feat(Metric): Label wrapper for metrics

src/shared/ui/Metric/Metric.stories.svelte

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+<script module>
+import { defineMeta } from '@storybook/addon-svelte-csf';
+import Metric from './Metric.svelte';
+
+const { Story } = defineMeta({
+    title: 'Shared/Metric',
+    component: Metric,
+    tags: ['autodocs'],
+    parameters: {
+        docs: {
+            description: {
+                component: 'Large technical value display with label below and optional unit.',
+            },
+            story: { inline: false },
+        },
+        layout: 'centered',
+    },
+    argTypes: {
+        value: {
+            control: 'text',
+            description: 'Metric value',
+            defaultValue: '42',
+        },
+        label: {
+            control: 'text',
+            description: 'Metric label',
+            defaultValue: 'Label',
+        },
+        unit: {
+            control: 'text',
+            description: 'Optional unit',
+        },
+        variant: {
+            control: 'select',
+            options: ['default', 'accent', 'muted', 'success', 'warning', 'error'],
+            description: 'Color variant',
+            defaultValue: 'accent',
+        },
+    },
+});
+</script>
+
+<Story
+    name="With unit"
+    args={{ value: 128, label: 'Font Size', unit: 'px', variant: 'accent' }}
+>
+    {#snippet template()}
+        <Metric value={128} label="Font Size" unit="px" variant="accent" />
+    {/snippet}
+</Story>
+
+<Story
+    name="Without unit"
+    args={{ value: 500, label: 'Weight', variant: 'accent' }}
+>
+    {#snippet template()}
+        <Metric value={500} label="Weight" variant="accent" />
+    {/snippet}
+</Story>
+
+<Story
+    name="Default variant"
+    args={{ value: 42, label: 'Value', variant: 'default' }}
+>
+    {#snippet template()}
+        <Metric value={42} label="Value" variant="default" />
+    {/snippet}
+</Story>
+
+<Story
+    name="Accent variant"
+    args={{ value: 128, label: 'Size', variant: 'accent' }}
+>
+    {#snippet template()}
+        <Metric value={128} label="Size" variant="accent" />
+    {/snippet}
+</Story>
+
+<Story
+    name="Muted variant"
+    args={{ value: 0, label: 'Spacing', variant: 'muted' }}
+>
+    {#snippet template()}
+        <Metric value={0} label="Spacing" variant="muted" />
+    {/snippet}
+</Story>
+
+<Story
+    name="Success variant"
+    args={{ value: 100, label: 'Score', variant: 'success' }}
+>
+    {#snippet template()}
+        <Metric value={100} label="Score" variant="success" />
+    {/snippet}
+</Story>
+
+<Story
+    name="Warning variant"
+    args={{ value: 3, label: 'Issues', variant: 'warning' }}
+>
+    {#snippet template()}
+        <Metric value={3} label="Issues" variant="warning" />
+    {/snippet}
+</Story>
+
+<Story
+    name="Error variant"
+    args={{ value: 1, label: 'Errors', variant: 'error' }}
+>
+    {#snippet template()}
+        <Metric value={1} label="Errors" variant="error" />
+    {/snippet}
+</Story>
+
+<Story name="All variants with unit">
+    {#snippet template()}
+        <div class="flex gap-6">
+            <Metric value={42} label="Default" unit="px" variant="default" />
+            <Metric value={42} label="Accent" unit="px" variant="accent" />
+            <Metric value={42} label="Muted" unit="px" variant="muted" />
+            <Metric value={42} label="Success" unit="px" variant="success" />
+            <Metric value={42} label="Warning" unit="px" variant="warning" />
+            <Metric value={42} label="Error" unit="px" variant="error" />
+        </div>
+    {/snippet}
+</Story>
+
+<Story name="All variants without unit">
+    {#snippet template()}
+        <div class="flex gap-6">
+            <Metric value={42} label="Default" variant="default" />
+            <Metric value={42} label="Accent" variant="accent" />
+            <Metric value={42} label="Muted" variant="muted" />
+            <Metric value={42} label="Success" variant="success" />
+            <Metric value={42} label="Warning" variant="warning" />
+            <Metric value={42} label="Error" variant="error" />
+        </div>
+    {/snippet}
+</Story>

src/shared/ui/Metric/Metric.svelte

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+<!--
+    Component: Metric
+    Large technical value display with label below and optional unit.
+-->
+<script lang="ts">
+import { cn } from '$shared/shadcn/utils/shadcn-utils';
+import { Label } from '$shared/ui';
+import {
+    type LabelVariant,
+    labelVariantConfig,
+} from '$shared/ui/Label/config';
+
+interface Props {
+    value: string | number;
+    label: string;
+    unit?: string;
+    variant?: LabelVariant;
+    class?: string;
+}
+
+let {
+    value,
+    label,
+    unit,
+    variant = 'accent',
+    class: className,
+}: Props = $props();
+</script>
+
+<div class={cn('flex flex-col gap-1', className)}>
+    <div class="flex items-baseline gap-1">
+        <span
+            class={cn(
+                "font-['Space_Mono'] text-2xl font-bold tabular-nums",
+                labelVariantConfig[variant],
+            )}
+        >
+            {value}
+        </span>
+
+        {#if unit}
+            <Label variant="muted" size="xs">{unit}</Label>
+        {/if}
+    </div>
+
+    <Label variant="muted" size="xs">{label}</Label>
+</div>