- Deleted obsolete chapter slots: chapter_description, chapter_end_seconds, chapter_end_time, chapter_id, chapter_index, chapter_source, chapter_start_seconds, chapter_start_time, humidity_tolerance, parent_chapter_id.
- Archived previous versions of deleted slots for reference.
- Introduced new generic slots: end_seconds, end_time, has_or_had_parent, has_or_had_sequence_index to streamline schema and improve consistency.
- Updated descriptions and mappings for new slots to ensure clarity and maintain functionality.
