home: promote cluster-resilience post in the homepage carousel (#168)

feat(home): promote cluster-resilience post in the homepage carousel

Add a featured blog slide (DE + EN) for the Light edition 'When a Server Fails'
as the newest entry in the home carousel; image served from R2 via
/images/blog/cluster-topology-social.png.

Author: TheMeinerLP

content/carousel/de/home.json

@@ -13,6 +13,16 @@
       "alt": "Tempel-Bau auf unserem Server (Screenshot)",
       "note": "Impressionen aus der Community – mehr Eindrücke folgen im Blog."
     },
+    {
+      "type": "blog",
+      "title": "Wenn ein Server ausfällt – und niemand merkt es",
+      "href": "/de/blog/wenn-ein-server-ausfaellt-cluster-resilienz",
+      "excerpt": "Wie wir unser Cluster Stück für Stück ausfallsicher gemacht haben – in Alltagsbildern erzählt.",
+      "image": "/images/blog/cluster-topology-social.png",
+      "author": "Phillipp Glanz",
+      "date": "2026-06-13",
+      "tag": "Blog"
+    },
     {
       "type": "blog",
       "title": "Otis: Zentrale Spielerstammdaten für Minecraft",

content/carousel/en/home.json

@@ -13,6 +13,16 @@
       "alt": "Temple build on our server (screenshot)",
       "note": "Impressions from the community – see more in the blog."
     },
+    {
+      "type": "blog",
+      "title": "When a Server Fails – and Nobody Notices",
+      "href": "/en/blog/when-a-server-fails-cluster-resilience",
+      "excerpt": "How we made our cluster resilient step by step – told in everyday images.",
+      "image": "/images/blog/cluster-topology-social.png",
+      "author": "Phillipp Glanz",
+      "date": "2026-06-13",
+      "tag": "Blog"
+    },
     {
       "type": "blog",
       "title": "DevBlog #1",