fix(i18n): eliminate portuguese text leaks across english routes

- Localize skip-to-content accessibility link and breadcrumb navigation
- Convert section layouts to dynamic generateMetadata with English titles, descriptions, and structured data
- Eliminate mixed language expressions and translate remaining SoC connection pin warnings and descriptions
- Translate component registry items, categories, tags, and IDF Component Manager guide
- Add strict identical string verification to scripts/check-i18n.mjs with technical allowlist

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

app/[locale]/catalogo/layout.jsx

@@ -1,13 +1,25 @@
 import { paginaMeta, jsonLd } from "@/lib/seo";
 
-export const metadata = paginaMeta({
-	titulo: "Catálogo de placas ESP32",
-	descricao: "Placas de desenvolvimento com ESP32 disponíveis no Brasil, com filtro por série, conector e conversor USB-serial.",
-	caminho: "/catalogo",
-	keywords: ["placas ESP32", "DevKit ESP32", "comprar ESP32", "ESP32 DevKitC"],
-});
+export async function generateMetadata({ params }) {
+	const { locale } = await params;
+	const isEn = locale === "en";
+	return paginaMeta({
+		titulo: isEn ? "ESP32 Board Catalog" : "Catálogo de placas ESP32",
+		descricao: isEn
+			? "ESP32 development boards and DevKits available in Brazil, with filters by series, connector, and USB-serial converter."
+			: "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"]
+			: ["placas ESP32", "DevKit ESP32", "comprar ESP32", "ESP32 DevKitC"],
+	});
+}
+
+export default async function Layout({ children, params }) {
+	const { locale } = await params;
+	const isEn = locale === "en";
 
-export default function Layout({ children }) {
 	return (
 		<>
 			<script
@@ -15,9 +27,12 @@ export default function Layout({ children }) {
 				dangerouslySetInnerHTML={{
 					__html: JSON.stringify(
 						jsonLd.aplicacaoWeb({
-							nome: "Catálogo de Placas ESP32",
-							descricao: "Guia e catálogo interativo de placas de desenvolvimento e DevKits com microcontroladores ESP32.",
-							caminho: "/catalogo",
+							nome: isEn ? "ESP32 Development Board Catalog" : "Catálogo de Placas ESP32",
+							descricao: isEn
+								? "Interactive guide and catalog of development boards and DevKits featuring ESP32 microcontrollers."
+								: "Guia e catálogo interativo de placas de desenvolvimento e DevKits com microcontroladores ESP32.",
+							caminho: isEn ? "/en/catalog" : "/catalogo",
+							locale,
 						})
 					),
 				}}
@@ -27,8 +42,8 @@ export default function Layout({ children }) {
 				dangerouslySetInnerHTML={{
 					__html: JSON.stringify(
 						jsonLd.trilha([
-							{ nome: "Início", caminho: "/" },
-							{ nome: "Catálogo de Placas", caminho: "/catalogo" },
+							{ nome: isEn ? "Home" : "Início", caminho: isEn ? "/en" : "/" },
+							{ nome: isEn ? "Board Catalog" : "Catálogo de Placas", caminho: isEn ? "/en/catalog" : "/catalogo" },
 						])
 					),
 				}}