[LocalMode] Role-aware chat message (data-role) rendering string or ContentPart[] — markdown text, image thumbnails with a fullscreen dialog, and file download chips from local bytes — with contained/flat variants and an inter-message Checkpoint savepoint marker. Matches @localmode/react's message model.
pnpm dlx shadcn@latest add "https://registry.directory/r/localmode-ai/ui/conversation/message.json"