refactor(ui): extract reusable component package

src/stories/ScanlineField.stories.tsx

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