style(storybook): narrow LNB to 180px and shorten menu labels

- Manager sidebar navSize / recentVisibleSizes 246px -> 180px
- Menu labels: 화면 너비 대응 -> 화면 너비 (SW Header / Viewer / Step Header / Footer),
  날짜 선택기 -> 날짜 선택, 여러 줄 입력창 -> 텍스트 영역
- Story IDs, hierarchy and order unchanged

.storybook/manager.js

@@ -41,7 +41,7 @@ const koreanLabels = {
   'components-feedback': '알림·피드백',
   'components-form-button': '버튼',
   'components-form-input': '입력창',
-  'components-form-textarea': '여러 줄 입력창',
+  'components-form-textarea': '텍스트 영역',
   'components-form-select': '선택 목록',
   'components-form-checkbox': '체크박스',
   'components-form-radio-group': '라디오 버튼',
@@ -78,7 +78,7 @@ const koreanLabels = {
   'components-search-date-command': '명령어 검색',
   'components-search-date-combobox': '콤보박스',
   'components-search-date-calendar': '달력',
-  'components-search-date-date-picker': '날짜 선택기',
+  'components-search-date-date-picker': '날짜 선택',
   'components-feedback-alert': '알림 메시지',
   'components-feedback-sonner': '토스트 알림',
   patterns: 'UI 패턴',
@@ -102,10 +102,10 @@ const koreanLabels = {
   sw: 'SW UI',
   'sw-header': '헤더',
   'sw-header--overview': 'SW 헤더',
-  'sw-header--responsive-more': '화면 너비 대응',
-  'sw-viewer--responsive': '화면 너비 대응',
-  'sw-step-header--responsive': '화면 너비 대응',
-  'sw-footer--responsive': '화면 너비 대응',
+  'sw-header--responsive-more': '화면 너비',
+  'sw-viewer--responsive': '화면 너비',
+  'sw-step-header--responsive': '화면 너비',
+  'sw-footer--responsive': '화면 너비',
   'sw-viewer': '뷰어',
   'sw-viewer--viewer-header': '뷰어 헤더',
   'sw-step-header': '단계별',
@@ -124,9 +124,10 @@ addons.setConfig({
   layout: {
     showPanel: false,
     showToolbar: false,
-    // LNB width 246px. recentVisibleSizes keeps the same width when the sidebar is collapsed and expanded again.
-    navSize: 246,
-    recentVisibleSizes: { navSize: 246 },
+    // LNB width 180px (2026-11-12, was 246px). recentVisibleSizes keeps the same width when the sidebar is collapsed and expanded again.
+    // Storybook snaps a manual drag below 240px back to 240px; the initial and re-expanded width stays 180px.
+    navSize: 180,
+    recentVisibleSizes: { navSize: 180 },
   },
   theme: create({
     base: 'light',