agent-skill-groups v0.3.30

Release v0.3.30 publishes the canonical-rank visibility work and refreshes installable artifacts.\n\nHighlights:\n- Adds canonical GitHub rank pressure tracking with --canonical-required-rank.\n- Refreshes public visibility reports and Pages metadata for GitHub skill-group and GitHub agent-skill-group discovery.\n- Publishes a verified wheel and source archive for the current CLI.\n\nVerification before release:\n- python -m pytest -q => 54 passed\n- python -m build => wheel and sdist built\n- Installed dist/agent_skill_groups-0.3.30-py3-none-any.whl in a fresh venv; version import returned 0.3.30; runtimes and demo --json succeeded\n- CI and Pages for commit 62aae5b completed successfully