---
name: "Fix chat textarea input lag"
---

# Story 178: Fix chat textarea input lag

## User Story

As a user, I want typing in the chat input to feel responsive, so that I can compose messages without frustrating delays.

## Acceptance Criteria

- [ ] Extract ChatInput as a separate component that owns its own input state, only calling parent on submit
- [ ] Wrap calculateContextUsage in useMemo so it doesn't recompute on every keystroke
- [ ] Extract MessageItem as a React.memo component so individual messages skip re-render on unrelated state changes
- [ ] Typing in the textarea does not trigger re-render of the message list

## Out of Scope

- TBD
