Per-user opt-in 2FA: enroll from the Two-factor option next to Change password (QR + confirm code + 8 one-time recovery codes), login becomes two-step for enrolled users, disable requires the account password. Escape hatch for lost phones: reset-2fa CLI + Reset Two-Factor StartOS action. Second-factor guesses share the login rate limiter; the pending login window expires after 5 minutes. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Generic single-database configuration.