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>

components/SeriesTabMenu.jsx

@@ -2,7 +2,9 @@
 
 import { useEffect, useRef, useState } from "react";
 
-export default function SeriesTabMenu({ tabs, isEn = false }) {
+export default function SeriesTabMenu({ tabs, isEn = false, isEs = false, locale }) {
+	const effectiveIsEn = isEn || locale === "en";
+	const effectiveIsEs = isEs || locale === "es";
 	const availableTabs = tabs.filter((tab) => tab.available);
 	const [activeTab, setActiveTab] = useState(availableTabs[0]?.id);
 	const refs = useRef({});
@@ -59,7 +61,7 @@ export default function SeriesTabMenu({ tabs, isEn = false }) {
 
 	return (
 		<div id="diagrama-abas" className="scroll-mt-28">
-			<div role="tablist" aria-label={isEn ? "Board and diagram" : "Placa e diagrama"} className="no-scrollbar flex gap-2 overflow-x-auto pb-1">
+			<div role="tablist" aria-label={effectiveIsEn ? "Board and diagram" : effectiveIsEs ? "Placa y diagrama" : "Placa e diagrama"} className="no-scrollbar flex gap-2 overflow-x-auto pb-1">
 				{availableTabs.map((tab, indice) => (
 					<button
 						key={tab.id}