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coder/site
Kyle Carberry be1d58bc6e fix: refocus chat input after message send completes (#22666)
## Problem

The chat input loses focus after sending a message. Users have to click
back into the input field to type their next message.

## Root Cause

When a message is sent:
1. `handleSubmit` in `AgentChatInput` calls `onSend(text)` then
immediately `focus()` — but this is premature
2. The async send sets `isLoading=true`, which disables the editor via
`EditableStatePlugin`
3. When the send resolves, `handleSendFromInput` calls `clear()` and
`focus()` — but the editor may still be disabled at this point (React
hasn't re-rendered yet)
4. When React re-renders with `isLoading=false`, the editor becomes
editable again but nobody restores focus

## Fix

Added a `useEffect` in `AgentChatInput` that watches for `isLoading`
transitioning from `true` to `false` and calls `focus()` on the editor.
This ensures focus is restored *after* React has re-enabled the editor,
not prematurely.

## Test

Added a test in `AgentDetail.test.ts` verifying that `focus()` is called
on the input ref after `handleSendFromInput` resolves.
2026-03-05 09:54:37 -05:00
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