Step 9 post-merge cleanup is opt-in and easy to miss (session ends after the merge push, manual merge, or interruption). Once PLAN.md is set to Complete, the folder became invisible to the session-start check, so a skipped cleanup orphaned plans/<feature>/ forever.
Add a session-start reconciliation pass in references/resumability-and-abort.md that detects already-merged features whose plan folder still exists (via Status Complete, 'git branch --merged', or a 'Merge feature/<name>' commit) and re-offers the Step 9 cleanup choices. Cross-referenced from SKILL.md (Key Rule #1, workflow-at-a-glance, Step 9 line) and references/final-review-and-merge.md. Rebuilt the feature-planner.skill bundle.
alexei.dolgolyov
cd0d984930