未知（继上次中断）

backend/app/schemas/study.py

@@ -20,6 +20,7 @@ class StudyCreate(BaseModel):
 
 
 class StudyUpdate(BaseModel):
+    code: Optional[str] = None
     name: Optional[str] = None
     protocol_no: Optional[str] = None
     phase: Optional[str] = None
@@ -33,9 +34,9 @@ class StudyUpdate(BaseModel):
 
 class StudyRead(BaseModel):
     id: uuid.UUID
+    code: str
     name: str
     protocol_no: Optional[str]
-    protocol_no: Optional[str]
     phase: Optional[str]
     status: StudyStatus
     is_locked: bool