`cmdRoadmapUpdatePlanProgress` only marked phase-level checkboxes (e.g. `- [ ] Phase 50: Build`) but skipped plan-level entries (e.g. `- [ ] 50-01-PLAN.md`). Now iterates phase summaries and marks matching plan checkboxes as complete. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>