TUI Ctrl+Z Undo Feature

What variant of Codex are you using?

latest one

What feature would you like to see?

Feature Request: Add Ctrl/Cmd+Z to restore draft cleared by Ctrl+C in TUI
Component: TUI chat composer (
codex-rs/tui/src/bottom_pane/chat_composer.rs
)

Root Cause: Missing Feature
The root cause is straightforward: there is no code to handle Ctrl+Z. The feature simply doesn't exist yet.

###Current Implementation

File:
codex-rs/tui/src/bottom_pane/chat_composer.rs

Function: ChatComposer::handle_key_event_without_popup (lines 2348-2429)

The function handles various key events but does NOT have any case for Ctrl+Z:

Additional information

_No response_