## Changes
### 1. Fixed streaming lag with throttle parameter
**Problem:** The AI chat was experiencing lag during message streaming
because the messages array was being updated too frequently, causing all
messages to re-render too quickly.
**Solution:** Added the `experimental_throttle: 100` parameter to the
`useChat` hook configuration. This throttles message updates during
streaming to prevent excessive re-renders and improve performance.
### 2. Cleaned up useAgentChat hook return values
**Context:** The `useAgentChat` hook primarily returns values from the
underlying `useChat` hook, so there wasn't significant room for
improvement regarding the "umbrella hook" pattern. However, some
unnecessary values were being returned that weren't needed.
**Solution:**
- Removed `input` and `handleInputChange` from the `useAgentChat` hook
return. These weren't needed since input state is already managed
directly via Recoil state (`agentChatInputState`) in components.
<!-- CURSOR_SUMMARY -->
---
> [!NOTE]
> Throttle message streaming updates and switch AI chat input management
from context to Recoil; minor scroll behavior tweak.
>
> - **AI Chat performance**:
> - Add `experimental_throttle: 100` to `useChat` in `useAgentChat` to
reduce re-render frequency during streaming.
> - **State management**:
> - Migrate input handling to Recoil via `agentChatInputState`; remove
`input` and `handleInputChange` from `AgentChatContext` and
`useAgentChat` returns.
> - Update `AIChatTab` and `SendMessageButton` to read/write input from
Recoil and adjust hotkeys/disabled state accordingly.
> - **UX behavior**:
> - Remove smooth scroll behavior in `useAgentChatScrollToBottom`.
>
> <sup>Written by [Cursor
Bugbot](https://cursor.com/dashboard?tab=bugbot) for commit
911b341ea1f7c63a4e1e27667da119d9a2960b78. This will update automatically
on new commits. Configure
[here](https://cursor.com/dashboard?tab=bugbot).</sup>
<!-- /CURSOR_SUMMARY -->
---------
Co-authored-by: Félix Malfait <felix.malfait@gmail.com>
Abdul Rahman
19fc20173b