feat(shared/ui): add Badge component with brutalist variants and Storybook story

src/shared/ui/Badge/Badge.stories.svelte

@@ -0,0 +1,55 @@
+<script module>
+import { defineMeta } from '@storybook/addon-svelte-csf';
+import Badge from './Badge.svelte';
+
+const { Story } = defineMeta({
+    title: 'Shared/Badge',
+    component: Badge,
+    tags: ['autodocs'],
+    parameters: {
+        layout: 'centered',
+        docs: { description: { component: 'Brutalist inline label. Uppercase, 3px border, zero radius.' } },
+    },
+    argTypes: {
+        variant: {
+            control: 'select',
+            options: ['default', 'primary', 'secondary', 'outline'],
+        },
+    },
+});
+</script>
+
+<Story name="Default">
+    {#snippet template(args)}
+        <Badge {...args}>Tag</Badge>
+    {/snippet}
+</Story>
+
+<Story name="Primary" args={{ variant: 'primary' }}>
+    {#snippet template(args)}
+        <Badge {...args}>Primary</Badge>
+    {/snippet}
+</Story>
+
+<Story name="Secondary" args={{ variant: 'secondary' }}>
+    {#snippet template(args)}
+        <Badge {...args}>Secondary</Badge>
+    {/snippet}
+</Story>
+
+<Story name="Outline" args={{ variant: 'outline' }}>
+    {#snippet template(args)}
+        <Badge {...args}>Outline</Badge>
+    {/snippet}
+</Story>
+
+<Story name="All variants">
+    {#snippet template()}
+        <div class="flex gap-3 flex-wrap">
+            <Badge variant="default">Default</Badge>
+            <Badge variant="primary">Primary</Badge>
+            <Badge variant="secondary">Secondary</Badge>
+            <Badge variant="outline">Outline</Badge>
+        </div>
+    {/snippet}
+</Story>

src/shared/ui/Badge/Badge.svelte

@@ -0,0 +1,37 @@
+<!--
+    Component: Badge
+    Inline label for tags and status indicators. Brutalist border, uppercase, no radius.
+-->
+<script lang="ts">
+import { cn } from '$shared/lib/cn';
+import type { Snippet } from 'svelte';
+import type { BadgeVariant } from './types';
+
+interface Props {
+    /** Visual style variant @default 'default' */
+    variant?: BadgeVariant;
+    children?: Snippet;
+    class?: string;
+}
+
+let { variant = 'default', children, class: className }: Props = $props();
+
+const variantStyles: Record<BadgeVariant, string> = {
+    default:   'brutal-border bg-carbon-black text-ochre-clay',
+    primary:   'brutal-border bg-burnt-oxide text-ochre-clay',
+    secondary: 'brutal-border bg-slate-indigo text-ochre-clay',
+    outline:   'brutal-border bg-transparent text-carbon-black',
+};
+
+const classes = $derived(cn(
+    'inline-block px-3 py-1 text-xs uppercase tracking-wider',
+    variantStyles[variant],
+    className,
+));
+</script>
+
+<span class={classes}>
+    {#if children}
+        {@render children()}
+    {/if}
+</span>

src/shared/ui/Badge/Badge.test.ts

@@ -0,0 +1,20 @@
+import { render } from '@testing-library/svelte';
+import { describe, expect, it } from 'vitest';
+import Badge from './Badge.svelte';
+
+describe('Badge', () => {
+    it('renders children text', () => {
+        const { getByText } = render(Badge, { props: { children: 'hello' } });
+        expect(getByText('hello')).toBeTruthy();
+    });
+
+    it('applies default variant class', () => {
+        const { container } = render(Badge, { props: { variant: 'default' } });
+        expect(container.querySelector('span')?.className).toContain('bg-carbon-black');
+    });
+
+    it('applies primary variant class', () => {
+        const { container } = render(Badge, { props: { variant: 'primary' } });
+        expect(container.querySelector('span')?.className).toContain('bg-burnt-oxide');
+    });
+});

src/shared/ui/Badge/index.ts

@@ -0,0 +1,2 @@
+export { default as Badge } from './Badge.svelte';
+export type { BadgeVariant } from './types';

src/shared/ui/Badge/types.ts

@@ -0,0 +1 @@
+export type BadgeVariant = 'default' | 'primary' | 'secondary' | 'outline';