TUI Vim mode: ^ does not move to the first non-blank character

What variant of Codex are you using?

Codex CLI TUI (codex-cli 0.144.0).

What feature would you like to see?

Support the standard Vim ^ motion in composer Normal mode.

In Vim, 0 moves to column zero and ^ moves to the first non-blank character. Codex supports 0, but pressing ^ has no effect.

Reproduction

1. Enable Vim mode.
2. Enter an indented line:

``text
alpha
``

1. Press Esc, then $, then ^.

Expected: the cursor moves to a.

Actual: the cursor remains at the end of the line.