initial: mirror of @fn_library from fn_registry

75 components + DESIGN_SYSTEM.md + sync script.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

components/select.tsx

@@ -0,0 +1,10 @@
+import { Select as MantineSelect, type SelectProps as MantineSelectProps } from '@mantine/core'
+
+interface SelectProps extends MantineSelectProps {}
+
+function Select(props: SelectProps) {
+  return <MantineSelect {...props} />
+}
+
+export { Select }
+export type { SelectProps }