feat(og): add logo and dynamic faded background image to OG templates

app/[locale]/blog/[slug]/opengraph-image.tsx

@@ -1,7 +1,7 @@
 import { ImageResponse } from 'next/og';
 import { getPostBySlug } from '@/lib/blog';
 import { OGImageTemplate } from '@/components/OGImageTemplate';
-import { getOgFonts, OG_IMAGE_SIZE } from '@/lib/og-helper';
+import { getOgFonts, OG_IMAGE_SIZE, getOgAssets } from '@/lib/og-helper';
 import { SITE_URL } from '@/lib/schema';
 
 export const size = OG_IMAGE_SIZE;
@@ -35,6 +35,7 @@ export default async function Image({
   }
 
   const fonts = await getOgFonts();
+  const { logo, bgImage } = getOgAssets();
 
   // We don't have request.url here, but we can assume the domain from SITE_URL or config
   // For local images during dev, relative paths in <img> might not work in Satori
@@ -55,10 +56,11 @@ export default async function Image({
 
   return new ImageResponse(
     <OGImageTemplate
+      logo={logo}
       title={post.frontmatter.title}
       description={post.frontmatter.excerpt}
       label={post.frontmatter.category || 'Blog'}
-      image={base64Image || featuredImage}
+      image={base64Image || featuredImage || bgImage}
     />,
     {
       ...OG_IMAGE_SIZE,