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">

src/app/preview/page.tsx

@@ -0,0 +1,19 @@
+"use client";
+
+import { useEditorStore } from "@/features/editor/state/editorStore";
+import { PublicPageRenderer } from "@/features/editor/components/PublicPageRenderer";
+
+export default function PreviewPage() {
+  const blocks = useEditorStore((state) => state.blocks);
+
+  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 Preview</h1>
+        <p className="text-xs text-slate-400">빌더로 만든 페이지를 미리 보는 화면</p>
+      </header>
+      {/* 에디터 크롬 없이 순수 페이지 형태로 블록들을 렌더링 */}
+      <PublicPageRenderer blocks={blocks} />
+    </main>
+  );
+}

src/features/editor/components/PublicPageRenderer.tsx

@@ -0,0 +1,106 @@
+"use client";
+
+import type { Block, TextBlockProps, ButtonBlockProps, ImageBlockProps, SectionBlockProps } from "@/features/editor/state/editorStore";
+
+// 에디터 크롬 없이 실제 랜딩 페이지처럼 블록들을 렌더링하는 컴포넌트
+interface PublicPageRendererProps {
+  blocks: Block[];
+}
+
+export function PublicPageRenderer({ blocks }: PublicPageRendererProps) {
+  const sectionBlocks = blocks.filter((b) => b.type === "section");
+  const rootBlocks = blocks.filter((b) => !b.sectionId && b.type !== "section");
+
+  const renderBlock = (block: Block) => {
+    if (block.type === "text") {
+      const props = block.props as TextBlockProps;
+
+      const alignClass =
+        props.align === "center" ? "text-center" : props.align === "right" ? "text-right" : "text-left";
+      const sizeClass = props.size === "sm" ? "text-sm" : props.size === "lg" ? "text-2xl" : "text-base";
+
+      return (
+        <p key={block.id} className={`${alignClass} ${sizeClass} text-slate-50 leading-relaxed`}>
+          {props.text}
+        </p>
+      );
+    }
+
+    if (block.type === "button") {
+      const props = block.props as ButtonBlockProps;
+
+      return (
+        <a
+          key={block.id}
+          href={props.href}
+          className="inline-flex items-center justify-center rounded-md bg-sky-600 px-4 py-2 text-sm font-medium text-white hover:bg-sky-500 transition-colors"
+        >
+          {props.label}
+        </a>
+      );
+    }
+
+    if (block.type === "image") {
+      const props = block.props as ImageBlockProps;
+
+      return (
+        <div key={block.id} className="w-full flex justify-center">
+          {/* eslint-disable-next-line @next/next/no-img-element */}
+          <img src={props.src || ""} alt={props.alt} className="max-w-full h-auto object-contain" />
+        </div>
+      );
+    }
+
+    return null;
+  };
+
+  const renderSection = (section: Block) => {
+    const props = section.props as SectionBlockProps;
+
+    const bgClass =
+      props.background === "muted" ? "bg-slate-900" : props.background === "primary" ? "bg-sky-900" : "bg-slate-950";
+
+    const pyClass = props.paddingY === "sm" ? "py-8" : props.paddingY === "lg" ? "py-20" : "py-12";
+
+    const columns = props.columns && props.columns.length > 0 ? props.columns : [{ id: `${section.id}_col`, span: 12 }];
+
+    return (
+      <section key={section.id} className={`${bgClass} ${pyClass}`}>
+        <div className="mx-auto max-w-5xl px-4">
+          <div className="flex gap-8">
+            {columns.map((col) => {
+              const basis = `${(col.span / 12) * 100}%`;
+              const columnBlocks = blocks.filter((b) => b.sectionId === section.id && b.columnId === col.id);
+
+              return (
+                <div key={col.id} className="flex flex-col gap-4" style={{ flexBasis: basis }}>
+                  {columnBlocks.map((b) => (
+                    <div key={b.id}>{renderBlock(b)}</div>
+                  ))}
+                </div>
+              );
+            })}
+          </div>
+        </div>
+      </section>
+    );
+  };
+
+  return (
+    <div className="flex-1 flex flex-col bg-slate-950 text-slate-50">
+      {/* 루트 텍스트/버튼/이미지 블록들이 있다면 페이지 상단에 노출 */}
+      {rootBlocks.length > 0 && (
+        <section className="bg-slate-950 py-12">
+          <div className="mx-auto max-w-3xl px-4 flex flex-col gap-4">
+            {rootBlocks.map((b) => (
+              <div key={b.id}>{renderBlock(b)}</div>
+            ))}
+          </div>
+        </section>
+      )}
+
+      {/* 섹션 블록들 */}
+      {sectionBlocks.map((section) => renderSection(section))}
+    </div>
+  );
+}