Scenic family "Supernova": cosmic burst with electric tendrils

From the reference video: bright crackling core, organic branching
lightning filaments (ridged fbm in mirrored polar space, slowly rotating
to hide the seam), two layers of radial particle streaks flowing outward,
nebula haze. Bass pumps filaments and outflow speed, beat punches the
core, treble twinkles the particles. Family index 43 (fieldRGB path).

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

src/effects.js

@@ -52,7 +52,8 @@ const FAMILIES = [
   { name: 'Solidi 3D', scale: 1.0 },
   { name: 'Griglia Neon', scale: 1.0 },
   { name: 'Tunnel Neon', scale: 1.0 },
-  { name: 'Tempesta Plasma', scale: 1.0 }
+  { name: 'Tempesta Plasma', scale: 1.0 },
+  { name: 'Supernova', scale: 1.0 }
 ];
 
 // Palettes: low colour (a) -> high colour (b), plus optional hue-cycle/sat.