feat: migrate Payload CMS to MDX and harden static infrastructure

tests/translation-links.test.ts

@@ -0,0 +1,46 @@
+import { describe, it, expect } from 'vitest';
+import fs from 'fs';
+import path from 'path';
+
+const DE_JSON = JSON.parse(
+  fs.readFileSync(path.resolve(__dirname, '../messages/de.json'), 'utf-8'),
+);
+const EN_JSON = JSON.parse(
+  fs.readFileSync(path.resolve(__dirname, '../messages/en.json'), 'utf-8'),
+);
+
+describe('Translation Link Parity', () => {
+  it('should ensure the German termsSlug points to an existing MDX page', () => {
+    const slug = DE_JSON.Footer.termsSlug;
+    expect(slug).toBeTruthy();
+
+    const pagePath = path.resolve(__dirname, `../content/pages/${slug}.mdx`);
+    const exists = fs.existsSync(pagePath);
+
+    expect(exists).toBe(true);
+  });
+
+  it('should ensure the English termsSlug points to an existing MDX page', () => {
+    const slug = EN_JSON.Footer.termsSlug;
+    expect(slug).toBeTruthy();
+
+    const pagePath = path.resolve(__dirname, `../content/pages/${slug}.mdx`);
+    const exists = fs.existsSync(pagePath);
+
+    expect(exists).toBe(true);
+  });
+
+  it('should ensure privacyPolicySlug points to an existing MDX page for DE', () => {
+    const slug = DE_JSON.Footer.privacyPolicySlug;
+    expect(slug).toBeTruthy();
+    const pagePath = path.resolve(__dirname, `../content/pages/${slug}.mdx`);
+    expect(fs.existsSync(pagePath)).toBe(true);
+  });
+
+  it('should ensure privacyPolicySlug points to an existing MDX page for EN', () => {
+    const slug = EN_JSON.Footer.privacyPolicySlug;
+    expect(slug).toBeTruthy();
+    const pagePath = path.resolve(__dirname, `../content/pages/${slug}.mdx`);
+    expect(fs.existsSync(pagePath)).toBe(true);
+  });
+});