fix: update masonry grid sizing logic and notebook list padding

_bmad-output/implementation-artifacts/sprint-status.yaml

@@ -261,12 +261,12 @@ development_status:
 
   # Epic 8: Bug Fixes - UI Reactivity & State Management
   epic-8: in-progress
-  8-1-fix-ui-reactivity-bug: review
+  8-1-fix-ui-reactivity-bug: done
   epic-8-retrospective: optional
 
   # Epic 9: Feature Requests - Favorites & Recent Notes
   epic-9: in-progress
-  9-1-add-favorites-section: review
+  9-1-add-favorites-section: done
   9-2-add-recent-notes-section: review
   epic-9-retrospective: optional