I think it would need an integrated private relay to work without internet access
Vault v1.0.2
Changes:
- new UI
- internationalization
- tooltips
- improve UX
Links:
- Chrome web store: pending approval
- GitHub release: https://github.com/jinglescode/nostr-password-manager/releases/tag/v1.0.2
Thanks nostr:npub149p5act9a5qm9p47elp8w8h3wpwn2d7s2xecw2ygnrxqp4wgsklq9g722q for the logo design and colour scheme

Discussion
Yes. Settings can choose relay.