In a checkout whose private project credential had been revoked, `nap
auth login` refreshed only the account login while the dead project
override kept being selected, and attach fell through to a second,
project-scoped browser consent. Login now proves an OAuth project grant
dead (tombstoned, expired, or refresh rejected; unknown outcomes keep
it), selects the account login for this worktree, and attaches the
project named by .napseer/project.json without another consent. A
still-valid override is kept and reported. Attach takes the same fast
path, and a rejected project grant names the recovery step.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
