feat: 管事自助更换组长（配额、记录、小程序与后台接口）

users/views/__init__.py

@@ -74,6 +74,11 @@ from .role_agreement_mp import (
     RoleAgreementSignView,
 )
 
+from .change_leader_mp import (
+    GuanshiChangeZuzhangInfoView,
+    GuanshiChangeZuzhangView,
+)
+
 from .admin import (
     AdGetOrderList,
     AdGetOrderTypes,

users/views/change_leader_mp.py

@@ -0,0 +1,61 @@
+"""小程序：管事更换组长。"""
+from rest_framework.permissions import IsAuthenticated
+from rest_framework.response import Response
+from rest_framework.views import APIView
+
+from users.services.change_leader import build_change_leader_info, change_leader_by_invite
+
+
+class GuanshiChangeZuzhangInfoView(APIView):
+    """
+    POST /yonghu/gs_huan_zuzhang_info
+    当前组长 + 剩余更换次数
+    """
+    permission_classes = [IsAuthenticated]
+
+    def post(self, request):
+        result = build_change_leader_info(request, request.user)
+        if not result.get('ok'):
+            return Response({
+                'code': result.get('code', 403),
+                'msg': result.get('msg', '失败'),
+                'data': None,
+            })
+        return Response({
+            'code': 200,
+            'msg': result.get('msg', 'ok'),
+            'data': result.get('data'),
+        })
+
+
+class GuanshiChangeZuzhangView(APIView):
+    """
+    POST /yonghu/gs_huan_zuzhang
+    body: { inviteCode: 组长邀请码 }
+    """
+    permission_classes = [IsAuthenticated]
+
+    def post(self, request):
+        invite = (
+            request.data.get('inviteCode')
+            or request.data.get('yaoqingma')
+            or ''
+        )
+        result = change_leader_by_invite(
+            request,
+            request.user,
+            invite,
+            source='miniapp',
+            operator=getattr(request.user, 'UserUID', '') or '',
+        )
+        if not result.get('ok'):
+            return Response({
+                'code': result.get('code', 400),
+                'msg': result.get('msg', '更换失败'),
+                'data': None,
+            })
+        return Response({
+            'code': 200,
+            'msg': result.get('msg', '更换组长成功'),
+            'data': result.get('data'),
+        })