Track workflow.md migration follow-up and phased review for PR #1567

[dickymoore]

Context\nPR #1567 is a large workflow migration that removes legacy workflow.xml/workflow.yaml usage and completes step-file conversion across key workflows.\n\n## Why this issue\nThis tracks the migration scope and provides explicit issue linkage per contributing guidance for large changes.\n\n## Acceptance for this tracking issue\n- [ ] Confirm final review feedback items are addressed for PR #1567\n- [ ] Confirm workflow runner + CLI install behavior for workflow.md/workflow-*.md\n- [ ] Confirm step-flow conversion status for remaining workflows\n- [ ] Decide whether any remaining cleanup should be split into follow-up PRs\n\nLinked PR: #1567\n