<leader>gd/gm cover uncommitted work and a whole branch, but neither
answers "what did that one commit on main do". <leader>gr opens the
explorer on one commit's files, defaulting to a sha under the cursor so
it works straight from a log or a commit message. <leader>gR lists the
commits HEAD has that a base branch does not, oldest first.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>