- Introduced a new _TolerantEpubReader class to handle missing files in the EPUB manifest gracefully.
- Added read_epub_safe function to replace direct calls to epublib.read_epub, enhancing error handling.
- Updated build_merged_html_from_epub and build_chapters_from_epub functions to utilize the new reading method.
- Added Google token verification logic to improve security and ensure valid tokens are processed.
- Introduced functions for extracting chapters from EPUB files based on HTML tags, including support for chapter markers.
- Updated `.env.example` to include configuration for an OpenAI-compatible router.
- Refactored existing functions for better readability and maintainability.
virtus