feat: update medical training case and auth modules

test/test_case_negative.py

@@ -53,6 +53,19 @@ class CaseFieldValidationTest(CacheTestCase):
         self.assertEqual(resp.status_code, 400, resp.content)
         self.assertEqual(resp.json()['code'], 'CASE_SUBTYPE_CONFLICT')
 
+    def test_duplicate_exam_items_deduped_on_create(self):
+        """同一病例重复 item_code：归一化后只保留一条并成功创建。"""
+        payload = build_traditional_payload(with_exam_items=True)
+        self.assertIn('exam_items', payload)
+        payload['exam_items'].append({
+            **payload['exam_items'][0],
+            'item_name': '重复血常规',
+            'result_text': '应被忽略',
+        })
+        resp = self.client.post(CASE_FULL_CREATE_URL, payload, format='json')
+        self.assertEqual(resp.status_code, 201, resp.content)
+        self.assertEqual(len(resp.json()['exam_items']), 1)
+
     def test_missing_subtable_400(self):
         """N13: case_type=traditional 但无 traditional 子表 → 400 CASE_SUBTYPE_REQUIRED"""
         payload = build_traditional_payload()