WalletBackupPrefs
Wallet-level backup preferences that travel WITH the wallet (inside the seed-keyed app-state blob) instead of dying with the install (package-local prefs).
Why: on a fresh install the dust-backup toggle state was unrecoverable, so the app couldn't know a cloud checkpoint existed and silently fell back to a genesis replay. These prefs restore silently with the app-state blob (Block Store — no consent), letting the host drive the restore-over-genesis flow. See docs/projects/dust-backup-restore-continuity.md.