feat: 完善 Mermaid 配置与预览缩放

apps/web/tests/mermaid-config.test.ts

@@ -1,4 +1,5 @@
 import { describe, expect, it } from "vitest";
+import { defaultExportConfig } from "@md-to-pdf/core";
 import {
   createMermaidSiteConfig,
   MERMAID_SECURE_CONFIG_KEYS
@@ -6,7 +7,7 @@ import {
 
 describe("Mermaid 站点配置", () => {
   it("默认使用 default 主题和 classic 外观", () => {
-    const config = createMermaidSiteConfig();
+    const config = createMermaidSiteConfig(defaultExportConfig.mermaid);
     expect(config.theme).toBe("default");
     expect(config.look).toBe("classic");
     expect(config.securityLevel).toBe("strict");
@@ -29,9 +30,25 @@ describe("Mermaid 站点配置", () => {
   });
 
   it("每次创建独立的 secure 配置数组", () => {
-    const first = createMermaidSiteConfig();
-    const second = createMermaidSiteConfig();
+    const first = createMermaidSiteConfig(defaultExportConfig.mermaid);
+    const second = createMermaidSiteConfig(defaultExportConfig.mermaid);
     expect(first.secure).toEqual(second.secure);
     expect(first.secure).not.toBe(second.secure);
   });
+
+  it("应用导出配置中的布局、主题、外观和字体", () => {
+    const config = createMermaidSiteConfig({
+      layout: "elk",
+      theme: "forest",
+      look: "handDrawn",
+      fontFamily: "Microsoft YaHei, sans-serif"
+    });
+
+    expect(config).toMatchObject({
+      layout: "elk",
+      theme: "forest",
+      look: "handDrawn",
+      fontFamily: "Microsoft YaHei, sans-serif"
+    });
+  });
 });