Original post: Building a tag system in Astro Series: Part of How this blog was built — documenting every decision that shaped this site. Tags do more than connect related posts. They create a second navigation system. On this site the same tag data powers the blog archive cloud, the dedicated /tags overview, paginated tag archive pages, and a sidebar browser on individual post pages. The key constraint is consistency. If each surface counts tags differently, builds URLs differently, or decides for itself which posts are visible, the whole system drifts. The implementation here stays simple by sharing two rules everywhere: one slug helper and one publication filter. A later update added per-tag descriptions, a featured post highlight, related topics, and a stats bar, all covered in the second half of this post. Diagram fallback for Dev.to. View the canonical article for the original SVG: https://sourcier.uk/blog/tag-system-astro Slug normalisation Every tag is displayed as-is, but routed via a URL-safe slug.…