feat: 新增 .txt 纯文本文件支持

- 添加 txt 到允许上传格式，跳过 MinerU OCR - 直接读取 UTF-8 文本，按 3000 字符/页分页后送入 LangExtract - 适合有中文文本的规范文件，避免扫描件 OCR 乱码问题
2026-06-18 17:00:40 +08:00
parent a46ceb94de
commit 71676dba9e
3 changed files with 84 additions and 49 deletions
@@ -110,6 +110,7 @@ async def list_formats():
            {"ext": "jpg",  "description": "JPEG 图片（单页）", "max_size_mb": 200, "max_pages": 1, "requires_ocr": True},
            {"ext": "jpeg", "description": "JPEG 图片（单页）", "max_size_mb": 200, "max_pages": 1, "requires_ocr": True},
            {"ext": "html", "description": "HTML 文件", "max_size_mb": 200, "max_pages": 600, "requires_ocr": False},
+            {"ext": "txt",  "description": "纯文本文件（UTF-8 编码）", "max_size_mb": 200, "max_pages": 0, "requires_ocr": False},
        ],
        "ocr_languages": [
            {"code": "ch", "name": "中文（默认）"},