fix: 重建DOCX视觉一致性门禁

packages/document-visual-diff/tests/paragraph-layout.test.ts

@@ -166,6 +166,35 @@ describe("PDF 内容感知段落版式门禁", () => {
     );
   });
 
+  it("拒绝正文内容回流到独立封面页", () => {
+    const baseline = snapshot("baseline", [
+      [line("独立封面", 200)],
+      [line("第一章项目概述", 100)],
+    ]);
+    const candidate = snapshot("candidate", [
+      [line("独立封面", 200), line("第一章项目概述", 700)],
+      [],
+    ]);
+    const pageSemantics = [
+      { physicalPageNumber: 1, kind: "cover" as const },
+      { physicalPageNumber: 2, kind: "body-first" as const },
+    ];
+    const [result] = comparePdfEditableParagraphLayouts(
+      baseline,
+      candidate,
+      [expectation("第一章项目概述")],
+      pageSemantics,
+      pageSemantics,
+    );
+    expect(result?.status).toBe("failed");
+    expect(result?.issues).toContainEqual(
+      expect.objectContaining({
+        code: "COVER_LAYOUT_MISMATCH",
+        severity: "failure",
+      }),
+    );
+  });
+
   it("忽略 PDF 文本提取器失真的单行宽度但保留诊断值", () => {
     const baseline = snapshot("baseline", [
       [line("数据治理平台建设项目", 300, 224)],