[changelog] Clarify agent follow-up guard entry (#147)

Author: coisa

CHANGELOG.md

@@ -13,7 +13,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Changed
 
-- Teach the pull-request review skill to treat workflow-managed wiki pointer updates as expected state before flagging drift (#147)
+- Teach the review and pull-request agent skills to treat workflow-managed wiki pointer updates as expected state and to prefer fresh follow-up issues plus PRs over reviving closed deleted branches (#147)
 - Require GitHub issue write readback verification in the github-issues skill (#165)
 - Standardize cache flags and nested cache-dir propagation across cache-aware commands (#162)