프리뷰 모드: 에디터 크롬 없이 페이지 미리보기 구현

src/app/editor/page.tsx

@@ -2,6 +2,7 @@
 
 import type { CSSProperties, ReactNode } from "react";
 import { useState } from "react";
+import Link from "next/link";
 import {
   DndContext,
   PointerSensor,
@@ -222,8 +223,16 @@ export default function EditorPage() {
   return (
     <main className="min-h-screen flex flex-col bg-slate-950 text-slate-50">
       <header className="border-b border-slate-800 px-6 py-4 flex items-center justify-between">
-        <h1 className="text-xl font-semibold">Page Editor</h1>
-        <p className="text-xs text-slate-400">빌더 MVP용 에디터 페이지 골격</p>
+        <div className="flex items-baseline gap-3">
+          <h1 className="text-xl font-semibold">Page Editor</h1>
+          <p className="text-xs text-slate-400">빌더 MVP용 에디터 페이지 골격</p>
+        </div>
+        <Link
+          href="/preview"
+          className="inline-flex items-center rounded border border-slate-700 bg-slate-900 px-3 py-1 text-xs text-slate-100 hover:bg-slate-800"
+        >
+          프리뷰 열기
+        </Link>
       </header>
       <section className="flex flex-1 overflow-hidden">
         <aside className="w-60 border-r border-slate-800 p-4 text-sm space-y-3">