The app-level on_resize/on_screen_resume didn't fire on initial
screen push. Now DocsPanel handles its own responsive layout
via on_mount and on_resize, ensuring it works immediately.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Split each screen into two columns: existing controls on the left,
a DocsPanel with Rich-markup documentation on the right (30% width).
Press F1 to toggle the help panel on/off from any screen.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>