Onda 3D family: silk-ribbon wireframe of the live waveform

Two bands of fine strands (iso-lines of the band coordinate) flow across
the screen, compressing into moire at the folds like a 3D wireframe
surface. Hue ramps across each band through magenta (warm crest, cool
belly). The centre curve mixes drifting sines with the live waveform;
bass swells the band, beat brightens. Shader family index 57; in the
Auto VJ quiet/groove pools. wamp() now interpolates between waveform
samples to avoid stair-step artifacts (also smooths Onda Luminosa).

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

src/output.js

@@ -483,10 +483,10 @@ let frames = 0, fpsT = performance.now(), fps = 0, lastReport = 0, prevBeat = 0,
 let autoVj = false, avLastSwitch = 0, avBeatMark = 0, avRecent = [];
 const AV_POOLS = {
   quiet: ['Cielo', 'Aurora', 'Mare', 'Montagne', 'Galassia', 'Nuvole', 'Fluido', 'Onde',
-    'Onda Luminosa'],
+    'Onda Luminosa', 'Onda 3D'],
   groove: ['Plasma', 'Vortice', 'Truchet', 'Esagoni', 'Spirale', 'Cellule', 'Gyroide',
     'Fluido', 'Fluido Onda', 'Fluido Vortici', 'Griglia Neon', 'Solidi 3D', 'Tunnel Neon',
-    'Onda Luminosa', 'Spettro Neon'],
+    'Onda Luminosa', 'Spettro Neon', 'Onda 3D'],
   peak: ['Julia', 'Iperspazio', 'Tunnel', 'Moiré', 'Fluido Anello', 'Fluido Fuoco',
     'Vortice', 'Griglia Neon', 'Cristalli', 'Tunnel Neon', 'Tempesta Plasma', 'Spettro Neon']
 };