Add Storybook stories for the new brewery detail page components

web/frontend/stories/BeerStyleBreakdownCard.stories.tsx

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+import type { Meta, StoryObj } from '@storybook/react-vite';
+import { expect, within } from 'storybook/test';
+import BeerStyleBreakdownCard from '../app/features/breweries/components/BeerStyleBreakdownCard';
+import { FILLER_BEERS } from '../app/features/breweries/utils/filler-brewery-detail';
+
+const beerStyleBreakdownCardDescription = `Sidebar "Beer styles" card: per-style progress bars, sorted by count descending, derived client-side from a brewery's beer list.`;
+
+const meta = {
+    title: 'Breweries/BeerStyleBreakdownCard',
+    component: BeerStyleBreakdownCard,
+    tags: ['autodocs'],
+    args: {
+        beers: FILLER_BEERS,
+    },
+    parameters: {
+        layout: 'padded',
+        docs: {
+            description: {
+                component: beerStyleBreakdownCardDescription,
+            },
+        },
+    },
+} satisfies Meta<typeof BeerStyleBreakdownCard>;
+
+export default meta;
+type Story = StoryObj<typeof meta>;
+
+export const Default: Story = {
+    play: async ({ canvasElement }) => {
+        const canvas = within(canvasElement);
+        await expect(canvas.getByText('Beer styles')).toBeInTheDocument();
+        await expect(canvas.getByText('IPA')).toBeInTheDocument();
+        await expect(canvas.getByText('Sour')).toBeInTheDocument();
+    },
+};
+
+export const SingleStyle: Story = {
+    args: {
+        beers: FILLER_BEERS.filter((beer) => beer.style === 'IPA'),
+    },
+    play: async ({ canvasElement }) => {
+        const canvas = within(canvasElement);
+        await expect(canvas.getByText('IPA')).toBeInTheDocument();
+        await expect(canvas.queryByText('Sour')).not.toBeInTheDocument();
+    },
+};