- Added functionality to unescape HTML entities in the title of feed messages to ensure proper display.
- Introduced a new test to verify that titles with HTML entities are correctly formatted after processing.
- Replaced inline timestamp formatting logic with a call to `format_relative_timestamp` for improved readability and maintainability.
- Modularized feed formatting functions by moving them to `feed_format`, enhancing code organization and reusability.
- Updated references in `feed_manager` and `web_viewer` to utilize the new modular functions, ensuring consistent behavior across modules.
- Adjusted tests to reflect changes in function imports and ensure proper functionality of the new structure.