Shared todo list — either person can add, check off, or remove items on it.
When one person adds an item, the other gets notified.
When one person checks/marks an item, the other gets notified too.
Take a picture of a handwritten list and have it populate a new digital list (AI/OCR) — open q: how to actually do this.
Basic auth, backed by Supabase.
One user is the list owner and invites the other — family-style invite, not open signup.
Users can choose whether to subscribe to a given list or not — not everything is shared with everyone.
open q: should editing (not just adding/checking) also be live-synced?
open q: how do push notifications actually get wired up end to end?
