feat: blog posts og image

app/components/BlogPostWrapper.vue

@@ -13,6 +13,12 @@ useSeoMeta({
   ogType: 'article',
 })
 
+defineOgImageComponent('BlogPost', {
+  title: props.frontmatter.title,
+  authors: props.frontmatter.authors,
+  date: props.frontmatter.date,
+})
+
 const slug = computed(() => props.frontmatter.slug)
 
 // Use Constellation to find the Bluesky post linking to this blog post

app/components/OgImage/BlogPost.vue

@@ -0,0 +1,142 @@
+<script setup lang="ts">
+import type { Author } from '#shared/schemas/blog'
+
+const props = withDefaults(
+  defineProps<{
+    title: string
+    authors?: Author[]
+    date?: string
+    primaryColor?: string
+  }>(),
+  {
+    authors: () => [],
+    date: '',
+    primaryColor: '#60a5fa',
+  },
+)
+
+const { resolvedAuthors } = useAuthorProfiles(props.authors)
+
+const formattedDate = computed(() => {
+  if (!props.date) return ''
+  try {
+    return new Date(props.date).toLocaleDateString('en-US', {
+      year: 'numeric',
+      month: 'short',
+      day: 'numeric',
+    })
+  } catch {
+    return props.date
+  }
+})
+
+const MAX_VISIBLE_AUTHORS = 2
+
+const getInitials = (name: string) =>
+  name
+    .split(' ')
+    .map(n => n[0])
+    .join('')
+    .toUpperCase()
+    .slice(0, 2)
+
+const visibleAuthors = computed(() => {
+  if (resolvedAuthors.value.length <= 3) return resolvedAuthors.value
+  return resolvedAuthors.value.slice(0, MAX_VISIBLE_AUTHORS)
+})
+
+const extraCount = computed(() => {
+  if (resolvedAuthors.value.length <= 3) return 0
+  return resolvedAuthors.value.length - MAX_VISIBLE_AUTHORS
+})
+
+const formattedAuthorNames = computed(() => {
+  const allNames = resolvedAuthors.value.map(a => a.name)
+  if (allNames.length === 0) return ''
+  if (allNames.length === 1) return allNames[0]
+  if (allNames.length === 2) return `${allNames[0]} and ${allNames[1]}`
+  if (allNames.length === 3) return `${allNames[0]}, ${allNames[1]}, and ${allNames[2]}`
+  // More than 3: show first 2 + others
+  const shown = allNames.slice(0, MAX_VISIBLE_AUTHORS)
+  const remaining = allNames.length - MAX_VISIBLE_AUTHORS
+  return `${shown.join(', ')} and ${remaining} others`
+})
+</script>
+
+<template>
+  <div
+    class="h-full w-full flex flex-col justify-center px-20 bg-[#050505] text-[#fafafa] relative overflow-hidden"
+  >
+    <!-- npmx logo - top right -->
+    <div
+      class="absolute top-12 z-10 flex items-center gap-1 text-5xl font-bold tracking-tight"
+      style="font-family: 'Geist Sans', sans-serif; right: 4rem"
+    >
+      <span :style="{ color: primaryColor }" class="opacity-80">./</span>
+      <span class="text-white">npmx</span>
+    </div>
+
+    <div class="relative z-10 flex flex-col gap-2">
+      <!-- Date -->
+      <span
+        v-if="formattedDate"
+        class="text-3xl text-[#a3a3a3] font-light"
+        style="font-family: 'Geist Sans', sans-serif"
+      >
+        {{ formattedDate }}
+      </span>
+
+      <!-- Blog title -->
+      <h1
+        class="text-6xl font-semibold tracking-tight leading-snug w-9/10"
+        style="font-family: 'Geist Sans', sans-serif; letter-spacing: -0.03em"
+      >
+        {{ title }}
+      </h1>
+
+      <!-- Authors -->
+      <div
+        v-if="resolvedAuthors.length"
+        class="flex items-center gap-4 self-start justify-start flex-nowrap"
+        style="font-family: 'Geist Sans', sans-serif"
+      >
+        <!-- Stacked avatars -->
+        <span>
+          <span
+            v-for="(author, index) in visibleAuthors"
+            :key="author.name"
+            class="flex items-center justify-center rounded-full border border-[#050505] bg-[#1a1a1a] overflow-hidden w-12 h-12"
+            :style="{ marginLeft: index > 0 ? '-20px' : '0' }"
+          >
+            <img
+              v-if="author.avatar"
+              :src="author.avatar"
+              :alt="author.name"
+              class="w-full h-full object-cover"
+            />
+            <span v-else style="font-size: 20px; color: #666; font-weight: 500">
+              {{ getInitials(author.name) }}
+            </span>
+          </span>
+          <!-- +N badge -->
+          <span
+            v-if="extraCount > 0"
+            class="flex items-center justify-center text-lg font-medium text-[#a3a3a3] rounded-full border border-[#050505] bg-[#262626] overflow-hidden w-12 h-12"
+            :style="{ marginLeft: '-20px' }"
+          >
+            +{{ extraCount }}
+          </span>
+        </span>
+        <!-- Names -->
+        <span style="font-size: 24px; color: #a3a3a3; font-weight: 300">{{
+          formattedAuthorNames
+        }}</span>
+      </div>
+    </div>
+
+    <div
+      class="absolute -top-32 -inset-ie-32 w-[550px] h-[550px] rounded-full blur-3xl"
+      :style="{ backgroundColor: primaryColor + '10' }"
+    />
+  </div>
+</template>