docs(storybook): make Expanded OrgChart a preview-only page

Remove the data, layout, interaction and employee-popup setting panels
from the Expanded OrgChart Story. The chart now renders a fixed sample
(7 companies x 20, TB, all expanded, collapse/zoom/pan on, Drag & Drop
off, HM Dialog) right under the page title. Story ID, OrgChart packages
and public API are unchanged.

Align the Story browser checks (P7, P8, P9, P9.2-P9.5, geometry, popup
parity, hierarchy, HM Story) with the preview: setting-only scenarios
are removed, chart rendering, collapse, Zoom/Pan/Fit and HM Dialog checks
run on the fixed state. Move/Drag & Drop coverage stays in the Vanilla
Core checks (verify-p9-3-core, verify-p9-4-core).

Verified: tsc, test:guard 94/94, node --check on 11 scripts, changed
browser sections PASS. Pre-existing P7 story-menu, P8 Department
long-name, P9 Expanded tb/runner failures remain separate issues.
verify-p9-5-popup-parity was not run (needs the Vanilla example server).

examples/org-chart/verify-p9-5-popup-parity.mjs

@@ -30,10 +30,10 @@ await page.locator(refClose).hover();await settle();reference.hover=await snapsh
 await page.mouse.move(0,0);await page.keyboard.press('Tab');await page.locator(refClose).focus();await settle();reference.focus=await snapshot(refClose);
 await page.locator('[data-slot="dialog-content"]').screenshot({path:path.join(output,'hm-dialog-reference-popup.png')});
 measurements.push({name:'HM Dialog actual public component',...reference});
+// Expanded is preview-only (2026-10-22): no popup selector, so its Core case was removed; Core stays covered by Full/Vanilla.
 const cases=[
   {name:'storybook-full',url:`${story}/iframe.html?id=orgchart--full-composition&viewMode=story`,kind:'Core native'},
   {name:'storybook-expanded-hm',url:`${story}/iframe.html?id=orgchart--expanded-org-chart&viewMode=story`,kind:'React HMDesign Dialog'},
-  {name:'storybook-expanded-core',url:`${story}/iframe.html?id=orgchart--expanded-org-chart&viewMode=story`,kind:'Core native',coreOption:true},
   {name:'vanilla-index',url:`${vanilla}/index.html`,kind:'Core native',vanilla:true},
   {name:'vanilla-full',url:`${vanilla}/p1.html?mode=readOnly`,kind:'Core native',vanilla:true},
   {name:'vanilla-expanded',url:`${vanilla}/expanded.html`,kind:'Core native',vanilla:true},
@@ -42,7 +42,6 @@ const near=(a,b)=>Math.abs(a-b)<.02,eq=(a,b)=>JSON.stringify(a)===JSON.stringify
 for(const width of [1440,390])for(const item of cases){
   const label=`${item.name} ${width}`;await page.setViewportSize({width,height:900});await page.goto(item.url);
   await page.waitForFunction(()=>{const root=document.querySelector('.hm-orgchart-host')?.shadowRoot;return root?.querySelector('.hm-orgchart-employee[role="button"]')&&[...root.querySelectorAll('link[rel="stylesheet"]')].every(link=>link.sheet);});await settle();
-  if(item.coreOption){await page.getByRole('combobox',{name:'직원 정보 팝업',exact:true}).click();await page.getByRole('option',{name:'Core 기본 팝업',exact:true}).click();await settle();}
   // Use a rendered card inside the horizontally clipped viewport; the Forest
   // may legitimately extend beyond the viewport without shrinking its cards.
   const choice=await page.evaluate(()=>{