using-rag-rat

Use when working in a repository indexed by rag-rat (a rag-rat.toml at the root and a rag-rat MCP server available). Establishes the working rule: reach for the rag-rat MCP tools (semantic_search, symbol_lookup, impact_surface, find_callers/trace_callees, repo_brief, important_symbols) to FIND and UNDERSTAND code before falling back to grep/cat, and record durable, non-obvious learnings as rag-rat memories before finishing. Triggers: "use rag-rat", "how do I navigate this repo", any code-understanding task in a rag-rat repo.