T12b Data Display: DescriptionList, PropertyGrid, Timeline, ActivityFeed, Changelog (review pending: codex 401)

tasks/ch11-20.md

@@ -61,13 +61,13 @@
 
 ## T12b Data Display · Records
 
-- [ ] DescriptionList
-- [ ] PropertyGrid
-- [ ] KeyValueList → `data_display::DescriptionList`
-- [ ] InfoRow → `data_display::DescriptionList`
-- [ ] Timeline / TimelineItem
-- [ ] ActivityFeed
-- [ ] Changelog
+- [x] DescriptionList → `data_display::DescriptionList`
+- [x] PropertyGrid → `data_display::PropertyGrid`, `PropertyGroup`
+- [x] KeyValueList → `data_display::DescriptionList`
+- [x] InfoRow → `data_display::DescriptionList`
+- [x] Timeline / TimelineItem → `data_display::Timeline`, `TimelineItem`
+- [x] ActivityFeed → `data_display::ActivityFeed`, `Activity`
+- [x] Changelog → `data_display::Changelog`, `Release`, `Change`
 
 ## T12c Data Display · Media & measures