refactor(storybook): simplify component and preview examples

Drop page / section descriptions, state notes and repeated captions from
the representative Stories of 44 components, the Patterns, Center
Graphic and OrgChart pages. Value readouts, spec lists and captions hide
only on the representative page; hidden verification Stories keep them.
Tabs Default API and the Filter Bar draft / applied counts move to the
hidden DefaultApi and DraftApplied Stories; Center Overview is hidden
with its direct URL kept. Story IDs are unchanged.

Align the component, pattern and OrgChart docs with the pages, point the
quality reference check at the DraftApplied Story, and make the P8
styles check expect no section header on the preview-only Expanded page.

docs/components/toggle-group.md

@@ -72,7 +72,7 @@ Radix 구조·ARIA·roving focus(방향키, Home/End, disabled 건너뜀, `loop`
 
 ## 9. Storybook
 
-- 대표 Story `All`("Toggle Group"): Single(local state, 값 표시), Multiple(icon-only, local state), Disabled group / item, Vertical(icon-only), `spacing={2}`, Many items(`spacing={1}` + `flex-wrap`)을 한 페이지에 둔다.
+- 대표 Story `All`("Toggle Group"): Single(local state), Multiple(icon-only, local state), Disabled group / item, Vertical(icon-only), `spacing={2}`, Many items(`spacing={1}` + `flex-wrap`)을 한 페이지에 둔다. 대표 화면은 예시 제목·선택값 표시(`value = …`)를 생략하고 구역 제목으로 구분한다. 값 표시는 verification에 남긴다.
 - verification: `Single`, `Multiple`, `Vertical`.
 - meta에 `component`를 지정하지 않는다(props가 `single | multiple` union이라 args 없는 Story가 타입을 통과하지 못함).