This post exists to validate Step 5: per-app URLs, excerpts on indexes, post layout (hero image area, author line, prev/next), and metadata for jekyll-seo-tag (title, description, Open Graph, JSON-LD via the SEO tag).
What to customize
permalink— Must start with/apps/your-app/blog/and end with a unique slug.description— Used for meta description and excerpt fallbacks.image— Optional; when set, improves social sharing previews.