test(eval): add interview behavior eval harness

build/eval/interview/fixtures/s4-design-md/index.html

@@ -0,0 +1,35 @@
+<!doctype html>
+<html lang="ko">
+<head>
+  <meta charset="utf-8" />
+  <title>스택노트 — 개발자를 위한 노트</title>
+  <style>
+    :root {
+      --color-bg: #0b0f14;
+      --color-surface: #121822;
+      --color-text: #e6edf3;
+      --color-accent: #5eead4;
+      --font-family: "Inter", system-ui, sans-serif;
+      --radius-base: 8px;
+    }
+    body {
+      margin: 0;
+      background: var(--color-bg);
+      color: var(--color-text);
+      font-family: var(--font-family);
+    }
+    header {
+      padding: 64px 24px;
+      text-align: center;
+    }
+    header h1 { font-size: 2.5rem; margin: 0 0 12px; }
+    header p { opacity: 0.8; margin: 0; }
+  </style>
+</head>
+<body>
+  <header>
+    <h1>스택노트</h1>
+    <p>개발자를 위한 빠른 노트 앱</p>
+  </header>
+</body>
+</html>