📝 Sync v3 docs and content across all nine languages

New shortcode sections, landing layout docs, agent skill sections,
v2→v3 upgrade instructions, translated homepages, and sample
article feature images.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

exampleSite/content/docs/firebase-views/index.de.md

@@ -1,5 +1,6 @@
 ---
 title: "Firebase: Aufrufe & Likes"
+featureimage: "images/v3/content-network.png"
 weight: 15
 draft: false
 description: "Erfahren Sie, wie Sie Firebase integrieren und dynamische Daten für Aufrufe und Likes erhalten."

exampleSite/content/docs/firebase-views/index.es.md

@@ -1,5 +1,6 @@
 ---
 title: "Firebase: Vistas & Likes"
+featureimage: "images/v3/content-network.png"
 weight: 15
 draft: false
 description: "Aprende cómo integrar Firebase y obtener datos dinámicos para vistas y likes."

exampleSite/content/docs/firebase-views/index.fr.md

@@ -1,5 +1,6 @@
 ---
 title: "Firebase : Vues & Likes"
+featureimage: "images/v3/content-network.png"
 weight: 15
 draft: false
 description: "Apprenez à intégrer Firebase et obtenir des données dynamiques pour les vues et les likes."

exampleSite/content/docs/firebase-views/index.it.md

@@ -1,5 +1,6 @@
 ---
 title: "Firebase: Views & Likes"
+featureimage: "images/v3/content-network.png"
 weight: 15
 draft: false
 description: "Learn how to integrate Firebase and get dynamic data for views and likes."

exampleSite/content/docs/firebase-views/index.ja.md

@@ -1,5 +1,6 @@
 ---
 title: "Firebase: 閲覧数といいね"
+featureimage: "images/v3/content-network.png"
 weight: 15
 draft: false
 description: "Firebase を統合して、閲覧数といいねの動的データを取得する方法を学びます。"

exampleSite/content/docs/firebase-views/index.pt-br.md

@@ -1,5 +1,6 @@
 ---
 title: "Firebase: Visualizações & Curtidas"
+featureimage: "images/v3/content-network.png"
 weight: 15
 draft: false
 description: "Aprenda como integrar o Firebase e obter dados dinâmicos para visualizações e curtidas."

exampleSite/content/docs/firebase-views/index.pt-pt.md

@@ -1,5 +1,6 @@
 ---
 title: "Firebase: Visualizações & Gostos"
+featureimage: "images/v3/content-network.png"
 weight: 15
 draft: false
 description: "Aprenda como integrar o Firebase e obter dados dinâmicos para visualizações e gostos."

exampleSite/content/docs/firebase-views/index.zh-cn.md

@@ -1,5 +1,6 @@
 ---
 title: "Firebase: 阅读量 & 点赞量"
+featureimage: "images/v3/content-network.png"
 weight: 15
 draft: false
 description: "了解 Blowfish 如何集成 Firebase，并动态显示阅读量和点赞量。"