feat: 完善模板对比持久化与附件版本处理

fastapi_modules/fastapi_leaudit/controllers/documentController.py

@@ -221,6 +221,8 @@ class DocumentController(BaseController):
         async def AppendAttachments(
             DocumentId: int,
             files: list[UploadFile] = File(..., description="附件文件列表"),
+            mergeMode: str = Form("new", description="附件合并模式：overwrite/new"),
+            remark: str | None = Form(None, description="本次追加附件备注"),
             payload: dict[str, Any] = Depends(verify_access_token),
         ):
             """为现有文档追加附件（带数据隔离校验）。"""
@@ -232,6 +234,8 @@ class DocumentController(BaseController):
                 CurrentUserId=int(payload["user_id"]),
                 Id=DocumentId,
                 Files=filePayloads,
+                MergeMode=mergeMode,
+                Remark=remark,
             )
             return Result.success(data=Data, message="附件上传成功")