Diff Review inside cmux

Use this skill when the user wants a visual diff workflow inside cmux.

cmux does not currently ship a native cmux diff subcommand in this checkout, so the recommended workflow is:

1. Open or reuse a helper terminal surface in the caller workspace.
2. Run the right git diff / patch-view command there.
3. Prefer a rich renderer such as delta or difft when available.
4. Fall back to plain unified diff in less -R when needed.

Source Mapping

• unstaged -> git diff
• staged -> git diff --cached
• branch -> git diff <base>...HEAD
• patch file -> delta < patch.diff, difft < patch.diff, or less -R patch.diff
• stdin / generated patch -> save to a temp file, then view it as a patch file