I wrote it up. The full system reference is here: https://blakecrosley.com/guides/obsidian — vault architecture, hybrid retrieval (Model2Vec + FTS5 + RRF), MCP integration, incremental indexing, operational patterns. Covers everything from a 200-file vault to the 16,000-file setup I run.

The hybrid retriever piece has its own deep dive with the RRF math and an interactive fusion calculator: https://blakecrosley.com/blog/hybrid-retriever-obsidian

See what your coding agent thinks of it and let me know if you have ways to improve it.