T03 layout: stacks, grids, surfaces, scroll, splits, sheets, dock, panes, workspace, viewport

tasks/ch01-10.md

@@ -68,47 +68,47 @@
 
 ## T03 Layout — `src/layout`
 
-- [ ] Stack / HStack / VStack
-- [ ] Flex — native `.flex()`
-- [ ] Grid / GridItem — native `.grid()`, `.col_span()`
-- [ ] SimpleGrid
-- [ ] Masonry
-- [ ] Center — native `.flex().items_center().justify_center()`
-- [ ] Container
-- [ ] AspectRatio
-- [ ] Inset / Padding — native `.p_*()`
-- [ ] Wrap — native `.flex_wrap()`
-- [ ] Absolute / Positioned — native `.absolute()`
-- [ ] Layer / ZStack
-- [ ] ScrollArea
-- [ ] Scrollbar
-- [ ] ScrollShadow
-- [ ] ScrollToTop
-- [ ] StickyHeader
-- [ ] SplitPane — horizontal, vertical, nested
-- [ ] ResizablePanel / ResizablePanelGroup → `layout::SplitPane`
-- [ ] ResizeHandle
-- [ ] Collapsible
-- [ ] Accordion / AccordionItem
-- [ ] Card / CardHeader / CardBody / CardFooter
-- [ ] Panel / PanelHeader
-- [ ] Section / SectionHeader
-- [ ] Group / Fieldset
-- [ ] Frame
-- [ ] Well
-- [ ] Sidebar
-- [ ] Drawer
-- [ ] Sheet
-- [ ] Page / PageHeader / PageContent
-- [ ] AppShell
-- [ ] MasterDetail
-- [ ] ThreeColumnLayout → `layout::SplitPane`
-- [ ] Dock / DockPanel
-- [ ] DockZone / DropIndicator
-- [ ] FloatingPanel
-- [ ] Pane / PaneGroup
-- [ ] Workspace — versioned layout snapshot
-- [ ] Viewport
+- [x] Stack / HStack / VStack
+- [x] Flex — native `.flex()`
+- [x] Grid / GridItem — native `.grid()`, `.col_span()`
+- [x] SimpleGrid
+- [x] Masonry
+- [x] Center — native `.flex().items_center().justify_center()`
+- [x] Container
+- [x] AspectRatio
+- [x] Inset / Padding — native `.p_*()`
+- [x] Wrap — native `.flex_wrap()`
+- [x] Absolute / Positioned — native `.absolute()`
+- [x] Layer / ZStack
+- [x] ScrollArea
+- [x] Scrollbar
+- [x] ScrollShadow
+- [x] ScrollToTop
+- [x] StickyHeader
+- [x] SplitPane — horizontal, vertical, nested
+- [x] ResizablePanel / ResizablePanelGroup → `layout::SplitPane`
+- [x] ResizeHandle
+- [x] Collapsible
+- [x] Accordion / AccordionItem
+- [x] Card / CardHeader / CardBody / CardFooter
+- [x] Panel / PanelHeader
+- [x] Section / SectionHeader
+- [x] Group / Fieldset
+- [x] Frame
+- [x] Well
+- [x] Sidebar
+- [x] Drawer
+- [x] Sheet
+- [x] Page / PageHeader / PageContent
+- [x] AppShell
+- [x] MasterDetail
+- [x] ThreeColumnLayout → `layout::SplitPane`
+- [x] Dock / DockPanel
+- [x] DockZone / DropIndicator
+- [x] FloatingPanel
+- [x] Pane / PaneGroup
+- [x] Workspace — versioned layout snapshot
+- [x] Viewport
 
 ## T04 Window & Shell — `src/shell`