undo
Wraps bin/undo.sh. History-mutating operation — treat as destructive.
1. Always preview first
Before any mutation, run bin/undo.sh --dry-run and show the user
which commits will be undone. The preview JSON lists them newest-
first with SHA and subject. Read it back and ask the user to
confirm — even for a single-commit undo.
Exception: the user's request explicitly included "don't ask" / "just
do it" AND --count is 1 AND --strategy is soft (the safest
default). For anythi
[Description truncada. Veja o README completo no GitHub.]