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/scroll-area.stories.tsx

@@ -2,7 +2,7 @@ import type { ReactNode } from "react"
 import type { Meta, StoryObj } from "@storybook/react-vite"
 import { ScrollArea, ScrollBar } 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"
 
 // Scroll Area is Radix scrolling with a styled scrollbar (type "hover": the bar shows while hovering or scrolling). Sizes below
 // are Story layout. The representative Story shows vertical, horizontal, both axes and a table-like content.
@@ -88,12 +88,11 @@ export const All: Story = {
   render: () => (
     <StoryPage>
       <StoryPageHeader
-        kicker={STORY_KICKER.components}
         title="Scroll Area"
-        description="정해진 크기 안에서 내용을 스크롤하는 영역입니다. 스크롤바는 포인터를 올리거나 스크롤할 때 나타납니다."
+        description="스크롤바는 hover·스크롤 시 표시"
       />
       <StorySection title="Overview">{board("vertical")}</StorySection>
-      <StorySection title="Variants" description="가로와 양방향 스크롤입니다.">{board("horizontal", "both")}</StorySection>
+      <StorySection title="Variants">{board("horizontal", "both")}</StorySection>
       <StorySection title="Usage">{board("table-like")}</StorySection>
     </StoryPage>
   ),