Feat: Add Keyboard Shortcuts modal to Embedded Chat options menu

[not-meet]

Feature

This feature closes that gap by adding a "Keyboard Shortcuts" option to the Embedded Chat options menu, ensuring a consistent and complete experience between the two surfaces i.e embedded chat and rocket chat.

Proposed Implementation

Add a "Keyboard Shortcuts" entry to the options menu in Embedded Chat. Clicking it opens a modal displaying the following shortcuts:

• Open Channel / User Search ⌘ / Ctrl + K or ⌘ / Ctrl + P
• Edit previous message Arrow + ↑ (when input is empty)
• Move to beginning of line ⌘ / Alt + ←
• Move to beginning of message ⌘ / Alt + ↑
• Move to end of line ⌘ / Alt + →
• Move to end of message ⌘ / Alt + ↓
• New line in message input Shift + Enter

The idea is to replicate the working of keyboard shortcuts of rocket chat in embedded chat
as how rocket chat do it

Screencast.from.2026-02-27.01-36-58.webm