[FEATURE] Add keyboard shortcut (Ctrl+Enter) to send messages on Android with physical keyboard

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

When using the Claude Android app with a physical keyboard connected to a tablet, there is no way to send a message without reaching for the mouse or tapping the send button on screen. This breaks the flow significantly when typing long messages.

Proposed Solution

It would be great to have a keyboard shortcut — such as Ctrl+Enter — to send messages. This is a common pattern in other chat and productivity apps and would make the experience much smoother for users with physical keyboards on Android tablets.

Alternative Solutions

_No response_

Priority

High - Significant impact on productivity

Feature Category

CLI commands and flags

Use Case Example

Physical keyboard connected to Android tablet → type message → press Ctrl+Enter to send, without leaving the keyboard.

Additional Context

_No response_