Teach wiki-query to split entity overview questions into an ordinary wiki context track and a read-only business facts track, then fuse the results. Update the MCP query prompt to explicitly allow read-only hybrid subagents while preserving public-only and mutating-command restrictions. Add a skill instruction regression test and update docs.
Validation: python3 -m unittest tests/test_wiki_skills.py -v; python3 -m unittest tests/test_mcp_query.py -v; python3 -m unittest tests/test_business_facts.py -v; python3 -m unittest discover -v; python3 -m compileall obsidian_wiki tests scripts; git diff --check