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+---
+name: "Auto-prune worktrees for archived stories in watcher sweep"
+---
+
+# Story 200: Auto-prune worktrees for archived stories in watcher sweep
+
+## User Story
+
+As a developer, I want stale worktrees to be automatically cleaned up when their story is promoted to archived, so that disk space doesn't silently fill up over time.
+
+## Acceptance Criteria
+
+- [ ] When sweep_done_to_archived moves a story to 6_archived, its worktree (if any) is removed via remove_worktree_sync
+- [ ] Worktrees for stories already in 6_archived at sweep time are also cleaned up (catches previously missed items)
+- [ ] Worktree removal failures are logged but do not block the story file move or other cleanup
+- [ ] Existing tests pass and new unit tests cover the worktree pruning logic
+
+## Out of Scope
+
+- TBD