List every GitHub repo the authenticated user owns or controls — including every repo in organizations they own — check in parallel which ones have open PRs, and for each of those run sweep-dependency-prs. Use whenever the user wants a morning GitHub sweep across all their repos and orgs, to process Dependabot/Renovate PRs in every repo they own, or to fan out sweep-dependency-prs in parallel. Also triggers on /sweep-all-dependency-prs with optional parallel|sequential.
