feat(ecommerce): ADR 0008 - buscador azul & amarillo (nunca migrado)

predictive-search.tsx nunca estuvo en el alcance de ninguna sub-fase
de ADR 0008 (sub-fase 2 solo tocaba navbar.tsx/footer.tsx), asi que
seguia con el borde degradado cian/violeta/fucsia y acentos violeta
del esquema arcoiris original -- confirmado visualmente en produccion
(captura del usuario) y en el codigo.

Reemplaza el wrapper de gradiente por un input con borde solido y un
boton circular azul (--color-ari-marino) con la lupa a la derecha, en
vez del icono flotando a la izquierda sobre el degradado. Foco usa
ring amarillo (--color-ari-coral-claro), igual que el resto de
componentes interactivos del sitio (button.tsx). Hover/foco del panel
de resultados y del boton 'Buscar en todo el catalogo' pasan de
violeta a los tokens de marca.

workloads/ecommerce/components/search/predictive-search.tsx

@@ -54,12 +54,12 @@ export function PredictiveSearch() {
 
   return (
     <form onSubmit={submit} className="relative w-full">
-      <div className="rounded-full bg-gradient-to-r from-cyan-400 via-violet-500 to-fuchsia-500 p-[2px] shadow-lg shadow-violet-500/10">
+      <div className="flex items-center rounded-full border-2 border-slate-200 bg-white pl-5 pr-1.5 shadow-sm transition focus-within:border-ari-marino focus-within:ring-4 focus-within:ring-ari-coral-claro/30">
-        <div className="relative rounded-full bg-white">
+        <Input value={query} onChange={(event) => setQuery(event.target.value)} placeholder="Busca juguetes, mochilas, personajes…" className="h-[48px] border-0 bg-transparent p-0 shadow-none focus-visible:ring-0" />
-          <Search className="pointer-events-none absolute left-5 top-1/2 z-10 size-5 -translate-y-1/2 text-violet-600" />
+        {query && <button type="button" aria-label="Limpiar búsqueda" className="mr-1 shrink-0 rounded-full p-1.5 text-slate-400 hover:bg-slate-100" onClick={() => setQuery("")}><X className="size-4" /></button>}
-          <Input value={query} onChange={(event) => setQuery(event.target.value)} placeholder="Busca juguetes, mochilas, personajes…" className="h-[52px] border-0 bg-transparent pl-[52px] pr-12 shadow-none focus-visible:ring-violet-300/30" />
+        <button type="submit" aria-label="Buscar" className="grid size-10 shrink-0 place-items-center rounded-full bg-ari-marino text-white transition hover:brightness-110">
-          {query && <button type="button" aria-label="Limpiar búsqueda" className="absolute right-4 top-1/2 -translate-y-1/2 rounded-full p-1 text-slate-400 hover:bg-slate-100" onClick={() => setQuery("")}><X className="size-4" /></button>}
+          <Search className="size-4.5" />
-        </div>
+        </button>
       </div>
       {loading && normalized.length >= 2 && matches.length === 0 && (
         <div className="absolute left-0 right-0 top-[calc(100%+10px)] z-50 rounded-2xl border border-slate-200 bg-white p-4 text-center text-sm text-slate-500 shadow-2xl">
@@ -69,12 +69,12 @@ export function PredictiveSearch() {
       {matches.length > 0 && (
         <div className="absolute left-0 right-0 top-[calc(100%+10px)] z-50 overflow-hidden rounded-2xl border border-slate-200 bg-white p-2 shadow-2xl">
           {matches.map((product) => (
-            <Link key={product.id} href={`/product/${product.slug}`} prefetch={false} className="grid grid-cols-[54px_1fr] items-center gap-3 rounded-xl p-2 hover:bg-violet-50" onClick={() => setQuery("")}>
+            <Link key={product.id} href={`/product/${product.slug}`} prefetch={false} className="grid grid-cols-[54px_1fr] items-center gap-3 rounded-xl p-2 hover:bg-ari-marino/5" onClick={() => setQuery("")}>
               <div className="relative aspect-square overflow-hidden rounded-lg bg-slate-100"><Image src={product.thumbnail} alt="" fill sizes="54px" className="object-cover" /></div>
               <div><strong className="line-clamp-1 text-sm">{product.name}</strong><span className="text-xs text-slate-500">{product.category} · {product.collection}</span></div>
             </Link>
           ))}
-          <button type="submit" className="mt-1 w-full rounded-xl bg-slate-950 px-4 py-3 text-sm font-black text-white hover:bg-violet-700">Buscar “{query.trim()}” en todo el catálogo</button>
+          <button type="submit" className="mt-1 w-full rounded-xl bg-ari-marino px-4 py-3 text-sm font-black text-white hover:brightness-110">Buscar “{query.trim()}” en todo el catálogo</button>
         </div>
       )}
     </form>