids = list(self.get_queryset().values_list('id', flat=True))
+        base = TrainingRecord.objects.filter(user_id__in=student_ids)
+        return build_training_records(base, request)
+
+    @extend_schema(summary='CMS-TEA-5 学生排行榜（名下学生多维度排名）', tags=['CMS-我的学生'])
+    @action(detail=False, methods=['get'], url_path='ranking')
+    def ranking(self, request):
+        from apps.cms.training import build_ranking
+        return Response(build_ranking(self.get_queryset(), request.query_params.get('dimension')))
+
+    @extend_schema(summary='CMS-TEA-4 学生能力画像（雷达 + 概览）', tags=['CMS-我的学生'])
+    @action(detail=True, methods=['get'], url_path='competency')
+    def competency(self, request, pk=None):
+        """单个名下学生的能力画像（越权对象不在 queryset → 404）。"""
+        from apps.cms.training import student_competency
+        return Response(student_competency(self.get_object()))