Add SplitLink/VSplitLink/TabnewLink/TabDropLink/GoBackLink to both
keymap harness command lists, plus a smoke check that
nuwiki.commands.follow_link_drop is callable.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Update the README command tables for the full :Nuwiki*/:Vimwiki* surface
and add command-registration assertions (removeCheckbox, catUrl, and the
other parity entry points) to both the Vim and Neovim keymap harnesses.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
gffranco