style(storybook): localize 조직도 and 노선도 menus, Department Colors 3 columns

- OrgChart -> 조직도 and sub menus (개요, 부서별 색상, 전체 구성, 확장 조직도); Story IDs kept
- 노선도 menu/page titles in Korean (제목, 정보, 노선·공간, 시설물)
- Department Colors cards 3 columns (2 under 960px)

src/center/center-spatial.stories.tsx

@@ -7,7 +7,7 @@ import { withRepresentation } from "./center-shared"
 // Owners: ui-viz docs/visualization/route.md, spatial-map.md, spatial-section.md, composition.md.
 // Route layer order Shadow -> Outline -> Primary Stroke is CONFIRMED; the whole-map layer order is Candidate and line join is TBD.
 const meta = {
-  title: "노선도/Spatial",
+  title: "노선도/노선·공간",
   id: "center-graphic-spatial",
   component: RouteLine,
   parameters: { layout: "fullscreen", controls: { disable: true } },
@@ -17,11 +17,11 @@ type Story = StoryObj<typeof meta>
 
 // Common Story page. The CENTER representation wraps only the specimen, so the page title is never scaled with the graphic.
 export const Spatial: Story = {
-  name: "Spatial",
+  name: "노선·공간",
   render: () => (
     <StoryPage className="sb-center-spatial-page">
-      <StoryPageHeader title="Spatial" />
-      <StorySection title="Overview">
+      <StoryPageHeader title="노선·공간" />
+      <StorySection title="개요">
         {withRepresentation(() => <CenterSpatialInformationReferenceDemo />)}
       </StorySection>
     </StoryPage>