Code-quality reviewer flagged stylistic divergence from auth's pattern: - All 3 blog use cases now have // ── Input ──... / ── Output ──... / ── Use case ──... section dividers (consistent with auth Task 3 + plan template §4.1). - Removed inline comment in get-articles controller's presenter that appeared in only 1 of 3 controllers; identity presenters are self-explanatory.