feat(i18n): English localization (phase 3)

- Translate content to English across messages/en.json, data/en, lib/data/en, and public/exemplos/en
- Implement localized routing, slugs, and language negotiation with fallback to en
- Build dedicated search index for English with strict book exclusion
- Update components and pages to dynamically render localized strings and datasets
- Verify full structural parity and exact 1:1 match on Portuguese pages via comparator

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

app/[locale]/frameworks/layout.jsx

@@ -1,25 +1,52 @@
 import { paginaMeta, jsonLd } from "@/lib/seo";
 
-export const metadata = paginaMeta({
-	titulo: "Frameworks & SDKs para ESP32: Guia Completo e Comparativo",
-	descricao: "Guia completo de desenvolvimento: ESP-IDF, ESP-RainMaker, ESP-Matter, Rust, ESP-ADF, ESP-SR, ESP-WHO, Arduino e MicroPython com exemplos de código.",
-	caminho: "/frameworks",
-	keywords: [
-		"ESP-IDF",
-		"ESP-RainMaker",
-		"ESP-Matter",
-		"Rust ESP32",
-		"ESP-SR",
-		"ESP-ADF",
-		"ESP-IoT-Solution",
-		"Arduino ESP32",
-		"MicroPython ESP32",
-		"frameworks ESP32",
-		"programar ESP32",
-	],
-});
+export async function generateMetadata({ params }) {
+	const { locale } = await params;
+	const isEn = locale === "en";
+	return {
+		...paginaMeta({
+			titulo: isEn
+				? "ESP32 Frameworks & SDKs: Complete Guide and Comparison"
+				: "Frameworks & SDKs para ESP32: Guia Completo e Comparativo",
+			descricao: isEn
+				? "Complete development guide: ESP-IDF, ESP-RainMaker, ESP-Matter, Rust, ESP-ADF, ESP-SR, ESP-WHO, Arduino, and MicroPython with code examples."
+				: "Guia completo de desenvolvimento: ESP-IDF, ESP-RainMaker, ESP-Matter, Rust, ESP-ADF, ESP-SR, ESP-WHO, Arduino e MicroPython com exemplos de código.",
+			caminho: "/frameworks",
+			locale: isEn ? "en" : "pt",
+			keywords: isEn
+				? [
+						"ESP-IDF",
+						"ESP-RainMaker",
+						"ESP-Matter",
+						"Rust ESP32",
+						"ESP-SR",
+						"ESP-ADF",
+						"ESP-IoT-Solution",
+						"Arduino ESP32",
+						"MicroPython ESP32",
+						"frameworks ESP32",
+						"program ESP32",
+					]
+				: [
+						"ESP-IDF",
+						"ESP-RainMaker",
+						"ESP-Matter",
+						"Rust ESP32",
+						"ESP-SR",
+						"ESP-ADF",
+						"ESP-IoT-Solution",
+						"Arduino ESP32",
+						"MicroPython ESP32",
+						"frameworks ESP32",
+						"programar ESP32",
+					],
+		}),
+	};
+}
 
-export default function FrameworksLayout({ children }) {
+export default async function FrameworksLayout({ children, params }) {
+	const { locale } = await params;
+	const isEn = locale === "en";
 	return (
 		<>
 			<script
@@ -27,8 +54,8 @@ export default function FrameworksLayout({ children }) {
 				dangerouslySetInnerHTML={{
 					__html: JSON.stringify(
 						jsonLd.trilha([
-							{ nome: "Início", caminho: "/" },
-							{ nome: "Frameworks", caminho: "/frameworks" },
+							{ nome: isEn ? "Home" : "Início", caminho: isEn ? "/en" : "/pt" },
+							{ nome: "Frameworks", caminho: isEn ? "/en/frameworks" : "/pt/frameworks" },
 						])
 					),
 				}}