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/dropdown-menu.stories.tsx

@@ -17,7 +17,7 @@ import {
   DropdownMenuSubTrigger,
   DropdownMenuTrigger,
 } from "@hm-design/ui"
-import { STORY_KICKER, StoryPage, StoryPageHeader, StorySection } from "@/components/story-page"
+import { StoryPage, StoryPageHeader, StorySection } from "@/components/story-page"
 
 // Dropdown Menu is a Radix overlay (Portal), so the representative Story is a trigger that opens the real menu, the same way as
 // Dialog. The verification Story starts open. Radix owns keyboard navigation, focus return and Escape.
@@ -85,11 +85,9 @@ export const All: Story = {
   render: () => (
     <StoryPage>
       <StoryPageHeader
-        kicker={STORY_KICKER.components}
         title="Dropdown Menu"
-        description="버튼으로 여는 작업 메뉴입니다. 키보드 이동, Esc 닫기, 포커스 복귀는 Radix가 담당합니다."
       />
-      <StorySection title="Overview" description="항목 · Disabled · 구분선 · Checkbox · Radio Group · 하위 메뉴 · 위험 항목을 한 메뉴에서 확인합니다. 버튼을 눌러 엽니다.">
+      <StorySection title="Overview" description="항목 · Disabled · 구분선 · Checkbox · Radio · 하위 메뉴 · 위험 항목">
         <Full />
       </StorySection>
     </StoryPage>