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/navigation-menu.stories.tsx

@@ -10,7 +10,7 @@ import {
   NavigationMenuTrigger,
 } 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"
 
 // Navigation Menu is for destinations (links), not commands. The representative Story opens the real menus with hover, click or
 // keyboard; the same specimens also exist as Stories tagged `verification` (hidden from the sidebar). Title + description children
@@ -102,9 +102,8 @@ export const All: Story = {
   render: () => (
     <StoryPage>
       <StoryPageHeader
-        kicker={STORY_KICKER.components}
         title="Navigation Menu"
-        description="목적지(링크)로 이동하는 메뉴입니다. 명령 실행에는 쓰지 않습니다. hover, 클릭 또는 키보드로 엽니다."
+        description="링크 이동용 · 명령 실행에는 쓰지 않음"
       />
       <StorySection title="Overview">
         <StateBoard