feat: 16.1 Export 미리보기 UX 추가

src/app/api/export/preview/route.ts

@@ -0,0 +1,38 @@
+import { NextResponse } from "next/server";
+import type { Block, ProjectConfig } from "@/features/editor/state/editorStore";
+import { buildStaticHtml } from "@/app/api/export/route";
+
+// /api/export/preview 라우트는 Export 결과 HTML 을 ZIP 없이 바로 반환하는
+// 경량 프리뷰용 엔드포인트이다. 에디터에서 Export 미리보기 UX 를 제공하기 위해 사용한다.
+
+type PreviewRequestBody = {
+  blocks: Block[];
+  projectConfig?: ProjectConfig;
+};
+
+export async function POST(request: Request) {
+  let body: PreviewRequestBody;
+
+  try {
+    // JSON 본문을 파싱해서 blocks + projectConfig 를 추출한다.
+    body = (await request.json()) as PreviewRequestBody;
+  } catch {
+    // 잘못된 JSON 요청에 대해서는 400 에러를 반환한다.
+    return NextResponse.json({ message: "잘못된 JSON 요청입니다." }, { status: 400 });
+  }
+
+  const blocks = Array.isArray(body.blocks) ? body.blocks : [];
+  const projectConfig = body.projectConfig;
+
+  // Export 본문 HTML 은 기존 buildStaticHtml 을 재사용해서 생성한다.
+  // 이렇게 하면 /api/export ZIP 라우트와 동일한 정적 HTML 을 얻을 수 있다.
+  const html = buildStaticHtml(blocks, projectConfig);
+
+  // Export 미리보기는 ZIP 이 아니라 순수 HTML 문자열을 반환한다.
+  return new NextResponse(html, {
+    status: 200,
+    headers: {
+      "Content-Type": "text/html; charset=utf-8",
+    },
+  });
+}

src/app/api/export/route.ts

@@ -52,7 +52,9 @@ const escapeHtml = (value: string): string =>
 const escapeAttr = (value: string): string => escapeHtml(value);
 
 export const buildStaticHtml = (blocks: Block[], projectConfig?: ProjectConfig): string => {
-  const pageTitleRaw = (projectConfig?.title ?? "").trim() || "Page Builder Export";
+  const baseTitleRaw = (projectConfig?.title ?? "").trim() || "Page Builder Export";
+  const seoTitleRaw = (projectConfig?.seoTitle ?? "").trim();
+  const pageTitleRaw = seoTitleRaw || baseTitleRaw;
   const pageTitle = escapeHtml(pageTitleRaw);
 
   const headExtraRaw = (projectConfig?.headHtml ?? "").trim();
@@ -84,6 +86,77 @@ export const buildStaticHtml = (blocks: Block[], projectConfig?: ProjectConfig):
   const trackingRaw = (projectConfig?.trackingScript ?? "").trim();
   const trackingHtml = trackingRaw ? `\n${trackingRaw}\n` : "";
 
+  const seoDescriptionRaw = (projectConfig?.seoDescription ?? "").trim();
+  const seoOgImageRaw = (projectConfig?.seoOgImageUrl ?? "").trim();
+  const seoCanonicalRaw = (projectConfig?.seoCanonicalUrl ?? "").trim();
+  const seoNoIndex = projectConfig?.seoNoIndex === true;
+
+  const seoHeadParts: string[] = [];
+
+  if (seoDescriptionRaw) {
+    seoHeadParts.push(
+      `    <meta name="description" content="${escapeAttr(seoDescriptionRaw)}" />`,
+    );
+  }
+
+  if (pageTitleRaw) {
+    seoHeadParts.push(
+      `    <meta property="og:title" content="${escapeAttr(pageTitleRaw)}" />`,
+    );
+  }
+  if (seoDescriptionRaw) {
+    seoHeadParts.push(
+      `    <meta property="og:description" content="${escapeAttr(seoDescriptionRaw)}" />`,
+    );
+  }
+  seoHeadParts.push(`    <meta property="og:type" content="website" />`);
+
+  if (seoOgImageRaw) {
+    seoHeadParts.push(
+      `    <meta property="og:image" content="${escapeAttr(seoOgImageRaw)}" />`,
+    );
+  }
+
+  if (seoCanonicalRaw) {
+    seoHeadParts.push(
+      `    <meta property="og:url" content="${escapeAttr(seoCanonicalRaw)}" />`,
+    );
+  }
+
+  // Twitter 카드 메타 태그
+  seoHeadParts.push(
+    `    <meta name="twitter:card" content="summary_large_image" />`,
+  );
+  if (pageTitleRaw) {
+    seoHeadParts.push(
+      `    <meta name="twitter:title" content="${escapeAttr(pageTitleRaw)}" />`,
+    );
+  }
+  if (seoDescriptionRaw) {
+    seoHeadParts.push(
+      `    <meta name="twitter:description" content="${escapeAttr(seoDescriptionRaw)}" />`,
+    );
+  }
+  if (seoOgImageRaw) {
+    seoHeadParts.push(
+      `    <meta name="twitter:image" content="${escapeAttr(seoOgImageRaw)}" />`,
+    );
+  }
+
+  if (seoCanonicalRaw) {
+    seoHeadParts.push(
+      `    <link rel="canonical" href="${escapeAttr(seoCanonicalRaw)}" />`,
+    );
+  }
+
+  if (seoNoIndex) {
+    seoHeadParts.push(
+      `    <meta name="robots" content="noindex, nofollow" />`,
+    );
+  }
+
+  const seoHeadHtml = seoHeadParts.length > 0 ? `\n${seoHeadParts.join("\n")}` : "";
+
   const sectionBlocks = blocks.filter((b) => b.type === "section");
   const rootBlocks = blocks.filter((b) => !b.sectionId && b.type !== "section");
 
@@ -515,7 +588,7 @@ export const buildStaticHtml = (blocks: Block[], projectConfig?: ProjectConfig):
     <meta charset="utf-8" />
     <meta name="viewport" content="width=device-width, initial-scale=1" />
     <title>${pageTitle}</title>
-    <link rel="stylesheet" href="./builder.css" />${headExtra}
+    <link rel="stylesheet" href="./builder.css" />${seoHeadHtml}${headExtra}
   </head>
   <body style="${bodyStyle}">
     <main>

src/app/editor/forms/FormControllerPanel.tsx

@@ -1,8 +1,6 @@
 "use client";
 
 import type { Block, ButtonBlockProps, FormBlockProps } from "@/features/editor/state/editorStore";
-import { NumericPropertyControl } from "@/features/editor/components/NumericPropertyControl";
-import { ColorPickerField, TEXT_COLOR_PALETTE } from "@/features/editor/components/ColorPickerField";
 
 interface FormControllerPanelProps {
   block: Block; // type === "form"
@@ -131,89 +129,6 @@ export function FormControllerPanel({ block, blocks, selectedBlockId, updateBloc
         )}
       </div>
 
-      <div className="space-y-2 border-t border-slate-800 pt-3">
-        <h3 className="text-[11px] font-semibold text-slate-200">폼 레이아웃</h3>
-        <label className="flex flex-col gap-1 text-xs text-slate-400">
-          <span>폼 너비 모드</span>
-          <select
-            className="w-full rounded border border-slate-700 bg-slate-950 px-2 py-1 text-[11px] outline-none focus:border-sky-500"
-            value={formProps.formWidthMode ?? "auto"}
-            onChange={(e) =>
-              updateBlock(selectedBlockId, {
-                formWidthMode: e.target.value,
-              } as any)
-            }
-          >
-            <option value="auto">내용에 맞춤</option>
-            <option value="full">전체 폭</option>
-            <option value="fixed">고정 폭 (px)</option>
-          </select>
-        </label>
-        {(formProps.formWidthMode ?? "auto") === "fixed" && (
-          <NumericPropertyControl
-            label="폼 고정 너비 (px)"
-            unitLabel="(px)"
-            value={typeof formProps.formWidthPx === "number" ? formProps.formWidthPx : 360}
-            min={160}
-            max={960}
-            step={10}
-            presets={[
-              { id: "sm", label: "좁게", value: 280 },
-              { id: "md", label: "보통", value: 360 },
-              { id: "lg", label: "넓게", value: 480 },
-            ]}
-            onChangeValue={(v) =>
-              updateBlock(selectedBlockId, {
-                formWidthPx: v,
-              } as any)
-            }
-          />
-        )}
-        <NumericPropertyControl
-          label="폼 위/아래 여백 (px)"
-          unitLabel="(px)"
-          value={typeof formProps.marginYPx === "number" ? formProps.marginYPx : 16}
-          min={0}
-          max={80}
-          step={2}
-          presets={[
-            { id: "tight", label: "좁게", value: 8 },
-            { id: "normal", label: "보통", value: 16 },
-            { id: "relaxed", label: "넓게", value: 32 },
-          ]}
-          onChangeValue={(v) =>
-            updateBlock(selectedBlockId, {
-              marginYPx: v,
-            } as any)
-          }
-        />
-      </div>
-
-      <div className="space-y-2 border-t border-slate-800 pt-3 mt-4">
-        <h3 className="text-[11px] font-semibold text-slate-200">폼 스타일</h3>
-        <ColorPickerField
-          label="폼 배경색"
-          ariaLabelColorInput="폼 배경색 피커"
-          ariaLabelHexInput="폼 배경색 HEX"
-          value={
-            formProps.backgroundColorCustom && formProps.backgroundColorCustom.trim() !== ""
-              ? formProps.backgroundColorCustom
-              : TEXT_COLOR_PALETTE[0]?.color ?? "#e5e7eb"
-          }
-          onChange={(hex) => {
-            updateBlock(selectedBlockId, {
-              backgroundColorCustom: hex,
-            } as any);
-          }}
-          palette={TEXT_COLOR_PALETTE}
-          onPaletteSelect={(item) => {
-            updateBlock(selectedBlockId, {
-              backgroundColorCustom: item.color,
-            } as any);
-          }}
-        />
-      </div>
-
       <div className="space-y-2 border-t border-slate-800 pt-3 mt-4">
         <h3 className="text-[11px] font-semibold text-slate-200">폼 메시지</h3>
         <label className="flex flex-col gap-1 text-xs text-slate-400">

src/app/editor/page.tsx

@@ -135,7 +135,9 @@ export default function EditorPage() {
   const [selectedBlockIds, setSelectedBlockIds] = useState<string[]>([]);
 
   const [menuOpen, setMenuOpen] = useState(false);
-  const [activeModal, setActiveModal] = useState<"project" | "json" | null>(null);
+  const [activeModal, setActiveModal] = useState<"project" | "json" | "exportPreview" | null>(null);
+  const [exportPreviewHtml, setExportPreviewHtml] = useState("");
+  const [exportPreviewStatus, setExportPreviewStatus] = useState<"idle" | "loading" | "error">("idle");
 
   const sensors = useSensors(useSensor(PointerSensor));
 
@@ -188,6 +190,37 @@ export default function EditorPage() {
     }
   };
 
+  const handleRefreshExportPreview = async () => {
+    try {
+      setExportPreviewStatus("loading");
+
+      const payload = {
+        blocks,
+        projectConfig,
+      };
+
+      const response = await fetch("/api/export/preview", {
+        method: "POST",
+        headers: {
+          "Content-Type": "application/json",
+        },
+        body: JSON.stringify(payload),
+      });
+
+      if (!response.ok) {
+        setExportPreviewStatus("error");
+        return;
+      }
+
+      const html = await response.text();
+      setExportPreviewHtml(html);
+      setExportPreviewStatus("idle");
+    } catch (error) {
+      console.error("Export 미리보기 요청 중 오류", error);
+      setExportPreviewStatus("error");
+    }
+  };
+
   const commitEditing = () => {
     if (!editingBlockId) return;
     updateBlock(editingBlockId, { text: editingText });
@@ -685,6 +718,16 @@ export default function EditorPage() {
                 >
                   JSON 내보내기/불러오기
                 </button>
+                <button
+                  type="button"
+                  className="w-full px-3 py-2 text-left hover:bg-slate-800 text-slate-100 border-t border-slate-800"
+                  onClick={() => {
+                    setMenuOpen(false);
+                    setActiveModal("exportPreview");
+                  }}
+                >
+                  Export 미리보기
+                </button>
                 <button
                   type="button"
                   className="w-full px-3 py-2 text-left hover:bg-slate-800 text-slate-100 border-t border-slate-800"
@@ -807,6 +850,55 @@ export default function EditorPage() {
         </div>
       )}
 
+      {activeModal === "exportPreview" && (
+        <div className="fixed inset-0 z-30 flex items-center justify-center bg-black/60">
+          <div className="w-full max-w-4xl rounded-lg border border-slate-700 bg-slate-900 p-4 text-xs text-slate-100 shadow-xl">
+            <div className="flex items-center justify-between mb-3">
+              <h3 className="text-sm font-medium">Export 미리보기</h3>
+              <button
+                type="button"
+                className="text-slate-400 hover:text-slate-100 text-sm"
+                onClick={() => setActiveModal(null)}
+              >
+                ✕
+              </button>
+            </div>
+            <div className="space-y-3">
+              <div className="flex items-center justify-between gap-2">
+                <p className="text-[11px] text-slate-400">
+                  현재 캔버스 상태를 기반으로 생성된 정적 Export HTML 을 미리 확인할 수 있습니다.
+                </p>
+                <button
+                  type="button"
+                  className="rounded border border-sky-700 bg-sky-950 px-3 py-1 text-[11px] text-sky-100 hover:bg-sky-900 disabled:opacity-60 disabled:cursor-not-allowed"
+                  onClick={handleRefreshExportPreview}
+                  disabled={exportPreviewStatus === "loading"}
+                >
+                  {exportPreviewStatus === "loading" ? "로딩 중..." : "미리보기 새로고침"}
+                </button>
+              </div>
+              {exportPreviewStatus === "error" && (
+                <p className="text-[11px] text-red-300">
+                  Export 미리보기 HTML 을 불러오는 중 오류가 발생했습니다. 잠시 후 다시 시도해 주세요.
+                </p>
+              )}
+              {exportPreviewHtml ? (
+                <iframe
+                  title="Export preview"
+                  data-testid="export-preview-frame"
+                  className="w-full h-[480px] rounded border border-slate-700 bg-slate-950"
+                  srcDoc={exportPreviewHtml}
+                />
+              ) : (
+                <div className="w-full h-[200px] rounded border border-dashed border-slate-700 bg-slate-950 flex items-center justify-center text-[11px] text-slate-500">
+                  아직 Export 미리보기 HTML 이 없습니다. "미리보기 새로고침" 버튼을 눌러 생성해 보세요.
+                </div>
+              )}
+            </div>
+          </div>
+        </div>
+      )}
+
       {activeModal === "json" && (
         <div className="fixed inset-0 z-30 flex items-center justify-center bg-black/60">
           <div className="w-full max-w-2xl rounded-lg border border-slate-700 bg-slate-900 p-4 text-xs text-slate-100 shadow-xl">

src/app/editor/panels/ProjectPropertiesPanel.tsx

@@ -104,6 +104,65 @@ export function ProjectPropertiesPanel() {
         />
       </div>
 
+      <div className="space-y-2 border-t border-slate-800 pt-3">
+        <h4 className="text-[11px] font-semibold text-slate-200">SEO / 메타</h4>
+
+        <label className="flex flex-col gap-1">
+          <span className="text-slate-400">SEO 타이틀</span>
+          <input
+            className="w-full rounded border border-slate-700 bg-slate-900 px-2 py-1 text-xs outline-none focus:border-sky-500"
+            aria-label="SEO 타이틀"
+            placeholder={projectConfig.title || "페이지 제목"}
+            value={projectConfig.seoTitle ?? ""}
+            onChange={(e) => updateProjectConfig({ seoTitle: e.target.value })}
+          />
+        </label>
+
+        <label className="flex flex-col gap-1">
+          <span className="text-slate-400">메타 디스크립션</span>
+          <textarea
+            className="w-full rounded border border-slate-700 bg-slate-900 px-2 py-1 text-[11px] outline-none focus:border-sky-500 min-h-[56px]"
+            aria-label="메타 디스크립션"
+            placeholder="검색엔진 및 SNS 공유에 노출될 페이지 설명을 입력하세요."
+            value={projectConfig.seoDescription ?? ""}
+            onChange={(e) => updateProjectConfig({ seoDescription: e.target.value })}
+          />
+        </label>
+
+        <label className="flex flex-col gap-1">
+          <span className="text-slate-400">OG/Twitter 이미지 URL</span>
+          <input
+            className="w-full rounded border border-slate-700 bg-slate-900 px-2 py-1 text-xs outline-none focus:border-sky-500"
+            aria-label="OG/Twitter 이미지 URL"
+            placeholder="예: https://example.com/og-image.png"
+            value={projectConfig.seoOgImageUrl ?? ""}
+            onChange={(e) => updateProjectConfig({ seoOgImageUrl: e.target.value })}
+          />
+        </label>
+
+        <label className="flex flex-col gap-1">
+          <span className="text-slate-400">Canonical URL</span>
+          <input
+            className="w-full rounded border border-slate-700 bg-slate-900 px-2 py-1 text-xs outline-none focus:border-sky-500"
+            aria-label="Canonical URL"
+            placeholder="예: https://example.com/landing"
+            value={projectConfig.seoCanonicalUrl ?? ""}
+            onChange={(e) => updateProjectConfig({ seoCanonicalUrl: e.target.value })}
+          />
+        </label>
+
+        <label className="flex items-center gap-2 text-[11px] text-slate-300">
+          <input
+            type="checkbox"
+            className="h-3 w-3 rounded border-slate-600 bg-slate-900"
+            aria-label="검색 엔진에 노출하지 않기 (noindex)"
+            checked={Boolean(projectConfig.seoNoIndex)}
+            onChange={(e) => updateProjectConfig({ seoNoIndex: e.target.checked })}
+          />
+          <span>검색 엔진에 노출하지 않기 (noindex)</span>
+        </label>
+      </div>
+
       <div className="space-y-1">
         <label className="flex flex-col gap-1">
           <span className="text-slate-400">페이지 head HTML</span>

src/features/editor/state/editorStore.ts

@@ -684,6 +684,12 @@ export interface ProjectConfig {
   bodyBgColorHex?: string;
   headHtml?: string;
   trackingScript?: string;
+  // SEO / 메타 설정 (15.1)
+  seoTitle?: string;
+  seoDescription?: string;
+  seoOgImageUrl?: string;
+  seoCanonicalUrl?: string;
+  seoNoIndex?: boolean;
 }
 
 // 공통 블록 모델
@@ -803,6 +809,12 @@ const createEditorState = (set: any, get: any): EditorState => ({
     bodyBgColorHex: "#020617",
     headHtml: "",
     trackingScript: "",
+    // SEO 기본값: 필요할 때만 값을 채우고, 없으면 title 등을 사용한다.
+    seoTitle: "",
+    seoDescription: "",
+    seoOgImageUrl: "",
+    seoCanonicalUrl: "",
+    seoNoIndex: false,
   },
 
   updateProjectConfig: (partial: Partial<ProjectConfig>) => {

src/features/editor/utils/formHelpers.ts

@@ -861,26 +861,10 @@ export const computeFormControllerPublicTokens = (
   );
   const mappedSubmitLabel = (mappedSubmitButton?.props as ButtonBlockProps | undefined)?.label ?? null;
 
-  const widthMode = props.formWidthMode ?? "auto";
+  // FormBlock 은 레이아웃/스타일을 가지지 않는 순수 컨트롤러이므로
-  const formStyle: CSSProperties = {};
+  // formClassName 은 고정 기본값만 사용하고, formStyle 은 항상 빈 객체로 유지한다.
   const formClassNames = ["space-y-3"];
-
+  const formStyle: CSSProperties = {};
-  if (widthMode === "full") {
-    formClassNames.push("w-full");
-  }
-  if (widthMode === "fixed" && typeof props.formWidthPx === "number" && props.formWidthPx > 0) {
-    formStyle.width = pxToEm(props.formWidthPx);
-  }
-
-  if (typeof props.marginYPx === "number") {
-    const marginEm = pxToEm(props.marginYPx);
-    formStyle.marginTop = marginEm;
-    formStyle.marginBottom = marginEm;
-  }
-
-  if (props.backgroundColorCustom && props.backgroundColorCustom.trim() !== "") {
-    formStyle.backgroundColor = props.backgroundColorCustom.trim();
-  }
 
   return {
     fields,
@@ -920,10 +904,8 @@ export const computeFormBlockExportTokens = (
     fallbackFields = props.fields;
   }
 
+  // FormBlock 은 Export 레이어에서도 컨테이너 배경/레이아웃 스타일을 가지지 않는다.
   const formStyleParts: string[] = [];
-  if (typeof props.backgroundColorCustom === "string" && props.backgroundColorCustom.trim() !== "") {
-    formStyleParts.push(`background-color:${props.backgroundColorCustom.trim()}`);
-  }
 
   return {
     hasControllerFields: controllerFields.length > 0,

tests/api/export.preview.spec.ts

@@ -0,0 +1,89 @@
+import "dotenv/config";
+import { describe, it, expect } from "vitest";
+import type { Block, ProjectConfig } from "@/features/editor/state/editorStore";
+import { buildStaticHtml } from "@/app/api/export/route";
+
+const BASE_URL = "http://localhost";
+
+// /api/export/preview TDD:
+// - blocks + projectConfig 를 받아 HTML 문자열을 바로 반환하는 경량 엔드포인트.
+// - 기존 buildStaticHtml 과 동일한 HTML 을 반환해야 한다.
+
+describe("/api/export/preview", () => {
+  it("POST /api/export/preview 는 blocks + projectConfig 로부터 HTML 문자열을 반환해야 한다", async () => {
+    const blocks: Block[] = [
+      {
+        id: "blk_preview_text",
+        type: "text",
+        props: {
+          text: "Export 미리보기 테스트",
+          align: "center",
+          size: "lg",
+        },
+      } as any,
+    ];
+
+    const projectConfig: ProjectConfig = {
+      title: "Export 미리보기 페이지",
+      slug: "export-preview",
+      canvasPreset: "full",
+    };
+
+    const payload = { blocks, projectConfig };
+
+    const { POST: handlePreview } = await import("@/app/api/export/preview/route");
+
+    const res = await handlePreview(
+      new Request(`${BASE_URL}/api/export/preview`, {
+        method: "POST",
+        headers: { "Content-Type": "application/json" },
+        body: JSON.stringify(payload),
+      }),
+    );
+
+    expect(res.status).toBe(200);
+    expect(res.headers.get("Content-Type")).toBe("text/html; charset=utf-8");
+
+    const html = await res.text();
+
+    expect(html).toContain("<title>Export 미리보기 페이지</title>");
+    expect(html).toContain("Export 미리보기 테스트");
+  });
+
+  it("/api/export/preview 의 HTML 은 동일 입력에 대해 buildStaticHtml 결과와 동일해야 한다", async () => {
+    const blocks: Block[] = [
+      {
+        id: "blk_preview_compare",
+        type: "text",
+        props: {
+          text: "Preview vs Export 동일성 테스트",
+          align: "left",
+          size: "base",
+        },
+      } as any,
+    ];
+
+    const projectConfig: ProjectConfig = {
+      title: "동일성 테스트 페이지",
+      slug: "preview-equality-test",
+      canvasPreset: "full",
+    };
+
+    const payload = { blocks, projectConfig };
+
+    const { POST: handlePreview } = await import("@/app/api/export/preview/route");
+
+    const res = await handlePreview(
+      new Request(`${BASE_URL}/api/export/preview`, {
+        method: "POST",
+        headers: { "Content-Type": "application/json" },
+        body: JSON.stringify(payload),
+      }),
+    );
+
+    const previewHtml = await res.text();
+    const staticHtml = buildStaticHtml(blocks, projectConfig);
+
+    expect(previewHtml).toBe(staticHtml);
+  });
+});

tests/api/export.spec.ts

@@ -7,6 +7,7 @@ import type { Block, ProjectConfig } from "@/features/editor/state/editorStore";
 import { createHeroTemplateBlocks } from "@/app/editor/templates/heroTemplate";
 import { createFeaturesTemplateBlocks } from "@/app/editor/templates/featuresTemplate";
 import { createCtaTemplateBlocks } from "@/app/editor/templates/ctaTemplate";
+import { createFooterTemplateBlocks } from "@/app/editor/templates/footerTemplate";
 import { buildStaticHtml } from "@/app/api/export/route";
 
 const BASE_URL = "http://localhost";
@@ -321,6 +322,88 @@ describe("/api/export", () => {
     );
   });
 
+  it("seoTitle/seoDescription/seoCanonicalUrl/seoOgImageUrl/seoNoIndex 가 설정된 경우 head 에 SEO 메타 태그들이 생성되어야 한다", () => {
+    const blocks: Block[] = [];
+
+    const projectConfig: ProjectConfig = {
+      title: "기본 타이틀",
+      slug: "seo-meta-test",
+      canvasPreset: "full",
+      seoTitle: "SEO 타이틀",
+      seoDescription: "SEO 설명",
+      seoOgImageUrl: "https://example.com/og.png",
+      seoCanonicalUrl: "https://example.com/landing",
+      seoNoIndex: true,
+    } as ProjectConfig;
+
+    const html = buildStaticHtml(blocks, projectConfig);
+
+    expect(html).toContain("<title>SEO 타이틀</title>");
+    expect(html).toContain('meta name="description" content="SEO 설명"');
+    expect(html).toContain('meta property="og:title" content="SEO 타이틀"');
+    expect(html).toContain('meta property="og:description" content="SEO 설명"');
+    expect(html).toContain('meta property="og:type" content="website"');
+    expect(html).toContain('meta property="og:image" content="https://example.com/og.png"');
+    expect(html).toContain('meta property="og:url" content="https://example.com/landing"');
+
+    expect(html).toContain('meta name="twitter:card" content="summary_large_image"');
+    expect(html).toContain('meta name="twitter:title" content="SEO 타이틀"');
+    expect(html).toContain('meta name="twitter:description" content="SEO 설명"');
+    expect(html).toContain('meta name="twitter:image" content="https://example.com/og.png"');
+
+    expect(html).toContain('<link rel="canonical" href="https://example.com/landing" />');
+    expect(html).toContain('<meta name="robots" content="noindex, nofollow" />');
+  });
+
+  it("기본 SEO 메타 태그들 이후에 projectConfig.headHtml 이 head 에 추가되어야 한다", () => {
+    const blocks: Block[] = [];
+
+    const projectConfig: ProjectConfig = {
+      title: "헤드 SEO 순서 테스트",
+      slug: "head-seo-order-test",
+      canvasPreset: "full",
+      seoTitle: "SEO 타이틀",
+      seoDescription: "SEO 설명",
+      headHtml: '<meta name="custom" content="custom-meta" />',
+    } as ProjectConfig;
+
+    const html = buildStaticHtml(blocks, projectConfig);
+    const headStart = html.indexOf("<head>");
+    const headEnd = html.indexOf("</head>");
+    const head = html.slice(headStart, headEnd);
+
+    const descriptionIndex = head.indexOf('meta name="description"');
+    const customIndex = head.indexOf('meta name="custom" content="custom-meta"');
+
+    expect(descriptionIndex).toBeGreaterThan(-1);
+    expect(customIndex).toBeGreaterThan(-1);
+    expect(customIndex).toBeGreaterThan(descriptionIndex);
+  });
+
+  it("SEO 필드 값에 특수 문자가 포함되어도 HTML 이 깨지지 않고 이스케이프되어야 한다", () => {
+    const blocks: Block[] = [];
+
+    const projectConfig: ProjectConfig = {
+      title: '기본 & "타이틀" <테스트>',
+      slug: "seo-escape-test",
+      canvasPreset: "full",
+      seoTitle: 'SEO & "타이틀" <테스트>',
+      seoDescription: '설명 & "디스크립션" <테스트>',
+    } as ProjectConfig;
+
+    const html = buildStaticHtml(blocks, projectConfig);
+
+    expect(html).toContain(
+      "<title>SEO &amp; &quot;타이틀&quot; &lt;테스트&gt;</title>",
+    );
+    expect(html).toContain(
+      'meta name="description" content="설명 &amp; &quot;디스크립션&quot; &lt;테스트&gt;"',
+    );
+    expect(html).toContain(
+      'meta property="og:title" content="SEO &amp; &quot;타이틀&quot; &lt;테스트&gt;"',
+    );
+  });
+
   it("폼 블록과 컨트롤러 필드 블록들은 정적 HTML에서도 폼 요소로 렌더되어야 한다", async () => {
     const blocks: Block[] = [
       {
@@ -1364,6 +1447,49 @@ describe("/api/export", () => {
       expect(html).toContain("지금 바로 행동을 유도하는 CTA 텍스트를 입력하세요.");
       expect(html).toContain("CTA 버튼");
     });
+
+    it("Footer 템플릿 섹션은 export HTML 의 마지막 섹션으로 렌더되고 푸터 텍스트를 포함해야 한다", async () => {
+      const sectionId = "footer_section_export";
+      const { blocks } = createFooterTemplateBlocks({ sectionId, createId: createIdFactory() });
+
+      const html = await exportTemplateHtml(blocks as Block[]);
+
+      expect(html).toContain("MyLanding");
+      expect(html).toContain("더 나은 웹사이트를 위한 최고의 선택.");
+      expect(html).toContain("서비스 소개");
+      expect(html).toContain("문의하기");
+      expect(html).toContain(" 2025 MyLanding.");
+
+      const lastSectionIndex = html.lastIndexOf("<section");
+      expect(lastSectionIndex).toBeGreaterThan(-1);
+      const lastSectionHtml = html.slice(lastSectionIndex);
+      expect(lastSectionHtml).toContain(" 2025 MyLanding.");
+    });
+
+    it("루트 버튼 내비게이션 링크는 Export HTML 에서 동일한 라벨과 href 로 렌더되어야 한다", async () => {
+      const blocks: Block[] = [
+        {
+          id: "nav_btn_1",
+          type: "button",
+          props: {
+            label: "요금제",
+            href: "/pricing",
+            align: "left",
+          },
+        } as any,
+      ];
+
+      const projectConfig: ProjectConfig = {
+        title: "내비게이션 링크 테스트",
+        slug: "nav-link-test",
+        canvasPreset: "full",
+      };
+
+      const html = buildStaticHtml(blocks, projectConfig);
+
+      expect(html).toContain('<a href="/pricing"');
+      expect(html).toContain(">요금제</a>");
+    });
   });
 
   describe("스타일 테스트", () => {
@@ -1609,7 +1735,7 @@ describe("/api/export", () => {
       expect(html).toContain("background-color:#00ff88");
     });
 
-    it("backgroundColorCustom 이 지정된 폼 블록은 정적 HTML에서 form 요소 배경색을 반영해야 한다", async () => {
+    it("backgroundColorCustom 이 지정된 폼 블록은 정적 HTML에서 form 요소 배경색을 반영하지 않아야 한다", async () => {
       const blocks: Block[] = [
         {
           id: "form_bg_custom",
@@ -1662,7 +1788,7 @@ describe("/api/export", () => {
 
       const html = await indexEntry!.async("string");
       expect(html).toContain("<form");
-      expect(html).toContain("background-color:#111111");
+      expect(html).not.toContain("background-color:#111111");
     });
 
     it("backgroundColorCustom 이 지정된 섹션 블록은 정적 HTML에서 섹션 요소 배경색을 인라인 스타일로 반영해야 한다", async () => {

tests/unit/EditorExportPreview.spec.tsx

@@ -0,0 +1,148 @@
+import { describe, it, expect, beforeEach, afterEach, vi } from "vitest";
+import { render, screen, cleanup, fireEvent, waitFor } from "@testing-library/react";
+import type { Block, ProjectConfig } from "@/features/editor/state/editorStore";
+import EditorPage from "@/app/editor/page";
+
+// EditorPage Export 미리보기 UX TDD
+// - 상단 메뉴에 "Export 미리보기" 항목이 노출되는지 검증한다.
+// - Export 미리보기 모달에서 "미리보기 새로고침" 클릭 시
+//   - /api/export/preview 엔드포인트를 호출하고,
+//   - 반환된 HTML 을 iframe srcdoc 으로 렌더하는지 확인한다.
+
+let mockState: any;
+
+beforeEach(() => {
+  const baseProjectConfig: ProjectConfig = {
+    title: "Export 미리보기 테스트",
+    slug: "export-preview-test",
+    canvasPreset: "full",
+  } as ProjectConfig;
+
+  mockState = {
+    blocks: [
+      {
+        id: "blk_text_1",
+        type: "text",
+        props: {
+          text: "Export 미리보기 본문",
+          align: "left",
+          size: "base",
+        },
+      },
+    ] as Block[],
+    projectConfig: baseProjectConfig,
+    selectedBlockId: null as string | null,
+    selectedListItemId: null as string | null,
+    undo: vi.fn(),
+    redo: vi.fn(),
+    removeBlock: vi.fn(),
+    duplicateBlock: vi.fn(),
+    selectBlock: vi.fn(),
+    selectListItem: vi.fn(),
+    replaceBlocks: vi.fn(),
+    reorderBlocks: vi.fn(),
+    moveBlock: vi.fn(),
+    addTextBlock: vi.fn(),
+    addButtonBlock: vi.fn(),
+    addImageBlock: vi.fn(),
+    addDividerBlock: vi.fn(),
+    addListBlock: vi.fn(),
+    addSectionBlock: vi.fn(),
+    addFormBlock: vi.fn(),
+    addFormInputBlock: vi.fn(),
+    addFormSelectBlock: vi.fn(),
+    addFormCheckboxBlock: vi.fn(),
+    addFormRadioBlock: vi.fn(),
+    addHeroTemplateSection: vi.fn(),
+    addFeaturesTemplateSection: vi.fn(),
+    addCtaTemplateSection: vi.fn(),
+    addFaqTemplateSection: vi.fn(),
+    addPricingTemplateSection: vi.fn(),
+    addTestimonialsTemplateSection: vi.fn(),
+    addBlogTemplateSection: vi.fn(),
+    addTeamTemplateSection: vi.fn(),
+    addFooterTemplateSection: vi.fn(),
+    updateBlock: vi.fn(),
+  };
+});
+
+afterEach(() => {
+  cleanup();
+  vi.unstubAllGlobals();
+});
+
+vi.mock("@/features/editor/state/editorStore", () => {
+  const useEditorStore = (selector: (state: any) => any) => selector(mockState);
+  (useEditorStore as any).getState = () => mockState;
+
+  return {
+    __esModule: true,
+    useEditorStore,
+  };
+});
+
+vi.mock("next/link", () => {
+  return {
+    __esModule: true,
+    default: ({ href, children }: any) => <a href={href}>{children}</a>,
+  };
+});
+
+describe("EditorPage - Export 미리보기", () => {
+  it("메뉴에서 Export 미리보기 항목을 클릭하면 Export 미리보기 모달이 열려야 한다", () => {
+    render(<EditorPage />);
+
+    const menuButton = screen.getByText("메뉴");
+    fireEvent.click(menuButton);
+
+    const previewMenuItem = screen.getByText("Export 미리보기");
+    fireEvent.click(previewMenuItem);
+
+    const modalTitle = screen.getByText("Export 미리보기");
+    expect(modalTitle).toBeTruthy();
+  });
+
+  it("Export 미리보기 새로고침 시 /api/export/preview 를 호출하고 iframe 에 HTML 을 렌더해야 한다", async () => {
+    const fetchMock = vi.fn().mockResolvedValue(
+      new Response(
+        "<!DOCTYPE html><html><head><title>Export 미리보기 테스트</title></head><body>Export 미리보기 본문</body></html>",
+        {
+          status: 200,
+          headers: { "Content-Type": "text/html; charset=utf-8" },
+        },
+      ),
+    );
+
+    vi.stubGlobal("fetch", fetchMock);
+
+    render(<EditorPage />);
+
+    const menuButton = screen.getByText("메뉴");
+    fireEvent.click(menuButton);
+
+    const previewMenuItem = screen.getByText("Export 미리보기");
+    fireEvent.click(previewMenuItem);
+
+    const refreshButton = screen.getByText("미리보기 새로고침");
+    fireEvent.click(refreshButton);
+
+    await waitFor(() => {
+      expect(fetchMock).toHaveBeenCalledTimes(1);
+    });
+
+    const [url, options] = fetchMock.mock.calls[0] as any;
+    expect(url).toBe("/api/export/preview");
+    expect(options.method).toBe("POST");
+    expect(options.headers["Content-Type"]).toBe("application/json");
+
+    const parsed = JSON.parse(options.body);
+    expect(Array.isArray(parsed.blocks)).toBe(true);
+    expect(parsed.blocks[0].id).toBe("blk_text_1");
+    expect(parsed.projectConfig.slug).toBe("export-preview-test");
+
+    const iframe = await screen.findByTestId("export-preview-frame");
+    const srcDoc = iframe.getAttribute("srcdoc") ?? "";
+    expect(srcDoc).toContain("Export 미리보기 테스트");
+    expect(srcDoc).toContain("Export 미리보기 본문");
+  });
+});

tests/unit/ProjectPropertiesPanel.seo.spec.tsx

@@ -0,0 +1,102 @@
+import { describe, it, expect, vi, beforeEach, afterEach } from "vitest";
+import { render, screen, fireEvent, cleanup } from "@testing-library/react";
+import { ProjectPropertiesPanel } from "@/app/editor/panels/ProjectPropertiesPanel";
+import type { ProjectConfig } from "@/features/editor/state/editorStore";
+
+let mockState: { projectConfig: ProjectConfig; updateProjectConfig: ReturnType<typeof vi.fn> };
+
+beforeEach(() => {
+  const baseConfig: ProjectConfig = {
+    title: "프로젝트",
+    slug: "project",
+    canvasPreset: "full",
+    canvasWidthPx: 1024,
+    canvasBgColorHex: "#0f172a",
+    bodyBgColorHex: "#020617",
+    headHtml: "",
+    trackingScript: "",
+    // SEO 필드는 아직 구현 전이지만, TDD 를 위해 기본값 형태만 지정해 둔다.
+    // 실제 타입 정의는 추후 15.1 구현에서 확장한다.
+  } as ProjectConfig;
+
+  mockState = {
+    projectConfig: baseConfig,
+    updateProjectConfig: vi.fn(),
+  };
+});
+
+afterEach(() => {
+  cleanup();
+});
+
+vi.mock("@/features/editor/state/editorStore", () => {
+  const useEditorStore = (selector: (state: any) => any) => selector(mockState);
+  return {
+    __esModule: true,
+    useEditorStore,
+  };
+});
+
+describe("ProjectPropertiesPanel SEO 메타", () => {
+  it("SEO 타이틀 입력을 변경하면 seoTitle 이 updateProjectConfig 로 전달되어야 한다", () => {
+    render(<ProjectPropertiesPanel />);
+
+    const input = screen.getByLabelText("SEO 타이틀") as HTMLInputElement;
+
+    fireEvent.change(input, { target: { value: "새 SEO 타이틀" } });
+
+    expect(mockState.updateProjectConfig).toHaveBeenCalledWith({ seoTitle: "새 SEO 타이틀" });
+  });
+
+  it("메타 디스크립션 입력을 변경하면 seoDescription 이 updateProjectConfig 로 전달되어야 한다", () => {
+    render(<ProjectPropertiesPanel />);
+
+    const textarea = screen.getByLabelText("메타 디스크립션") as HTMLTextAreaElement;
+
+    fireEvent.change(textarea, { target: { value: "SEO 설명" } });
+
+    expect(mockState.updateProjectConfig).toHaveBeenCalledWith({
+      seoDescription: "SEO 설명",
+    });
+  });
+
+  it("OG/Twitter 이미지 URL 입력을 변경하면 seoOgImageUrl 이 updateProjectConfig 로 전달되어야 한다", () => {
+    render(<ProjectPropertiesPanel />);
+
+    const input = screen.getByLabelText("OG/Twitter 이미지 URL") as HTMLInputElement;
+
+    fireEvent.change(input, { target: { value: "https://example.com/og.png" } });
+
+    expect(mockState.updateProjectConfig).toHaveBeenCalledWith({
+      seoOgImageUrl: "https://example.com/og.png",
+    });
+  });
+
+  it("Canonical URL 입력을 변경하면 seoCanonicalUrl 이 updateProjectConfig 로 전달되어야 한다", () => {
+    render(<ProjectPropertiesPanel />);
+
+    const input = screen.getByLabelText("Canonical URL") as HTMLInputElement;
+
+    fireEvent.change(input, { target: { value: "https://example.com/landing" } });
+
+    expect(mockState.updateProjectConfig).toHaveBeenCalledWith({
+      seoCanonicalUrl: "https://example.com/landing",
+    });
+  });
+
+  it("검색 노출 제어 체크박스를 토글하면 seoNoIndex 가 true 로 업데이트되어야 한다", () => {
+    render(<ProjectPropertiesPanel />);
+
+    const checkbox = screen.getByLabelText(
+      "검색 엔진에 노출하지 않기 (noindex)",
+    ) as HTMLInputElement;
+
+    expect(checkbox.checked).toBe(false);
+
+    fireEvent.click(checkbox);
+
+    expect(mockState.updateProjectConfig).toHaveBeenCalledWith({
+      seoNoIndex: true,
+    });
+  });
+});

tests/unit/PublicPageRendererFooter.spec.tsx

@@ -0,0 +1,33 @@
+import { describe, it, expect, afterEach } from "vitest";
+import { render, screen, cleanup } from "@testing-library/react";
+import { PublicPageRenderer } from "@/features/editor/components/PublicPageRenderer";
+import { createFooterTemplateBlocks } from "@/app/editor/templates/footerTemplate";
+import type { Block } from "@/features/editor/state/editorStore";
+
+// PublicPageRenderer 푸터 템플릿 TDD
+// - footerTemplate 로 생성한 섹션이 프리뷰에서 섹션/텍스트 구조로 올바르게 렌더되는지 검증한다.
+
+describe("PublicPageRenderer - 푸터 템플릿", () => {
+  afterEach(() => {
+    cleanup();
+  });
+
+  it("푸터 템플릿 섹션은 프리뷰에서 섹션과 푸터 텍스트들을 렌더해야 한다", () => {
+    const sectionId = "footer_preview_section";
+    let i = 0;
+    const createId = () => `footer_${++i}`;
+
+    const { blocks } = createFooterTemplateBlocks({ sectionId, createId });
+
+    render(<PublicPageRenderer blocks={blocks as Block[]} />);
+
+    const section = screen.getByTestId("preview-section");
+    expect(section.getAttribute("data-section-id")).toBe(sectionId);
+
+    expect(screen.getByText("MyLanding")).toBeTruthy();
+    expect(screen.getByText("더 나은 웹사이트를 위한 최고의 선택.")).toBeTruthy();
+    expect(screen.getByText(/서비스 소개/)).toBeTruthy();
+    expect(screen.getByText(/문의하기/)).toBeTruthy();
+    expect(screen.getByText(/© 2025 MyLanding\./)).toBeTruthy();
+  });
+});

tests/unit/TextListFormBackgroundControls.spec.tsx

@@ -2,7 +2,6 @@ import { describe, it, expect, vi } from "vitest";
 import { render, screen, fireEvent } from "@testing-library/react";
 import { TextPropertiesPanel } from "@/app/editor/panels/TextPropertiesPanel";
 import { ListPropertiesPanel } from "@/app/editor/panels/ListPropertiesPanel";
-import { FormControllerPanel } from "@/app/editor/forms/FormControllerPanel";
 import type { Block } from "@/features/editor/state/editorStore";
 
 // Text/List/Form 패널에 추가되는 블록 배경색(backgroundColorCustom) 컨트롤에 대한 최소 TDD
@@ -58,34 +57,4 @@ describe("Text/List/Form 패널 - 블록 배경색 컨트롤", () => {
       expect.objectContaining({ backgroundColorCustom: "#445566" }),
     );
   });
-
-  it("FormControllerPanel 에서 배경색 HEX 인풋 변경 시 updateBlock 이 backgroundColorCustom 으로 호출되어야 한다", () => {
-    const updateBlock = vi.fn();
-
-    const formBlock: Block = {
-      id: "form-1",
-      type: "form",
-      props: {
-        kind: "contact",
-        submitTarget: "internal",
-      } as any,
-    };
-
-    render(
-      <FormControllerPanel
-        block={formBlock}
-        blocks={[]}
-        selectedBlockId="form-1"
-        updateBlock={updateBlock}
-      />,
-    );
-
-    const hexInput = screen.getByLabelText("폼 배경색 HEX");
-    fireEvent.change(hexInput, { target: { value: "#778899" } });
-
-    expect(updateBlock).toHaveBeenCalledWith(
-      "form-1",
-      expect.objectContaining({ backgroundColorCustom: "#778899" }),
-    );
-  });
 });

tests/unit/formHelpers.spec.ts

@@ -411,10 +411,9 @@ describe("formHelpers.computeFormControllerPublicTokens", () => {
 		expect(checkboxField.groupLabelImageUrl).toBe("https://example.com/group.png");
 
 		expect(tokens.formClassName).toBe("space-y-3");
-		expect(tokens.formStyle.width).toBe("20em");
+		// FormBlock 은 이제 레이아웃/배경 스타일을 가지지 않는 순수 컨트롤러이므로,
-		expect(tokens.formStyle.marginTop).toBe("2em");
+		// formStyle 은 항상 빈 객체여야 한다.
-		expect(tokens.formStyle.marginBottom).toBe("2em");
+		expect(tokens.formStyle).toEqual({});
-		expect(tokens.formStyle.backgroundColor).toBe("#123456");
 
 		expect(tokens.submitLabel).toBe("컨트롤러 버튼");
 	});
@@ -509,7 +508,8 @@ describe("formHelpers.computeFormBlockExportTokens", () => {
 		expect(tokens.controllerFields[0].id).toBe("input-1");
 		expect(tokens.controllerFields[1].id).toBe("select-1");
 		expect(tokens.fallbackFields).toHaveLength(0);
-		expect(tokens.formStyleParts).toEqual(["background-color:#123456"]);
+		// FormBlock 은 Export 레이어에서도 컨테이너 배경/레이아웃 스타일을 가지지 않는다.
+		expect(tokens.formStyleParts).toEqual([]);
 	});
 
 	it("fieldIds 가 없고 fields 가 있을 때 fallbackFields 를 사용해야 한다", () => {