feat(rebar): 현장타설 말뚝 · 다주형 코핑 형상과 철근 계산

- 현장타설 기둥·말뚝 형상(cast-in-place-shape)과 주철근·횡철근·커플러 계산(rebar/cast-in-place, cast-layout)
- 다주형 코핑 철근(multicol-coping), 기둥 높이 · 양단부 연장
- 철근표 요약 · 재료 수량 · 3D 뷰 연결과 삽도(cast-rebar-svg)
- 검사 기준 갱신과 회귀 테스트, 검증 스크립트 보관

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

scripts/verify-multicol-coping.cjs

@@ -0,0 +1,76 @@
+// Run with Windows Node against the task's isolated Chrome CDP on port 9444.
+const fs = require('node:fs');
+const path = require('node:path');
+const out = path.resolve(__dirname, '../.verify/multicol-coping-20261105');
+fs.mkdirSync(out, { recursive: true });
+(async () => {
+  const targets = await (await fetch('http://127.0.0.1:9444/json')).json();
+  const page = targets.find(t => t.type === 'page' && t.url.startsWith('http://127.0.0.1:5173'));
+  if (!page) throw new Error('Task browser page missing');
+  const ws = new WebSocket(page.webSocketDebuggerUrl);
+  await new Promise((resolve, reject) => { ws.onopen = resolve; ws.onerror = reject; });
+  let seq = 0;
+  const pending = new Map();
+  ws.onmessage = ({ data }) => {
+    const msg = JSON.parse(data);
+    const p = pending.get(msg.id);
+    if (p) { pending.delete(msg.id); clearTimeout(p.timer); msg.error ? p.reject(new Error(JSON.stringify(msg.error))) : p.resolve(msg.result); }
+  };
+  const send = (method, params = {}) => new Promise((resolve, reject) => {
+    const id = ++seq;
+    const timer = setTimeout(() => { pending.delete(id); reject(new Error(`Timeout ${method}`)); }, 20000);
+    pending.set(id, { resolve, reject, timer });
+    ws.send(JSON.stringify({ id, method, params }));
+  });
+  try {
+    await send('Emulation.setDeviceMetricsOverride', { width: 1200, height: 750, deviceScaleFactor: 1, mobile: false });
+    const results = [];
+    for (const type of ['2주형', '3주형']) {
+      const res = await send('Runtime.evaluate', { awaitPromise: true, returnByValue: true, expression: `
+        (async () => {
+          const THREE = await import('/node_modules/.vite/deps/three.js');
+          const XLSX = await import('/node_modules/xlsx/xlsx.mjs');
+          const { parseWorkbook } = await import('/src/core/parseWorkbook.ts');
+          const { buildPier } = await import('/src/core/geometry.ts');
+          const { buildPierScene } = await import('/src/view/scene.ts');
+          const buf = await (await fetch('/samples/' + encodeURIComponent('운곡교P1입력.xlsx'))).arrayBuffer();
+          const base = parseWorkbook(XLSX.read(buf)).piers.find(p => p.name === 'P1');
+          if (!base) throw new Error('P1 sample missing');
+          const m = buildPier({ ...base, type: ${JSON.stringify(type)}, columnCount: ${type === '2주형' ? 2 : 3} });
+          const built = buildPierScene(m);
+          const scene = new THREE.Scene(); scene.background = new THREE.Color(0xe9eef4);
+          const group = new THREE.Group();
+          group.add(built.parts.coping, built.parts.columns); scene.add(group);
+          const center = new THREE.Vector3();
+          const bounds = new THREE.Box3().setFromObject(built.parts.coping);
+          bounds.getCenter(center);
+          // Align the camera along the cross-axis to make both interior haunches visible.
+          const u = new THREE.Vector3(m.u.e, 0, -m.u.n);
+          const cross = new THREE.Vector3(m.nrm.e, 0, -m.nrm.n);
+          const camera = new THREE.PerspectiveCamera(36, 1200/750, 0.1, 1000);
+          const target = center.clone().add(new THREE.Vector3(0, -0.9, 0));
+          camera.position.copy(target).addScaledVector(cross, m.copingL * 1.6).addScaledVector(u, -m.copingL * 0.12).add(new THREE.Vector3(0,-2.5,0));
+          camera.lookAt(target);
+          scene.add(new THREE.HemisphereLight(0xffffff, 0x687784, 2.4));
+          const light = new THREE.DirectionalLight(0xffffff, 2); light.position.copy(camera.position).add(new THREE.Vector3(0,10,0)); scene.add(light);
+          const renderer = new THREE.WebGLRenderer({ antialias: true, preserveDrawingBuffer: true });
+          renderer.setSize(1200,750); renderer.localClippingEnabled = true;
+          document.body.replaceChildren(renderer.domElement); document.body.style.margin = '0';
+          renderer.render(scene,camera);
+          const profile = m.copingParts[0].profile;
+          const raised = profile.filter(([,z]) => Math.abs(z-m.levelBottom-0.3)<1e-8).length;
+          if (raised !== (m.columns.length-1)*2) throw new Error('Raised span count mismatch');
+          if (Math.abs(Math.min(...profile.map(p=>p[1]))-m.levelBottom)>1e-8) throw new Error('Underside below column Level');
+          if (!m.columns.every(c=>c.top===m.levelBottom)) throw new Error('Column connection changed');
+          return { type: ${JSON.stringify(type)}, raisedVertices: raised, levelBottom:m.levelBottom, interiorBottom:m.levelBottom+0.3, columns:m.columns.length, profile, screenshot:renderer.domElement.toDataURL('image/png') };
+        })()
+      ` });
+      if (res.exceptionDetails) throw new Error(res.exceptionDetails.exception?.description || res.exceptionDetails.text);
+      const { screenshot, ...result } = res.result.value;
+      fs.writeFileSync(path.join(out, `${type}.png`), Buffer.from(screenshot.split(',')[1], 'base64'));
+      results.push(result);
+    }
+    fs.writeFileSync(path.join(out, 'report.json'), JSON.stringify(results, null, 2));
+    console.log(JSON.stringify(results.map(({ profile, ...r }) => r)));
+  } finally { ws.close(); }
+})().catch(e => { console.error(e); process.exitCode = 1; });