refactor(ui): extract reusable component package

src/stories/DiagonalStripeField.stories.tsx

@@ -0,0 +1,16 @@
+import type { Meta, StoryObj } from "@storybook/react-vite";
+import { DiagonalStripeField } from "../components/DiagonalStripeField";
+
+const meta = {
+  title: "UI/DiagonalStripeField",
+  component: DiagonalStripeField,
+  args: {
+    tone: "accent",
+    density: "regular",
+  },
+} satisfies Meta<typeof DiagonalStripeField>;
+
+export default meta;
+type Story = StoryObj<typeof meta>;
+
+export const Default: Story = {};