feat: add missing storybook files and type template arguments properly

src/entities/Breadcrumb/ui/NavigationWrapper/NavigationWrapper.stories.svelte

@@ -0,0 +1,109 @@
+<script module>
+import { defineMeta } from '@storybook/addon-svelte-csf';
+import NavigationWrapper from './NavigationWrapper.svelte';
+
+const { Story } = defineMeta({
+    title: 'Entities/NavigationWrapper',
+    component: NavigationWrapper,
+    tags: ['autodocs'],
+    parameters: {
+        docs: {
+            description: {
+                component:
+                    'Thin wrapper that registers an HTML section with `scrollBreadcrumbsStore` via a Svelte use-directive action. Has no visual output of its own — renders `{@render content(registerBreadcrumb)}` where `registerBreadcrumb` is the action to attach with `use:`. On destroy the section is automatically removed from the store.',
+            },
+            story: { inline: false },
+        },
+        layout: 'fullscreen',
+    },
+    argTypes: {
+        index: {
+            control: { type: 'number', min: 0 },
+            description: 'Unique index used for ordering in the breadcrumb trail',
+        },
+        title: {
+            control: 'text',
+            description: 'Display title shown in the breadcrumb header',
+        },
+        offset: {
+            control: { type: 'number', min: 0 },
+            description: 'Scroll offset in pixels to account for sticky headers',
+        },
+    },
+});
+</script>
+
+<script lang="ts">
+import type { ComponentProps } from 'svelte';
+</script>
+
+<Story
+    name="Single Section"
+    args={{ index: 0, title: 'Introduction', offset: 96 }}
+    parameters={{
+        docs: {
+            description: {
+                story:
+                    'A single section registered with NavigationWrapper. The `content` snippet receives the `register` action and applies it via `use:register`.',
+            },
+        },
+    }}
+>
+    {#snippet template(args: ComponentProps<typeof NavigationWrapper>)}
+        <NavigationWrapper {...args}>
+            {#snippet content(register)}
+                <section use:register style="padding: 2rem; background: #f5f5f5; min-height: 200px;">
+                    <p style="font-size: 0.875rem; color: #555;">
+                        Section registered as <strong>{args.title}</strong> at index {args.index}. Scroll past this
+                        section to see it appear in the breadcrumb header.
+                    </p>
+                </section>
+            {/snippet}
+        </NavigationWrapper>
+    {/snippet}
+</Story>
+
+<Story
+    name="Multiple Sections"
+    parameters={{
+        docs: {
+            description: {
+                story:
+                    'Three sequential sections each wrapped in NavigationWrapper with distinct indices and titles. Demonstrates how the breadcrumb trail builds as the user scrolls.',
+            },
+        },
+    }}
+>
+    {#snippet template()}
+        <div style="display: flex; flex-direction: column; gap: 0;">
+            <NavigationWrapper index={0} title="Introduction" offset={96}>
+                {#snippet content(register)}
+                    <section use:register style="padding: 2rem; background: #f5f5f5; min-height: 300px;">
+                        <h2 style="margin: 0 0 0.5rem;">Introduction</h2>
+                        <p style="font-size: 0.875rem; color: #555;">
+                            Registered as section 0. Scroll down to build the breadcrumb trail.
+                        </p>
+                    </section>
+                {/snippet}
+            </NavigationWrapper>
+
+            <NavigationWrapper index={1} title="Typography" offset={96}>
+                {#snippet content(register)}
+                    <section use:register style="padding: 2rem; background: #ebebeb; min-height: 300px;">
+                        <h2 style="margin: 0 0 0.5rem;">Typography</h2>
+                        <p style="font-size: 0.875rem; color: #555;">Registered as section 1.</p>
+                    </section>
+                {/snippet}
+            </NavigationWrapper>
+
+            <NavigationWrapper index={2} title="Spacing" offset={96}>
+                {#snippet content(register)}
+                    <section use:register style="padding: 2rem; background: #e0e0e0; min-height: 300px;">
+                        <h2 style="margin: 0 0 0.5rem;">Spacing</h2>
+                        <p style="font-size: 0.875rem; color: #555;">Registered as section 2.</p>
+                    </section>
+                {/snippet}
+            </NavigationWrapper>
+        </div>
+    {/snippet}
+</Story>