Client feedback: a light/small scroll snapped back to the current card
instead of advancing - native scroll-snap always settles on whichever
card is nearest, and a light nudge rarely crosses the halfway point.
Each wheel burst now tracks its starting card index and net deltaY.
On settle, if the nearest card by position is still the start card but
there was clear directional movement (>4px net), the row advances one
card in that direction instead of springing back - so even a light
wheel tick pages forward. Larger scrolls are unaffected: if the actual
scroll position already lands closer to a farther card, it jumps
straight there (no artificial one-card-per-burst cap), and a burst that
nets out near zero (e.g. wiggling back and forth) correctly stays put.
The settle target is computed the same way the old drag-to-scroll
feature centered cards, and re-enables scroll-snap only after the
settling scrollTo animation would have finished, so it doesn't fight
the smooth scroll.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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