feat(view): ②·③ 모델과 입력창/철근표를 상하·좌우로 전환하고 분할선으로 크기 조절

- 중앙 도구줄 '상하 | 좌우' 전환(② 도구줄 신설), 분할선 드래그·키보드(←→↑↓, Shift×5, Home/End)·더블클릭 기본값
- 상하: 모델 높이 180–560 px, 좌우: 모델 폭 30–70 %(모델 왼쪽), 모델 접기 시 창 전체 사용
- 중앙 열 900 px 미만·1100 px 이하 화면은 자동 상하 + 안내, 넓어지면 복귀
- 단계별 표시 설정을 localStorage에 저장(기존 pierzainer.review-layout 이관), 프로젝트 파일 미포함
- 오른쪽 창 묶음(.workspace-pane) 도입에 맞춰 기존 검증 스크립트 선택자 갱신
- 단위시험 4개, verify-workspace-layout.cjs Chrome 27개 검사

Co-Authored-By: Claude Haiku 5.5 <noreply@anthropic.com>

scripts/review-design-a.cjs

@@ -40,10 +40,10 @@ const delay=ms=>new Promise(r=>setTimeout(r,ms));let ws;
  await click('#review-tasks button');report.taskJump=await ev(`({focused:document.activeElement?.innerText,selected:document.querySelector('#rebar-table').innerText.includes('강조 중')})`);
  await ev(`[...document.querySelectorAll('#rebar-tabs button')].find(b=>b.textContent.includes('확대기초')).click()`);
  await ev(`document.querySelector('#review-model-height').value='180';document.querySelector('#review-model-height').dispatchEvent(new Event('input',{bubbles:true}))`);
- await click('#review-inputs');report.inputJump=await ev(`({focused:document.activeElement?.id,scroll:document.querySelector('#review-workspace > .viewer').scrollTop})`);
+ await click('#review-inputs');report.inputJump=await ev(`({focused:document.activeElement?.id,scroll:document.querySelector('#review-workspace .workspace-pane > .viewer').scrollTop})`);
  await click('#review-model-toggle');await click('#review-table');
  await ev(`document.querySelector('#view-rebar > .results').scrollTop=250`);await cap('05-collapsed-table-material-1280');
- report.end=await ev(`({modelHidden:getComputedStyle(document.querySelector('#slot-rebar')).display,expanded:document.querySelector('#review-model-toggle').getAttribute('aria-expanded'),focused:document.activeElement.tagName,frames:[...document.querySelectorAll('#view-rebar > .panel,#review-workspace,#review-workspace > .viewer')].map(e=>({id:e.id,class:e.className,overflow:getComputedStyle(e).overflow,clientHeight:e.clientHeight,scrollHeight:e.scrollHeight,scrollTop:e.scrollTop}))})`);
+ report.end=await ev(`({modelHidden:getComputedStyle(document.querySelector('#slot-rebar')).display,expanded:document.querySelector('#review-model-toggle').getAttribute('aria-expanded'),focused:document.activeElement.tagName,frames:[...document.querySelectorAll('#view-rebar > .panel,#review-workspace,#review-workspace .workspace-pane > .viewer')].map(e=>({id:e.id,class:e.className,overflow:getComputedStyle(e).overflow,clientHeight:e.clientHeight,scrollHeight:e.scrollHeight,scrollTop:e.scrollTop}))})`);
  report.finished=new Date().toISOString();fs.writeFileSync(path.join(out,'raw.json'),JSON.stringify(report,null,2));console.log(JSON.stringify(report));
  await send('Page.close');ws.close();
 })().catch(e=>{report.failure=String(e.stack||e);fs.writeFileSync(path.join(out,'raw.json'),JSON.stringify(report,null,2));console.error(e);if(ws)ws.close();process.exitCode=1});