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/textarea.stories.tsx

@@ -2,7 +2,7 @@ import { useId, type ComponentProps, type ReactNode } from "react"
 import type { Meta, StoryObj } from "@storybook/react-vite"
 import { Textarea } 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 Input: one representative "Textarea" Story shows every state on one page; the same specimens
 // also exist as separate Stories tagged `verification`, hidden from the sidebar by default (see .storybook/main.ts).
@@ -87,14 +87,13 @@ export const All: Story = {
   render: () => (
     <StoryPage>
       <StoryPageHeader
-        kicker={STORY_KICKER.components}
         title="Textarea"
-        description="여러 줄 텍스트를 입력하는 컨트롤입니다. 최소 높이 112px, resize 기본 vertical이며 size 체계는 없습니다. Label·Helper·Error 문구는 소비 조합입니다."
+        description="최소 높이 112px · resize vertical · size 없음 · Label·Helper·Error는 소비 조합"
       />
       <StorySection title="Overview">
         <StateBoard states={[{ id: "default", label: "Default", children: <Specimen placeholder={placeholder} /> }]} />
       </StorySection>
-      <StorySection title="States" description="Focus는 1.5px 테두리로 구분하며 shadow·glow를 쓰지 않습니다. Hover는 Default와 같습니다.">
+      <StorySection title="States" description="Focus 1.5px 테두리(shadow 없음) · Hover = Default">
         <StateBoard
           states={[
             { id: "hover", label: "Hover (= Default)", note: hoverNote, noteAfter: true, children: <Specimen defaultValue="Hover over this field" /> },
@@ -104,7 +103,7 @@ export const All: Story = {
           ]}
         />
       </StorySection>
-      <StorySection title="Validation" description="aria-invalid로 Error 테두리를 표시하고, 오류 문구는 소비 조합으로 연결합니다.">
+      <StorySection title="Validation" description="aria-invalid → Error 테두리 · 오류 문구는 소비 조합">
         <StateBoard
           states={[
             { id: "error", label: "Error", children: <Specimen error defaultValue="Invalid value" /> },
@@ -112,7 +111,7 @@ export const All: Story = {
           ]}
         />
       </StorySection>
-      <StorySection title="Usage" description="줄바꿈 유지와 resize 해제입니다.">
+      <StorySection title="Usage">
         <StateBoard
           states={[
             { id: "multiline", label: "Multiline · Wrap", children: <Specimen defaultValue={multiline} /> },