feat(i18n): Spanish localization (phase 4)

Complete implementation of Spanish (es-419) language support:
- Canonical catalogs and data: messages/es.json, data/es/**, lib/data/es/**, public/exemplos/es/**
- Canonical slugs: /es/series, /es/catalogo, /es/comparacion, /es/componentes, /es/diagnostico, /es/frameworks, /es/glosario, /es/selector, /es/acerca
- Dedicated search index at /api/busca/es with Spanish accent normalization
- Strict exclusion of book references in Spanish routes and catalogs
- Language selector and root negotiation with es active (ENABLED_LOCALES = ['pt', 'en', 'es'])
- Extended verification suite: check-i18n, smoke-imagem and verifica-vazamentos

Co-Authored-By: Antigravity <noreply@google.com>

app/[locale]/catalogo/layout.jsx

@@ -3,15 +3,20 @@ import { paginaMeta, jsonLd } from "@/lib/seo";
 export async function generateMetadata({ params }) {
 	const { locale } = await params;
 	const isEn = locale === "en";
+	const isEs = locale === "es";
 	return paginaMeta({
-		titulo: isEn ? "ESP32 Board Catalog" : "Catálogo de placas ESP32",
+		titulo: isEn ? "ESP32 Board Catalog" : isEs ? "Catálogo de placas ESP32" : "Catálogo de placas ESP32",
 		descricao: isEn
 			? "ESP32 development boards and DevKits available in Brazil, with filters by series, connector, and USB-serial converter."
+			: isEs
+			? "Placas de desarrollo y DevKits con ESP32, con filtros por serie, conector y conversor USB-serial."
 			: "Placas de desenvolvimento com ESP32 disponíveis no Brasil, com filtro por série, conector e conversor USB-serial.",
 		caminho: "/catalogo",
 		locale,
 		keywords: isEn
 			? ["ESP32 boards", "ESP32 DevKit", "buy ESP32", "ESP32 DevKitC"]
+			: isEs
+			? ["placas ESP32", "DevKit ESP32", "comprar ESP32", "ESP32 DevKitC"]
 			: ["placas ESP32", "DevKit ESP32", "comprar ESP32", "ESP32 DevKitC"],
 	});
 }
@@ -19,6 +24,8 @@ export async function generateMetadata({ params }) {
 export default async function Layout({ children, params }) {
 	const { locale } = await params;
 	const isEn = locale === "en";
+	const isEs = locale === "es";
+	const canonPath = isEn ? "/en/catalog" : isEs ? "/es/catalogo" : "/catalogo";
 
 	return (
 		<>
@@ -27,11 +34,13 @@ export default async function Layout({ children, params }) {
 				dangerouslySetInnerHTML={{
 					__html: JSON.stringify(
 						jsonLd.aplicacaoWeb({
-							nome: isEn ? "ESP32 Development Board Catalog" : "Catálogo de Placas ESP32",
+							nome: isEn ? "ESP32 Development Board Catalog" : isEs ? "Catálogo de placas de desarrollo ESP32" : "Catálogo de Placas ESP32",
 							descricao: isEn
 								? "Interactive guide and catalog of development boards and DevKits featuring ESP32 microcontrollers."
+								: isEs
+								? "Guía y catálogo interactivo de placas de desarrollo y DevKits con microcontroladores ESP32."
 								: "Guia e catálogo interativo de placas de desenvolvimento e DevKits com microcontroladores ESP32.",
-							caminho: isEn ? "/en/catalog" : "/catalogo",
+							caminho: canonPath,
 							locale,
 						})
 					),
@@ -42,8 +51,8 @@ export default async function Layout({ children, params }) {
 				dangerouslySetInnerHTML={{
 					__html: JSON.stringify(
 						jsonLd.trilha([
-							{ nome: isEn ? "Home" : "Início", caminho: isEn ? "/en" : "/" },
-							{ nome: isEn ? "Board Catalog" : "Catálogo de Placas", caminho: isEn ? "/en/catalog" : "/catalogo" },
+							{ nome: isEn ? "Home" : isEs ? "Inicio" : "Início", caminho: isEn ? "/en" : isEs ? "/es" : "/" },
+							{ nome: isEn ? "Board Catalog" : isEs ? "Catálogo de placas" : "Catálogo de Placas", caminho: canonPath },
 						])
 					),
 				}}