fix(ui): make Justine palette visible on marketing + trim rainbow chrome

- Replace blue/purple gradients with ink gradient text and cream/parch CTA surface
- Step badges and transformation icons use primary (ink) fills
- /features page icons unified to text-primary; Lora section titles
- Tree view status colors use semantic tokens instead of blue/green

Made-with: Cursor

marketing/components/footer.tsx

@@ -35,7 +35,7 @@ export function Footer() {
           <div className="col-span-2 md:col-span-1">
             <Link href="/" className="flex items-center gap-2 mb-4">
               <img src="/vibn-black-circle-logo.png" alt="Vib'n" className="h-8 w-8" />
-              <span className="text-lg font-bold">Vib&apos;n</span>
+              <span className="font-serif text-lg font-bold tracking-tight">Vib&apos;n</span>
             </Link>
             <p className="text-sm text-muted-foreground leading-relaxed max-w-[220px]">
               AI-powered development platform for vibe coders. From idea to market.