KeelrLeek
1765de65cf
Chosen on waveform-arrive.html (M2, direct morph, 1000ms): when a track has its whole waveform at once — a local file, a fully-cached stream, or the final decode replacing a stream's progressive peaks — every bar eases from whatever the lane currently shows straight into the new shape, all together. From the resting dots that reads as a uniform grow; from a mid-sweep swell or the previous track's bars it is literally one waveform transforming into another. The streaming rise keeps its left-to-right story untouched; the morph fires only on a peaks swap at coverage 1, and never on a resize, which re-lays the same shape and stays instant. The canvas keeps a record of what it actually painted last frame — dots, swell, rise, morph or settled — so the morph always starts from the truth on screen, and the fade colours (accent, boundary blend, hover wash) stay live through it. The rail mirrors the motion in CSS: an `arriving` class carries the same 1000ms house-ease height transition, placed after the rise rule so a stream's final decode arrives on this ease too. Measured live on a cached start: bar heights walked 5.2 → 8.2 → 10.6 → 12.3 → 13.6 → 14.6 → 15.0 and settled at 15.1 at the 1000ms mark — the ease-out curve, frame by frame.