docs(storybook): simplify sidebar Story pages around the UI

Drop the category kicker from the 83 sidebar Stories (kicker is now optional;
hidden verification Stories keep it) and shorten or remove repeated, obvious
or internal page/section descriptions. Required specs, limits, virtual-data
and undecided-value notices stay. Story IDs, exports, fixtures, shared state
notes and package code are unchanged. Record: docs/reports/storybook-ui-simplification-2026-10-22.md

src/components/skeleton.stories.tsx

@@ -1,7 +1,7 @@
 import type { Meta, StoryObj } from "@storybook/react-vite"
 import { Card, CardContent, CardHeader, Skeleton } from "@hm-design/ui"
 import { StateBoard } from "@/components/story-board"
-import { STORY_KICKER, StoryPage, StoryPageHeader, StorySection } from "@/components/story-page"
+import { StoryPage, StoryPageHeader, StorySection } from "@/components/story-page"
 
 // Skeleton is a visual placeholder; size and shape come from `className` (layout classes here are Story composition).
 // There is no data fetching. The representative Story shows text lines, an avatar, and a card / list loading composition.
@@ -64,12 +64,11 @@ export const All: Story = {
   render: () => (
     <StoryPage>
       <StoryPageHeader
-        kicker={STORY_KICKER.components}
         title="Skeleton"
-        description="콘텐츠를 불러오는 동안 자리를 표시하는 placeholder입니다. 크기와 모양은 className으로 정합니다."
+        description="크기·모양은 className으로 지정"
       />
       <StorySection title="Overview">{board("text")}</StorySection>
-      <StorySection title="Usage" description="Avatar 행과 카드·목록 로딩 조합입니다.">{board("avatar", "card")}</StorySection>
+      <StorySection title="Usage">{board("avatar", "card")}</StorySection>
     </StoryPage>
   ),
 }