Refresh website content from Arto v0.15.1 to v0.24.1.
Commit: b6580b93da86db17ce028daf50491ef7e060f9a6
- Updated features page to include custom keybindings and preset support (Default/Vim/Emacs).
- Documented enhanced CLI behavior (`--open`, `--directory`) and single-instance routing.
- Added Smart Context Menu and copy workflows (Copy As..., image/math/mermaid copy & save).
- Added Math/Image dedicated viewer window capabilities alongside Mermaid.
- Added version tracking page and structured sync log for future migrations.