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/combobox.md

@@ -102,7 +102,7 @@ Popover: Portal, collision, Escape, 바깥 클릭 닫힘, trigger focus 복귀.
 
 ## 10. Storybook
 
-- 대표 Story `All`("Combobox"): Empty placeholder + search(Remix는 disabled option), Selected(controlled, 값 표시), Medium, Long option, Disabled를 한 페이지에 둔다. Label은 Story 조합이다.
+- 대표 Story `All`("Combobox"): Overview(Placeholder + search, Remix는 disabled option), Sizes(Medium, 같은 size의 Select / Combobox 비교), States(Selected(controlled), Disabled), Usage(Long option). Label은 Story 조합이다. 대표 화면은 선택값 표시(`value = …`)를 숨기며 숨김 `Controlled`는 유지한다.
 - verification: `Empty`, `Controlled`, `Long Option`.
 
 ## 11. 사용자 확정 결정 / 보류