fix: a11y (gold-deep token AA, Disciplinas ul/li, Cierre nav) + scaffold cleanup

- Add gold-deep #7A5F15 token (~5.97:1 on white, WCAG AA) for small-text eyebrows
- Apply text-gold-deep to 4 eyebrows (Hero, Disciplinas, ComoEmpezar, Estratega)
- Disciplinas: div grid → semantic ul/li for screen-reader consistency
- Cierre: wrap contact links in <nav aria-label="Contacto">
- Estratega: portrait gradient → Tailwind tokens (from-ink to-gold), drop inline hex
- Delete unused Geist fonts (app/fonts/, ~134KB)
- Replace default README with creeer README
- Tests: +2 structural (Disciplinas ul/li, Cierre nav aria-label)

components/sections/ComoEmpezar.tsx

@@ -13,7 +13,7 @@ export function ComoEmpezar() {
     <section className="bg-base">
       <Container className="py-24 md:py-32">
         <motion.p variants={fadeInUp} initial="hidden" whileInView="visible" viewport={viewportOnce} {...motionProps(reduced)}
-          className="text-xs tracking-[0.3em] uppercase font-semibold text-gold">{comoEmpezar.eyebrow}</motion.p>
+          className="text-xs tracking-[0.3em] uppercase font-semibold text-gold-deep">{comoEmpezar.eyebrow}</motion.p>
         <motion.h2 variants={fadeInUp} initial="hidden" whileInView="visible" viewport={viewportOnce} {...motionProps(reduced)}
           className="mt-4 font-serif italic font-bold text-3xl md:text-5xl text-ink">{comoEmpezar.title}</motion.h2>
         <motion.ol variants={staggerContainer} initial="hidden" whileInView="visible" viewport={viewportOnce} {...motionProps(reduced)}