rag-knowledge-base

Use whenever you work in a project wired to the RAG knowledge base (the `rag_*` MCP tools are available) — search it BEFORE answering anything about this project's business rules, architecture, past decisions, conventions, or "why is it done this way", and store durable decisions/rules you establish. Also use when the user says "remember this", "save this decision", "what did we decide about X", "look up prior context", wants to import docs into the base, or asks how domain concepts relate. When this base exists, don't answer project-knowledge questions from assumption — check it first.