4.2.12

• After a supersession, a roadmap breach can be kept or restored (issue #62). The breach captured the roadmap before the successor's start rewrote its Current: line, so keep refused even with the developer's ok, restore refused too, and wake named scope docs/spec/roadmap.md indefinitely. Keep and restore now read a Current: line naming the open commitment as the start's own write. Any other difference still refuses: other bytes, a mode change, or Current: naming another commitment.
• The hook tests turn off git's auto maintenance in the throwaway repositories they build. Its lock file appeared and vanished after a commit and could fall between two fingerprints, failing a test that no hook had changed.