Peel relationships, eligibility, and secrets off the shared pool into
AppDataStores adapters, split pairing service/protocol, and move the
invitation Repository into its own module so open_all owns schemas.
Co-authored-by: Cursor <cursoragent@cursor.com>
Introduce persistence::open_all so domain stores (invitation, targeted,
blocked) are constructed once. Extract TargetedTransferStore and own it on
CoreInner; soft-close raw pool access for new callers.
Co-authored-by: Cursor <cursoragent@cursor.com>