Restyle the docs OG image and fix the landing page social image

app/components/OgImage/Docs.takumi.vue

@@ -0,0 +1,42 @@
+<script lang="ts" setup>
+const { title, description, headline } = defineProps<{ title?: string, description?: string, headline?: string }>()
+
+const appConfig = useAppConfig()
+const { name: siteName } = useSiteConfig()
+const primaryColor = appConfig.ui?.colors?.primary ?? 'emerald'
+</script>
+
+<template>
+  <div class="w-full h-full flex flex-col justify-between bg-[#0B0A0A] px-[80px] py-[60px]">
+    <!-- Same shape, colors and blur as the site's own :ellipsis component: a wide
+         flat oval filled with its diagonal blue/cyan gradient, then blurred. -->
+    <div class="absolute blur-3xl top-[80px] right-[50px] w-[900px] h-[360px] rounded-full bg-[linear-gradient(97.62deg,rgba(0,71,225,0.18)_2.27%,rgba(26,214,255,0.12)_65%,rgba(0,71,225,0.12)_98.48%)]" />
+
+    <div class="flex-1 flex flex-col justify-center">
+      <p
+        v-if="headline"
+        :class="`uppercase text-[22px] font-bold m-0 mb-5 tracking-[0.05em] text-${primaryColor}-500`"
+      >
+        {{ headline }}
+      </p>
+      <h1
+        v-if="title"
+        class="m-0 mb-6 text-[50px] font-bold text-white leading-[1.1] w-full max-w-[900px] wrap-break-word"
+      >
+        {{ title?.slice(0, 60) }}
+      </h1>
+      <p
+        v-if="description"
+        class="m-0 text-[28px] text-neutral-400 leading-[1.4] w-full max-w-[900px] wrap-break-word"
+      >
+        {{ description?.slice(0, 200) }}
+      </p>
+    </div>
+
+    <div class="flex">
+      <div class="text-white text-[18px] font-normal rounded-lg px-5 py-2">
+        {{ siteName }}
+      </div>
+    </div>
+  </div>
+</template>

content/en/index.md

@@ -1,6 +1,8 @@
 ---
 title: Home
 description: Homelab documentation by Djeex, self-hosting guides for Debian, Docker, networking, storage, and more.
+seo:
+  ogImage: /img/social.png
 ---
 
 :ellipsis{right=0px width=75% blur=150px zIndex=60}

content/fr/index.md

@@ -1,6 +1,8 @@
 ---
 title: Accueil
 description: Documentation homelab par Djeex — guides d'auto-hébergement pour Debian, Docker, réseau, stockage et bien plus.
+seo:
+  ogImage: /img/social.png
 ---
 
 :ellipsis{right=0px width=75% blur=150px zIndex=60}