Local-first RAG over my Obsidian vault — hand-rolled hybrid retrieval (BM25 + embeddings + RRF), cited answers, MCP server for AI agents.
2 files for Codex, OpenCode and Claude Code: rag-vault AGENTS.md, rag-vault CLAUDE.md — 265 tokens loaded in every session.
AGENTS.md A 260 tok CLAUDE.md A 5 tok These files are maxrotemberg04-spec/rag-vault's own configuration — they tell Codex, OpenCode and Claude Code how to work on this repository, so they are not mods to install elsewhere. Copy one as a starting point and replace the parts that are about this project.