The AcoustID Identify button (#759) merged in referencing an out-of-scope
`panel` in the wiring — a leftover from the pre-popup fix-match modal that my
tab refactor renamed to `root`. Under strict mode that threw, so the handler
never attached and the button did nothing. Scope it to `root` (the tab body),
which is where the search-results area it renders into lives.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
