feat: 完成 DOCX R4 元素级视觉门禁

建立 Chromium、Word 与 WPS 的可编辑内容、段落几何、页眉页脚、封面、媒体和逐页视觉比较链路。

支持封面独立分节、正文页码重启、主题页边距与横向纸张，并将自然分页差异降为诊断项。

修正代码块内边距和折叠表格单元格边框映射，14 套主题生产矩阵与六组布局视觉矩阵通过。

packages/docx-engine/scripts/verify-docx-acceptance.mjs

@@ -9,7 +9,9 @@ import {
 import {
   PandocDocxConverter,
   PandocRuntime,
-  inspectDocxAcceptance
+  createDocxMediaAcceptanceExpectation,
+  inspectDocxAcceptance,
+  resolveReferencePageOptions
 } from "@md-to-pdf/docx-engine";
 import { DOCX_STYLE_SLOT_NAMES } from "@md-to-pdf/docx-theme-engine";
 
@@ -49,6 +51,7 @@ function mediaResource(kind, ordinal, dimensions, altText, caption) {
     kindOrdinal: 1,
     altText,
     ...(caption ? { caption } : {}),
+    alignment: "center",
     displayWidthPx: dimensions.width,
     displayHeightPx: dimensions.height,
     captureX: 0,
@@ -115,6 +118,58 @@ function createThemeTokens(theme) {
 
 const technicalTheme = loadTheme("typora-like");
 const officialTheme = loadTheme("gov-red-standard");
+const coverTheme = loadTheme("formal-feasibility");
+const semanticDocument = {
+  schemaVersion: 1,
+  titlePolicy: {
+    metadataTitle: "emit",
+    firstBodyHeading: "keep"
+  },
+  regions: []
+};
+const coverSemanticDocument = {
+  schemaVersion: 1,
+  profile: "project-report",
+  titlePolicy: {
+    metadataTitle: "suppress",
+    firstBodyHeading: "keep"
+  },
+  regions: [
+    {
+      kind: "cover",
+      nodes: [
+        {
+          kind: "group",
+          role: "project-report-cover",
+          children: [
+            {
+              kind: "text",
+              role: "project-report-project-name",
+              text: "智慧园区建设项目"
+            },
+            {
+              kind: "text",
+              role: "project-report-title",
+              text: "可行性研究报告"
+            },
+            {
+              kind: "text",
+              role: "project-report-owner",
+              label: "建设单位：",
+              text: "示例建设集团"
+            }
+          ]
+        }
+      ],
+      section: {
+        headerFooter: "none",
+        pageNumber: "hidden",
+        breakAfter: "next-page",
+        followingPageNumberStart: 1
+      }
+    }
+  ]
+};
 const commonExpectation = {
   requiredText: [
     "可编辑的中文正文",
@@ -214,6 +269,18 @@ const landscapeLetterConfig = {
     startFrom: 3
   }
 };
+const coverA4Config = {
+  ...defaultExportConfig,
+  name: "可研封面 A4 纵向验收",
+  themeId: coverTheme.id,
+  pageDecorationsMode: "theme",
+  paper: {
+    ...defaultExportConfig.paper,
+    format: "A4",
+    orientation: "portrait",
+    marginMode: "theme"
+  }
+};
 
 const variants = [
   {
@@ -275,6 +342,41 @@ const variants = [
         }
       }
     }
+  },
+  {
+    id: "project-cover-a4-portrait",
+    theme: coverTheme,
+    exportConfig: coverA4Config,
+    semanticDocument: coverSemanticDocument,
+    expectation: {
+      ...commonExpectation,
+      id: "project-cover-a4-portrait",
+      requiredText: [
+        ...commonExpectation.requiredText,
+        "智慧园区建设项目",
+        "可行性研究报告"
+      ],
+      page: {
+        widthTwips: 11906,
+        heightTwips: 16838,
+        orientation: "portrait",
+        marginsTwips: {
+          top: 1417,
+          right: 1134,
+          bottom: 1417,
+          left: 1701
+        }
+      },
+      minimumSections: 2,
+      requireFirstSectionWithoutHeaderFooter: true,
+      finalPageNumberStart: 1,
+      requireSectionPagesField: true,
+      requiredParagraphStyleIds: [
+        "MdProjectReportProjectName",
+        "MdProjectReportTitle",
+        "MdProjectReportOwner"
+      ]
+    }
   }
 ];
 
@@ -299,33 +401,51 @@ fs.mkdirSync(outputDirectory, { recursive: true });
 
 const results = [];
 for (const variant of variants) {
+  const variantSemanticDocument =
+    variant.semanticDocument ?? semanticDocument;
+  const fileName = `${variant.id}.md`;
+  const metadata = {
+    title: "v0.6.0 DOCX 自动验收",
+    author: "Markdown PDF 导出器研发组",
+    subject: "Word 与 WPS 可编辑性验收",
+    keywords: ["DOCX", "Pandoc", "OOXML"],
+    language: "zh-CN"
+  };
+  const resolvedPage = resolveReferencePageOptions({
+    exportConfig: variant.exportConfig,
+    theme: variant.theme,
+    fileName,
+    metadata
+  });
+  const media = createMedia();
   const result = await converter.convert({
     markdown,
-    fileName: `${variant.id}.md`,
+    fileName,
     language: "zh-CN",
     exportConfig: variant.exportConfig,
     theme: variant.theme,
     themeTokens: createThemeTokens(variant.theme),
-    metadata: {
-      title: "v0.6.0 DOCX 自动验收",
-      author: "Markdown PDF 导出器研发组",
-      subject: "Word 与 WPS 可编辑性验收",
-      keywords: ["DOCX", "Pandoc", "OOXML"],
-      language: "zh-CN"
-    },
-    semanticDocument: {
-      schemaVersion: 1,
-      titlePolicy: {
-        metadataTitle: "emit",
-        firstBodyHeading: "keep"
-      },
-      regions: []
-    },
-    media: createMedia()
+    fonts: [],
+    metadata,
+    semanticDocument: variantSemanticDocument,
+    media
   });
   const report = inspectDocxAcceptance(
     result.docx,
-    variant.expectation
+    {
+      ...variant.expectation,
+      media: createDocxMediaAcceptanceExpectation(
+        media,
+        variant.expectation.page
+      ),
+      pageDecorations: {
+        exportConfig: {
+          header: resolvedPage.header,
+          footer: resolvedPage.footer
+        },
+        semanticDocument: variantSemanticDocument
+      }
+    }
   );
   const outputPath = path.join(outputDirectory, `${variant.id}.docx`);
   fs.writeFileSync(outputPath, result.docx);