Read the wireframe as a tree this time instead of a flat list of its text, and
the difference was structural rather than cosmetic.
The drawing nests it: a toolbar row, then a body row holding the transcript and
the files column side by side, then the composer as its OWN full-width row under
both, then the status line. The app had the composer inside the chat column, so
it stopped at the files panel's edge — the input narrowed by ~220px the moment a
deliverable appeared. It is now a sibling of the splitter, spanning 1474 of 1490
px with the panel open.
The panel also carried two headings: a "Files" label, and under it the section's
own "TỆP ĐẦU RA (n)". The drawing has one — "TỆP ĐẦU RA (3) ›" — so the section
header moves onto that row with the collapse chevron at its right, and the label
steps out of the layout.
The check for that needed two attempts. Asking whether the "Files" label is
visible passes either way: unparented, it reports invisible whether or not the
code hides it. It now counts the headings the panel actually shows.
23/23 checkers pass.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
