chore: import upstream snapshot with attribution

2026-07-13 12:29:49 +08:00
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+# Native SDK gpu-components example
+
+This example is a retained GPU widget lab for trying the finished native-first component surface:
+
+- Native toolbar shell view with native-sdk-rendered sidebar, status strip, and GPU component surface.
+- Buttons, icon buttons, text, icons, fields, checkbox, toggle, slider, progress, segmented control, lists, scroll views, popovers, menus, tooltips, and data grids.
+- Built-in component catalog in the house style: Accordion, Alert, Avatar, Badge, Breadcrumb, Bubble, Button, Button Group, Card, Checkbox, Combobox, Dialog, Drawer, Dropdown Menu, Input, Pagination, Progress, Radio Group, Resizable, Select, Separator, Sheet, Skeleton, Slider, Spinner, Switch, Table, Tabs, Textarea, Toggle, Toggle Group, and Tooltip.
+- Retained widget semantics for focus, press, toggle, select, text editing, scrolling, and data-grid roles.
+- Token-driven rounded corners, shadows, blur, typography, color, and scroll physics.
+
+Run with the macOS system backend. The GPU component lab defaults to `ReleaseFast`; pass `-Doptimize=Debug` only when debugging renderer internals.
+
+```sh
+native dev
+```
+
+Run the headless canvas and scene tests:
+
+```sh
+native test -Dplatform=null
+```