Tourmaline wrapped insights

Five new profile sections, all with scroll-reveal animations.

Minutes Listened: Hero stat with animated counter (ease-out cubic, 1.6s duration). Shows hours listened and equivalent days of music. Uses IntersectionObserver at 20% threshold to trigger.

Music Evolution: Stacked horizontal bars per month showing genre distribution shifts. Each month row fades in from the left with 40ms stagger. Colour-coded legend for up to 6 genres. Requires at least 3 months of genre data to display.

Remarkable Days: Cards for peak listening day, discovery day (most first-time artists on one day), peak month, and quietest active day. Staggered 70ms per card. Uses lucide-svelte icons (Zap, Compass, BarChart2, Ghost).

Discovery: Artists ordered by first-listen date (most recent first). Shows up to 50 with noise-avatars for missing images. Staggered 35ms per row.

Yearly Wrapped: Shareable summary card with hours, unique artists, scrobbles, diversity score, top artist/track/genre. Copy-to-clipboard button. Green glow gradient background.

The aggregator now tracks totalMinutes (from track durations, defaulting 3.5 min per scrobble), artistFirstListen (earliest date per artist), monthlyScrobbles, and monthlyArtistPlays (artist plays per month for genre evolution).