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/alert-dialog.stories.tsx

@@ -11,7 +11,7 @@ import {
   AlertDialogTrigger,
   Button,
 } from "@hm-design/ui"
-import { STORY_KICKER, StoryPage, StoryPageHeader, StorySection } from "@/components/story-page"
+import { StoryPage, StoryPageHeader, StorySection } from "@/components/story-page"
 
 // Alert Dialog is a modal Radix overlay (Portal) for a decision that must be confirmed or cancelled: no Close (X), no outside
 // dismiss. The representative Story opens the real dialogs; the same cases start open in the verification Stories.
@@ -74,14 +74,13 @@ export const All: Story = {
   render: () => (
     <StoryPage>
       <StoryPageHeader
-        kicker={STORY_KICKER.components}
         title="Alert Dialog"
-        description="반드시 확인하거나 취소해야 하는 결정을 묻는 모달입니다. 닫기(X)와 바깥 클릭 닫기가 없습니다."
+        description="닫기(X)·바깥 클릭 닫기 없음"
       />
-      <StorySection title="Overview" description="일반 확인창은 같은 크기의 Solid 버튼 세트입니다. 버튼을 눌러 엽니다.">
+      <StorySection title="Overview" description="같은 크기 Solid 버튼 세트">
         <Confirmation />
       </StorySection>
-      <StorySection title="Variants" description="삭제 확인창은 취소와 삭제 모두 같은 크기의 Standard Solid 세트입니다.">
+      <StorySection title="Variants" description="취소·삭제 같은 크기 Standard Solid">
         <Destructive />
       </StorySection>
     </StoryPage>