[FEATURE] Support shift+enter in most terminals

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

You can capture shift+enter using the kitty protocol, which is supported by kitty, ghostty, alacritty, wezterm, iterm2, and some more terminals I haven't heard of.

This will also be better for iterm2 users, as it won't break their shift+enter for other TUIs.

PS: Testing script remove duplication issue.

Proposed Solution

This will also be better for iterm2 users, as it won't break their shift+enter for other TUIs.

Alternative Solutions

_No response_

Priority

Medium - Would be very helpful

Feature Category

CLI commands and flags

Use Case Example

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Additional Context

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