解析 API Key，支持环境变量提取
(raw_key: str)
| 37 | logger = logging.getLogger(__name__) |
| 38 | |
| 39 | def create_concat_image_b64(doc: fitz.Document, start_p: int, end_p: int, save_path: str = None) -> str: |
| 40 | """将指定范围的 PDF 页面转换为横向拼接的 JPG，并在底部追加页码。""" |
| 41 | images = [] |
| 42 | page_nums = [] |
| 43 | |
| 44 | # 定义目标长边像素，确保小页面也能被放大到清晰程度 |
| 45 | TARGET_LONG_EDGE = 1500 |
| 46 | |
| 47 | for p in range(start_p - 1, end_p): |