- Introduced `auto_prefix_chapter_titles` setting in Job and PendingJob classes to control prefixing of chapter titles with "Chapter".
- Updated job detail and settings templates to display and configure the new option.
- Enhanced reader.js to manage playback controls, including chapter navigation and playback speed adjustments.
- Implemented a new prepare_chapters.html template for chapter selection and configuration during job preparation.
- Added tests for chapter title formatting and heading equivalence to ensure correct behavior of the new feature.