docs/map is the agent-facing exhaustive codebase map (CLAUDE.md) but was never
RAG-indexed — only docs/rag was. Add it to OptimalService._auto_index_dirs so
every docs/map/*.md rides index_documentation (the generic _index_docs_directory
rglobs *.md and routes only the 'standards' subdir to the standards indexer) and
becomes roboco_kb_search-able. No map-specific branch needed.
Co-authored-by: Renn F <rennf93@users.noreply.github.com>
