- Replace combined engineStopped prop with globalPaused to decouple hard stop from soft pause
- Thread globalPaused through Board, Column, WorktreeGroup, and TaskCard components
- Active-agent glow now only suppressed on hard pause (globalPaused), not soft pause (enginePaused)
- Update tests to verify soft-pause preserves glow and hard-pause suppresses it
- Add changeset for patch release