Make the TUI behave more like a modern terminal

What feature would you like to see?

Codex CLI is already a great tool, but it could be even better if the TUI behaved more like a modern terminal. Specifically:

• it should possible to cut/copy/paste text in it. Pasting and copying are fine (including mouse support, yay!) but cutting is not supported, neither by mouse or keyboard shortcuts. This would make it much easier to write long prompts.
• it should be possible to discard a long prompt without deleting a word at at time with Ctrl+w

Additional information

_No response_