- Added `has_or_had_direction` slot to represent directional orientations of entities, migrating from `text_direction`.
- Introduced `has_or_had_mode` slot for linking entities to operational modes, migrating from `thinking_mode`.
- Created `Content` class to encapsulate intellectual content of heritage materials, migrating from `temporal_coverage`.
- Added `TextDirection` class to define text flow orientations, migrating from `text_direction` slot.
- Introduced `ThinkingMode` class for LLM thinking mode configurations, migrating from `thinking_mode` slot.
- Archived previous slots related to text direction, languages detected, and thinking modes for historical reference.
- Updated documentation and annotations for clarity and compliance with RiC-O naming conventions.
