The add-page ghost is now a thin bar along the active page's free edge
instead of a full page-sized block. Pointer taps on it go through the
stage gesture handling, so touches are evaluated by the palm rejector
with the same 'draw' policy as writing, including being cut off if the
pen shows up mid-tap. The native click only handles keyboard activation.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
