[FEATURE] 改行キーの変更

Preflight Checklist

• [x] I have searched existing requests and this feature hasn't been requested yet
• [x] This is a single feature request (not multiple features)

Problem Statement

enter キーで改行、shift+enterでメッセージ送信にできるようにしてほしい

Proposed Solution

enter キーで改行、shift+enterでメッセージ送信と設定で変更できるようにしてほしい

Alternative Solutions

_No response_

Priority

High - Significant impact on productivity

Feature Category

Configuration and settings

Use Case Example

_No response_

Additional Context

_No response_