Sync from upstream llama.cpp repository

tools/server/webui/.storybook/preview.ts

@@ -0,0 +1,42 @@
+import type { Preview } from '@storybook/sveltekit';
+import '../src/app.css';
+import ModeWatcherDecorator from './ModeWatcherDecorator.svelte';
+import TooltipProviderDecorator from './TooltipProviderDecorator.svelte';
+
+const preview: Preview = {
+	parameters: {
+		controls: {
+			matchers: {
+				color: /(background|color)$/i,
+				date: /Date$/i
+			}
+		},
+
+		backgrounds: {
+			disable: true
+		},
+
+		a11y: {
+			// 'todo' - show a11y violations in the test UI only
+			// 'error' - fail CI on a11y violations
+			// 'off' - skip a11y checks entirely
+			test: 'todo'
+		}
+	},
+	decorators: [
+		(story) => ({
+			Component: ModeWatcherDecorator,
+			props: {
+				children: story
+			}
+		}),
+		(story) => ({
+			Component: TooltipProviderDecorator,
+			props: {
+				children: story
+			}
+		})
+	]
+};
+
+export default preview;