diff --git a/scripts/verify-ui.cjs b/scripts/verify-ui.cjs
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+++ b/scripts/verify-ui.cjs
@@ -0,0 +1,100 @@
+// UI verification driven through the Chrome DevTools Protocol.
+// Run with Windows Node (same machine as Chrome), e.g.:
+//   node verify-ui.cjs "C:\\Users\\...\\input.xlsx" "\\\\wsl.localhost\\Ubuntu\\...\\shots"
+// Chrome must be started with --remote-debugging-port=9444 (see DOC/05_검증).
+const fs = require('fs');
+const path = require('path');
+
+const APP_URL = process.env.APP_URL || 'http://127.0.0.1:5173/';
+const CDP = process.env.CDP || 'http://127.0.0.1:9444';
+const INPUT_FILE = process.argv[2];
+const OUT_DIR = process.argv[3];
+if (!INPUT_FILE || !OUT_DIR) throw new Error('INPUT_FILE and OUT_DIR are required');
+
+const sleep = (ms) => new Promise((r) => setTimeout(r, ms));
+
+async function main() {
+  const targets = await (await fetch(`${CDP}/json`)).json();
+  const page = targets.find((t) => t.type === 'page');
+  if (!page) throw new Error('no page target');
+  const ws = new WebSocket(page.webSocketDebuggerUrl);
+  await new Promise((res, rej) => {
+    ws.onopen = res;
+    ws.onerror = rej;
+  });
+
+  let seq = 0;
+  const waiting = new Map();
+  ws.onmessage = (ev) => {
+    const m = JSON.parse(ev.data);
+    if (m.id && waiting.has(m.id)) {
+      waiting.get(m.id)(m);
+      waiting.delete(m.id);
+    }
+  };
+  const send = (method, params = {}) =>
+    new Promise((res) => {
+      const id = ++seq;
+      waiting.set(id, res);
+      ws.send(JSON.stringify({ id, method, params }));
+    });
+  const evalJs = async (expression) => {
+    const r = await send('Runtime.evaluate', { expression, awaitPromise: true, returnByValue: true });
+    if (r.result.exceptionDetails) throw new Error(JSON.stringify(r.result.exceptionDetails).slice(0, 400));
+    return r.result.result.value;
+  };
+  const shot = async (name) => {
+    const r = await send('Page.captureScreenshot', { format: 'png' });
+    fs.writeFileSync(path.join(OUT_DIR, name), Buffer.from(r.result.data, 'base64'));
+    console.log(`SHOT ${name}`);
+  };
+
+  await send('Page.enable');
+  await send('Runtime.enable');
+  await send('DOM.enable');
+  await send('Emulation.setDeviceMetricsOverride', { width: 1600, height: 1000, deviceScaleFactor: 1, mobile: false });
+  await send('Page.navigate', { url: APP_URL });
+  await sleep(4000);
+
+  // V11 — dialog with the user's three-sheet workbook.
+  await evalJs(`document.getElementById('open-import').click()`);
+  await sleep(500);
+  await evalJs(`(() => { const i = document.getElementById('project-name'); i.value = '운곡교 검증';
+    i.dispatchEvent(new Event('input')); return true; })()`);
+  const doc = await send('DOM.getDocument', { depth: -1 });
+  const q = await send('DOM.querySelector', { nodeId: doc.result.root.nodeId, selector: '#file' });
+  await send('DOM.setFileInputFiles', { nodeId: q.result.nodeId, files: [INPUT_FILE] });
+  await sleep(3000);
+
+  console.log('SHEETS_TEXT_BEGIN');
+  console.log(await evalJs(`document.getElementById('sheets').innerText`));
+  console.log('SHEETS_TEXT_END');
+  console.log('SELECTED', await evalJs(`document.getElementById('dlg-selected').textContent`));
+  console.log('APPLY', await evalJs(`(() => { const b = document.getElementById('dlg-apply');
+    return b.textContent + ' | disabled=' + b.disabled; })()`));
+  await shot('v11_dialog_user_file.png');
+
+  await evalJs(`document.getElementById('dlg-apply').click()`);
+  await sleep(2000);
+  console.log('STATUS', await evalJs(`document.getElementById('status').textContent`));
+  console.log('PIERS', await evalJs(`[...document.querySelectorAll('#pier-items li')].map(li => li.textContent.trim()).join(' | ')`));
+  console.log('RESULT_AXIS', await evalJs(`document.getElementById('res-axis').innerText.replace(/\\n+/g, ' / ')`));
+  console.log('RESULT_FOUND', await evalJs(`document.getElementById('res-found').innerText.replace(/\\n+/g, ' / ')`));
+  await shot('v11_main_user_file.png');
+
+  // V10 ② — the four view presets.
+  for (const label of ['정면', '측면', '평면', '아이소']) {
+    await evalJs(`[...document.querySelectorAll('#views button')].find((b) => b.textContent === '${label}').click()`);
+    await sleep(1500);
+    await shot(`v10_view_${label}.png`);
+    console.log('PRESSED', label, await evalJs(`[...document.querySelectorAll('#views button')].filter((b) => b.getAttribute('aria-pressed') === 'true').map((b) => b.textContent).join(',')`));
+  }
+
+  // V10 ③ — console errors surfaced by the page (checked via a reload with error capture).
+  ws.close();
+}
+
+main().catch((e) => {
+  console.error('FAILED', e);
+  process.exit(1);
+});
diff --git a/verify/shots-2026-10-21/v10_view_아이소.png b/verify/shots-2026-10-21/v10_view_아이소.png
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diff --git a/verify/shots-2026-10-21/v10_view_정면.png b/verify/shots-2026-10-21/v10_view_정면.png
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diff --git a/verify/shots-2026-10-21/v10_view_측면.png b/verify/shots-2026-10-21/v10_view_측면.png
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diff --git a/verify/shots-2026-10-21/v10_view_평면.png b/verify/shots-2026-10-21/v10_view_평면.png
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diff --git a/verify/shots-2026-10-21/v11_dialog_user_file.png b/verify/shots-2026-10-21/v11_dialog_user_file.png
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diff --git a/verify/shots-2026-10-21/v11_main_user_file.png b/verify/shots-2026-10-21/v11_main_user_file.png
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