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/file_input.tsx

@@ -0,0 +1,10 @@
+import { FileInput as MantineFileInput, type FileInputProps as MantineFileInputProps } from '@mantine/core'
+
+interface FileInputProps extends MantineFileInputProps {}
+
+function FileInput(props: FileInputProps) {
+  return <MantineFileInput {...props} />
+}
+
+export { FileInput }
+export type { FileInputProps }