fix(tui): reduce chat input flicker#10
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Implemented the input rewrite. The flicker source was the remount pattern in the old autocomplete path; that’s now reduced to a submit-only reset instead of remounting during typing/completion. The main change is `src/components/ChatInput.tsx`, which replaces the old `Autocomplete` component. It uses `TextInput`’s built-in `suggestions` for slash commands, removes the custom arrow/tab menu logic, and only remounts the input after a successful submit to clear the field. `src/components/Chat.tsx` no longer keys the input on every submit cycle, and `src/components/index.ts` now exports `ChatInput`.
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What is the motivation for this pull request?
This is a bug fix for intermittent screen flicker in the Ink chat input while typing and especially when holding keys like backspace.
What is the current behavior?
The chat input could visibly flicker because it remounted or rerendered excessively during typing, autocomplete, and submit/reset flows.
What is the new behavior?
The chat input now stays stable while typing. The remount-heavy autocomplete path was replaced with a simpler flow that only resets after submit, reducing redraw churn and removing the flicker source.
Checklist: