📝 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/welcome/index.de.md

@@ -1,5 +1,6 @@
 ---
 title: "Willkommen bei Blowfish"
+featureimage: "images/v3/welcome.png"
 weight: 1
 draft: false
 description: "Entdecken Sie die Neuerungen in Blowfish Version 2.0."

exampleSite/content/docs/welcome/index.es.md

@@ -1,5 +1,6 @@
 ---
 title: "Bienvenido a Blowfish"
+featureimage: "images/v3/welcome.png"
 weight: 1
 draft: false
 description: "Descubre las novedades de Blowfish versión 2.0."

exampleSite/content/docs/welcome/index.fr.md

@@ -1,5 +1,6 @@
 ---
 title: "Bienvenue sur Blowfish"
+featureimage: "images/v3/welcome.png"
 weight: 1
 draft: false
 description: "Découvrez les nouveautés de Blowfish version 2.0."

exampleSite/content/docs/welcome/index.it.md

@@ -1,5 +1,6 @@
 ---
 title: "Benvenuti a Blowfish"
+featureimage: "images/v3/welcome.png"
 weight: 1
 draft: false
 description: "Scopri le novità della versione 2.0 di Blowfish."

exampleSite/content/docs/welcome/index.ja.md

@@ -1,5 +1,6 @@
 ---
 title: "Blowfish へようこそ"
+featureimage: "images/v3/welcome.png"
 weight: 1
 draft: false
 description: "Blowfish バージョン 2.0 の新機能をご紹介。"

exampleSite/content/docs/welcome/index.pt-br.md

@@ -1,5 +1,6 @@
 ---
 title: "Bem-vindo ao Blowfish"
+featureimage: "images/v3/welcome.png"
 weight: 1
 draft: false
 description: "Descubra as novidades do Blowfish versão 2.0."

exampleSite/content/docs/welcome/index.pt-pt.md

@@ -1,5 +1,6 @@
 ---
 title: "Bem-vindo ao Blowfish"
+featureimage: "images/v3/welcome.png"
 weight: 1
 draft: false
 description: "Descubra as novidades do Blowfish versão 2.0."

exampleSite/content/docs/welcome/index.zh-cn.md

@@ -1,5 +1,6 @@
 ---
 title: "欢迎来到 Blowfish"
+featureimage: "images/v3/welcome.png"
 weight: 1
 draft: false
 description: "探索 Blowfish 2.0版本的新功能。"