a11y.26, the half of it that was still open — `search-bar` gained a
computed aria-label some phases ago and this one did not.
It is why the finding survived: a placeholder *is* an accname fallback,
so the box was never unnamed and a sweep of the accessibility tree
reported the whole view clean. It is a weak name all the same, since it
disappears the moment anyone types, and it is the only thing that
distinguishes catalog search from lyric search.