Every settings-style page carried the same 40-line SliverAppBar block;
titles, custom leadings (discard-confirm back handlers), and action
buttons are preserved through the widget's slots.
Replace the custom _ActionCard/SwitchListTile layout with the shared SettingsSectionHeader + SettingsGroup + SettingsItem/SettingsSwitchItem components used across the other settings pages, so spacing, grouping and switch styling match. Busy state shows an inline progress indicator on the action row.
Back up the store registry URL plus each installed extension (id, version, enabled flag and settings) and restore them on a new device by reinstalling from the store and re-applying settings. Secret-flagged settings (tokens/API keys) are excluded by default behind an opt-in 'Include extension credentials' toggle. Device-bound signed sessions are never backed up. Settings are merged on restore so omitted secrets are not wiped; failed reinstalls are reported.
Add a Backup & Restore page that exports app settings, download history, liked tracks, wishlist, playlists (with cover images) and favorite artists into a single JSON file, and restores them on another device. Settings restore preserves device-specific storage location (SAF tree URI, download dir). Includes EN strings and ID translations.
zarzet