Preferences now live in settings/web-interface.json (OPFS canonical,
localStorage mirror/migration) and render as a tabbed React window with
desktop-source annotations for unsupported items. Top-level shortcuts
move to a central registry that supports rebinding, conflict detection
and persistence; F3 and other migrated handlers honor the new keymap.
Co-Authored-By: Claude Code <noreply@anthropic.com>
