Recommend Prune Three cleanup categories 1. Retire : section with <2 posts added in 3 months AND no new cluster signal → candidate for retirement. 2. Merge : two sections whose promises overlap 60% semantically OR whose post-sets have 40% cross-fit → merge candidate. 3. Reassign : posts from flagged as genuine-drift → suggest target section or move to . Workflow Guardrails 1. Never delete. Only retire (mark status: retired, keep in map). 2. Never merge without the merge proposal fully visible in review artifact (both original promises preserved verbatim). 3. Never recommend pruning a provisio…