启动与授权-初步优化

backend/app/schemas/attachment.py

@@ -10,6 +10,7 @@ class AttachmentRead(BaseModel):
     id: uuid.UUID
     filename: str
     file_size: int = Field(alias="size")
+    content_type: str | None = None
     uploaded_by: UserDisplay | None = None
     uploaded_by_id: uuid.UUID | None = None
     uploaded_at: datetime

backend/app/schemas/startup.py

@@ -71,6 +71,7 @@ class StartupEthicsRead(BaseModel):
 
 
 class KickoffMeetingCreate(BaseModel):
+    site_id: uuid.UUID
     kickoff_date: Optional[date] = None
     attendees: Optional[list[str]] = None
 
@@ -83,6 +84,7 @@ class KickoffMeetingUpdate(BaseModel):
 class KickoffMeetingRead(BaseModel):
     id: uuid.UUID
     study_id: uuid.UUID
+    site_id: Optional[uuid.UUID]
     kickoff_date: Optional[date]
     attendees: Optional[list[str]]
     created_by: Optional[uuid.UUID]