Plugin catalog index status and update

Bring one release's downstream plugin catalog index current, and say what is still blocked. Supported plugins only. The index this skill publishes is quay.io/rhdh/plugin-catalog-index.

Run scripts/catalog_index_status.py by path. It prints JSON and does not prompt, commit, or push.

Gate

Run check-login before resolving a version, fetching status, or touching git. A refused login stops the skill. Load references/konflux-wait.md and wait until the user has an oc session.

Resolve

Ask for x.y.z or a branch (main, release-2.1) when the user named neither. Then:

python3 scripts/catalog_index_status.py resolve --branch <branch> --version <x.y.z> --catalog-root <worktree>

Pass whichever half the user gave. The script reads version from redhat-developer/rhdh package.json on that branch, and uses release-X.Y when that catalog branch exists, otherwise main.