上传前人工裁剪错题区域，OCR 原文排除手写作答。

Co-authored-by: Cursor <cursoragent@cursor.com>

backend/app/schemas/__init__.py

@@ -239,6 +239,7 @@ class WrongQuestionOut(BaseModel):
     solution_text: str | None
     mark_regions: list[dict] | None = None
     has_annotated_image: bool = False
+    has_cropped_image: bool = False
     error_message: str | None = None
     status: WrongQuestionStatusEnum
     created_at: datetime