Safer onboarding and login delivery
Onboarding submissions and sign-in links now remain reliable during retries, concurrent requests, and rolling deployments.
Onboarding and passwordless sign-in now recover more safely from delayed work and repeated requests.
- Preserve the newest valid sign-in link when delivery is retried or replaced.
- Keep queued delivery compatible with rolling deployments and multiple application instances.
- Limit abusive sign-in-link requests without revealing whether an account exists.
- Enforce onboarding consent and protect active work when an account is being deleted.
- Improve operational traces, scheduler responsiveness, and failure recovery.