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/card.stories.tsx

@@ -4,7 +4,7 @@ import { Button } from "@hm-design/ui"
 import { Card, CardAction, CardContent, CardDescription, CardFooter, CardHeader, CardTitle, type CardSurface } from "@hm-design/ui"
 import { Input } 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"
 
 // Story structure follows Button / Input / Select: one representative "Card" Story shows the ui_viz cases on one page,
 // the same specimens also exist as separate Stories tagged `verification` (hidden from the sidebar, see .storybook/main.ts).
@@ -71,14 +71,13 @@ export const All: Story = {
   render: () => (
     <StoryPage>
       <StoryPageHeader
-        kicker={STORY_KICKER.components}
         title="Card"
-        description="제목과 본문을 하나의 면으로 묶는 콘텐츠 컨테이너입니다(ui_viz Content Card). Default 상태만 정의되어 있습니다."
+        description="Default 상태만 정의"
       />
-      <StorySection title="Overview" description="surface를 생략한 기본 Card(White)입니다.">
+      <StorySection title="Overview" description="기본값: White">
         <StateBoard min={360} states={[{ id: "surface", label: "Surface · White (기본)", children: <Specimen /> }]} />
       </StorySection>
-      <StorySection title="Variants" description="surface: content(Beige)와 제목 옆 Action입니다.">
+      <StorySection title="Variants" description="content(Beige) · 제목 옆 Action">
         <StateBoard
           min={360}
           states={[