feat: update medical training case and auth modules

apps/case/services/case_importer.py

@@ -10,6 +10,7 @@ from pathlib import Path
 from config.exceptions import AppError
 from . import deepseek_client
 from .pdf_reader import extract_text_from_pdfs
+from .exam_items import normalize_exam_items
 from prompts.loader import load_prompt
 
 logger = logging.getLogger(__name__)
@@ -38,6 +39,10 @@ def parse_pdf(files, case_type: str, user) -> dict:
     data.pop('stages', None)
 
     data['case_type'] = case_type
+    if 'exam_items' in data:
+        data['exam_items'] = normalize_exam_items(data.get('exam_items') or [])
+    else:
+        data['exam_items'] = []
 
     _strip_unknown_fields(data)
     _validate_schema(data)
@@ -72,7 +77,7 @@ _SCHEMA_ALLOWED_KEYS = {
     'patient_age', 'patient_gender', 'tags', 'symptom_tags', 'disease_tags',
     'competency_tags', 'guideline_tags', 'knowledge_points', 'icd_codes',
     'estimated_minutes', 'osce_enabled', 'department_name',
-    'traditional', 'teaching',
+    'exam_items', 'traditional', 'teaching',
 }