widen track title container, replace inline description with disclosure icon (#1205)
- increase .track-info-wrapper max-width from 600px to min(900px, 90%)
so long titles stay on one line on desktop
- replace collapsible description block with a circled (i) toggle in the
stats row that slides open a metadata panel on click
- only renders when track.description exists
Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
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