Home/End keys don’t work in TUI2 composer (intercepted by transcript scrolling)

What version of Codex is running?

codex-cli 0.75.0

What subscription do you have?

Pro

Which model were you using?

_No response_

What platform is your computer?

Linux 6.14.0-37-generic x86_64 x86_64

What issue are you seeing?

• Pressing Home/End in TUI2 does not move the cursor in the composer.
• Instead, the keys are consumed by transcript scroll handling (jump to top/bottom).

What steps can reproduce the bug?

1. Launch: codex --enable tui2
2. Write some text
3. Press HOME/END buttons.

What is the expected behavior?

• When the transcript is at the bottom (i.e., not scrolled), Home/End should move the cursor within the composer.
• Transcript jump should only happen when transcript scrolling is active, or use a modified key chord.

Additional information

Summary

In TUI2, Home/End never reach the composer because they are intercepted at the App level for transcript scrolling. As a result, Home/End don’t move the cursor in the input
field.

Root Cause (from code review)

• codex-rs/tui2/src/bottom_pane/textarea.rs already handles Home/End correctly for cursor movement.
• codex-rs/tui2/src/app.rs unconditionally intercepts Home/End and uses them to jump the transcript (TranscriptScroll::Scrolled / ToBottom).
• These events never reach the composer.

Suggested Fix

Only intercept Home/End in App when the transcript is scrolled (i.e., TranscriptScroll != ToBottom or selection active). Otherwise pass them through to chat_widget so the
composer handles them.

Files to update

• codex-rs/tui2/src/app.rs (key handling logic)
• codex-rs/tui2/src/bottom_pane/footer.rs (key hints if shortcut changes)
• Create/update tests for composer key handling vs transcript jump

Notes

• Legacy TUI doesn’t intercept Home/End, so the issue is TUI2-specific.
• Footer already hints Home/End as "jump" only when transcript is scrolled, which aligns with the conditional-intercept approach.

Will be happy to provide PR for this!