Animate chat text with pretext reveal

[ryokun6]

Summary

• add @chenglou/pretext-driven line layout and reveal timing for assistant chat text so the text animation no longer depends on per-token framer-motion spans
• keep the markdown tokenization cache/coalescing so assistant text can still render rich inline formatting efficiently while revealing via pretext-derived character/line progress
• retain the rest of the chat UI structure and fallback rendering, while replacing the assistant text hot path with a plain React reveal based on precomputed layout information

Testing

• bun test tests/test-chat-markdown.test.ts tests/test-chat-text-layout.test.ts
• bun run build
• browser validation of the Chats UI on a fresh client confirmed the app loads and the Chats app opens; manual generation of new assistant replies was blocked by the local anonymous rate limit on the existing API server, so runtime validation focused on build/test correctness and UI load behavior

  

[ryos-deploy]

The preview deployment for ryos-dev is ready. 🟢

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Last updated at: 2026-03-31 04:17:47 CET