feat(blocks): localize reusable application shell blocks
- move block messages beside appearance, chats, layout, navigation, and notification features\n- publish independently tree-shakeable catalogs for eight locales per block\n- localize controllers and leaf labels without rerendering surrounding interactive components\n- support descriptor-backed navigation labels, translated breadcrumbs, and compact-label truncation\n- add catalog composition helpers and coverage for reusable block consumers
Maofeng
6af4d7b798