feat: add missing storybook files and type template arguments properly

src/shared/ui/Button/ButtonGroup.stories.svelte

@@ -27,10 +27,11 @@ const { Story } = defineMeta({
 
 <script lang="ts">
 import { Button } from '$shared/ui/Button';
+import type { ComponentProps } from 'svelte';
 </script>
 
 <Story name="Default">
-    {#snippet template(args)}
+    {#snippet template(args: ComponentProps<typeof ButtonGroup>)}
         <ButtonGroup {...args}>
             <Button variant="tertiary">Option 1</Button>
             <Button variant="tertiary">Option 2</Button>
@@ -40,7 +41,7 @@ import { Button } from '$shared/ui/Button';
 </Story>
 
 <Story name="Horizontal">
-    {#snippet template(args)}
+    {#snippet template(args: ComponentProps<typeof ButtonGroup>)}
         <ButtonGroup {...args}>
             <Button variant="tertiary">Day</Button>
             <Button variant="tertiary" active>Week</Button>
@@ -51,7 +52,7 @@ import { Button } from '$shared/ui/Button';
 </Story>
 
 <Story name="Vertical">
-    {#snippet template(args)}
+    {#snippet template(args: ComponentProps<typeof ButtonGroup>)}
         <ButtonGroup {...args} class="flex-col">
             <Button variant="tertiary">Top</Button>
             <Button variant="tertiary" active>Middle</Button>
@@ -61,7 +62,7 @@ import { Button } from '$shared/ui/Button';
 </Story>
 
 <Story name="With Icons">
-    {#snippet template(args)}
+    {#snippet template(args: ComponentProps<typeof ButtonGroup>)}
         <ButtonGroup {...args}>
             <Button variant="tertiary">Grid</Button>
             <Button variant="tertiary" active>List</Button>
@@ -78,7 +79,7 @@ import { Button } from '$shared/ui/Button';
         },
     }}
 >
-    {#snippet template(args)}
+    {#snippet template(args: ComponentProps<typeof ButtonGroup>)}
         <div class="p-8 bg-background text-foreground">
             <h3 class="mb-4 text-sm font-medium">Dark Mode</h3>
             <ButtonGroup {...args}>