feat: immerse the portfolio in a chromatic synthwave night

Carry rose, violet, coral, electric blue and cyan through the interface, road, terrain, signs and atmosphere. Add a Blender-authored paint edition and matching runtime fallback captures. Interpolate atmospheric color on a small sky lattice and enrich existing speed effects without another rendering pass.

Preserve approved copy, project media, metadata, navigation contracts and adaptive audio. Verified with typecheck, client/SSR builds, validated prerendering, artifact and transfer checks, responsive Chrome interaction, fallback checks and Intel-backed performance sampling.

src/scene/world/horizon-air.ts

@@ -29,8 +29,10 @@ export function createHorizonAir(resources: SceneResourceBag) {
         float ribbon=exp(-pow((vUv.y-0.45-wave)*5.6,2.0));
         float thin=exp(-pow((vUv.y-0.51-wave)*37.0,2.0));
         float horizontal=pow(max(0.0,sin(vUv.x*3.14159)),2.0);
-        vec3 color=mix(uColor,vec3(0.21,0.49,0.59),vUv.y*0.25);
-        gl_FragColor=vec4(color,(ribbon*0.12+thin*0.026)*horizontal*(0.6+uWarmth*0.4));
+        float colorWave=0.5+0.5*sin(vUv.x*7.0+uTime*0.035);
+        vec3 color=mix(uColor,vec3(0.27,0.045,0.75),colorWave*0.55);
+        color=mix(color,vec3(0.05,0.52,0.75),smoothstep(0.54,0.82,vUv.y)*0.3);
+        gl_FragColor=vec4(color,(ribbon*0.16+thin*0.032)*horizontal*(0.7+uWarmth*0.3));
         #include <tonemapping_fragment>
         #include <colorspace_fragment>
       }