Main Changes:
- [Enhancement]: Improved message deletion capabilities, especially for messages displayed side-by-side.
- [UI]: Added clear visual cues (like a disabled delete icon and tooltips) to explain why some messages cannot be deleted in certain scenarios (e.g., when they are linked).
- [UI]: Enhanced the visual redraw mechanism to ensure that connections between chat messages remain accurate and visually correct after deletions.
- [Maintenance]: Performed minor code cleanups to remove outdated comments and unnecessary code, improving overall system efficiency.
