feat(i18n): French and German localization (phase 5)

- Add full message catalogs and content for French (fr) and German (de)
- Implement ASCII canonical slugs for French and German routes
- Add language-specific search endpoints (/api/busca/fr, /api/busca/de)
- Configure strict 404 responses for /fr/livro and /de/livro
- Localize SEO, OpenGraph (fr_FR, de_DE), Twitter and JSON-LD schemas
- Add localized code example comments across 14 examples for fr and de
- Enable 'fr' and 'de' in ENABLED_LOCALES with root negotiation and redirect
- Extend test suite in check-i18n, smoke-imagem and verifica-vazamentos

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

app/[locale]/frameworks/layout.jsx

@@ -4,17 +4,27 @@ export async function generateMetadata({ params }) {
 	const { locale } = await params;
 	const isEn = locale === "en";
 	const isEs = locale === "es";
+	const isFr = locale === "fr";
+	const isDe = locale === "de";
 	return {
 		...paginaMeta({
 			titulo: isEs
 				? "Frameworks y SDKs para ESP32: Guía completa y comparativa"
 				: isEn
 				? "ESP32 Frameworks & SDKs: Complete Guide and Comparison"
+				: isFr
+				? "Frameworks et SDKs pour ESP32 : guide complet et comparatif"
+				: isDe
+				? "ESP32-Frameworks & SDKs: Vollständiger Leitfaden und Vergleich"
 				: "Frameworks & SDKs para ESP32: Guia Completo e Comparativo",
 			descricao: isEs
 				? "Guía completa de desarrollo: ESP-IDF, ESP-RainMaker, ESP-Matter, Rust, ESP-ADF, ESP-SR, ESP-WHO, Arduino y MicroPython con ejemplos de código."
 				: isEn
 				? "Complete development guide: ESP-IDF, ESP-RainMaker, ESP-Matter, Rust, ESP-ADF, ESP-SR, ESP-WHO, Arduino, and MicroPython with code examples."
+				: isFr
+				? "Guide complet de développement : ESP-IDF, ESP-RainMaker, ESP-Matter, Rust, ESP-ADF, ESP-SR, ESP-WHO, Arduino et MicroPython avec exemples de code."
+				: isDe
+				? "Vollständiger Entwicklungsleitfaden: ESP-IDF, ESP-RainMaker, ESP-Matter, Rust, ESP-ADF, ESP-SR, ESP-WHO, Arduino und MicroPython mit Codebeispielen."
 				: "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,
@@ -46,6 +56,34 @@ export async function generateMetadata({ params }) {
 						"frameworks ESP32",
 						"program ESP32",
 					]
+				: isFr
+				? [
+						"ESP-IDF",
+						"ESP-RainMaker",
+						"ESP-Matter",
+						"Rust ESP32",
+						"ESP-SR",
+						"ESP-ADF",
+						"ESP-IoT-Solution",
+						"Arduino ESP32",
+						"MicroPython ESP32",
+						"frameworks ESP32",
+						"programmer ESP32",
+					]
+				: isDe
+				? [
+						"ESP-IDF",
+						"ESP-RainMaker",
+						"ESP-Matter",
+						"Rust ESP32",
+						"ESP-SR",
+						"ESP-ADF",
+						"ESP-IoT-Solution",
+						"Arduino ESP32",
+						"MicroPython ESP32",
+						"ESP32 Frameworks",
+						"ESP32 programmieren",
+					]
 				: [
 						"ESP-IDF",
 						"ESP-RainMaker",
@@ -67,6 +105,8 @@ export default async function FrameworksLayout({ children, params }) {
 	const { locale } = await params;
 	const isEn = locale === "en";
 	const isEs = locale === "es";
+	const isFr = locale === "fr";
+	const isDe = locale === "de";
 	return (
 		<>
 			<script
@@ -74,8 +114,8 @@ export default async function FrameworksLayout({ children, params }) {
 				dangerouslySetInnerHTML={{
 					__html: JSON.stringify(
 						jsonLd.trilha([
-							{ nome: isEs ? "Inicio" : isEn ? "Home" : "Início", caminho: isEs ? "/es" : isEn ? "/en" : "/" },
-							{ nome: "Frameworks", caminho: isEs ? "/es/frameworks" : isEn ? "/en/frameworks" : "/frameworks" },
+							{ nome: isEs ? "Inicio" : isEn ? "Home" : isFr ? "Accueil" : isDe ? "Startseite" : "Início", caminho: isEs ? "/es" : isEn ? "/en" : isFr ? "/fr" : isDe ? "/de" : "/" },
+							{ nome: "Frameworks", caminho: isEs ? "/es/frameworks" : isEn ? "/en/frameworks" : isFr ? "/fr/frameworks" : isDe ? "/de/frameworks" : "/frameworks" },
 						])
 					),
 				}}