https://retrieval-architecture.vercel.app/ weekly 1.0 https://retrieval-architecture.vercel.app/audits monthly 0.8 https://retrieval-architecture.vercel.app/blog weekly 0.8 https://retrieval-architecture.vercel.app/blog/llms-txt-wont-get-you-cited-on-its-own 2026-08-24 monthly 0.6