An Astro blog that picks related posts from its own tags — IDF weighting and a measured floor
Picking related posts at build time from tag overlap weighted by tag rarity, why TF-IDF over three languages fails, and how the score floor was measured.
SEO
Reaching a bigger audience while your own copy stays primary — rel=canonical and full-text RSS
What backlinks and rel=canonical do, why Zenn and Qiita change the plan, and the pipeline that makes republishing an article a paste rather than a project.
Making an Astro blog findable by Google and ChatGPT — robots.txt, JSON-LD, and IndexNow
How this Astro blog got robots.txt, JSON-LD, Markdown twins and IndexNow. The domain was not why Google could not find it, and llms.txt was not the fix.