fix(locale): align all English MDX page links and add automated links validation test to prevent language drift

content/en/bohrtechnik.mdx

@@ -12,7 +12,7 @@ layout: "fullBleed"
   backgroundImage={{ url: '/assets/photos/DSC08653.JPG' }}
   alignment="center"
   ctaLabel="Request a project"
-  ctaHref="/en/kontakt"
+  ctaHref="/en/contact"
 />
 
 <div className="container px-4 max-w-7xl mx-auto py-16">
@@ -77,5 +77,5 @@ layout: "fullBleed"
   title="Looking for a trenchless solution?" 
   text="We would be happy to advise you on the possibilities of horizontal directional drilling for your project."
   buttonText="Contact us"
-  buttonLink="/en/kontakt"
+  buttonLink="/en/contact"
 />

content/en/glasfaser.mdx

@@ -12,7 +12,7 @@ layout: "fullBleed"
   backgroundImage={{ url: '/assets/photos/DSC01129.JPG' }}
   alignment="center"
   ctaLabel="Request a project"
-  ctaHref="/en/kontakt"
+  ctaHref="/en/contact"
 />
 
 <div className="container px-4 max-w-7xl mx-auto py-16">
@@ -75,5 +75,5 @@ layout: "fullBleed"
   title="Are you planning an FTTX expansion?" 
   text="We are happy to advise you on all aspects of FTTX and fiber optic expansion."
   buttonText="Contact us"
-  buttonLink="/en/kontakt"
+  buttonLink="/en/contact"
 />

content/en/kabeltiefbau.mdx

@@ -12,7 +12,7 @@ layout: "fullBleed"
   backgroundImage={{ url: '/assets/photos/DSC01123.JPG' }}
   alignment="center"
   ctaLabel="Request a project"
-  ctaHref="/en/kontakt"
+  ctaHref="/en/contact"
 />
 
 <div className="container px-4 max-w-7xl mx-auto py-16">
@@ -79,5 +79,5 @@ layout: "fullBleed"
   title="Do you have a specific project?" 
   text="We would be happy to advise you on all questions regarding cable civil engineering and line laying."
   buttonText="Contact us"
-  buttonLink="/en/kontakt"
+  buttonLink="/en/contact"
 />

content/en/karriere.mdx

@@ -100,6 +100,6 @@ layout: "fullBleed"
   title="Speculative Application (m/f/d)"
   description="Can you imagine taking on a long-term challenge in our company but can't find a suitable job offer? Apply speculatively."
   ctaLabel="To the contact form"
-  ctaHref="/en/kontakt"
+  ctaHref="/en/contact"
   theme="dark"
 />

content/en/kompetenzen.mdx

@@ -11,7 +11,7 @@ layout: "fullBleed"
   description="As a full-service partner in the field of cable civil engineering, we cover the entire spectrum of modern infrastructure projects."
   videoUrl="/assets/videos/web/hero-bohrung.mp4"
   linkText="Get in Touch"
-  linkHref="/en/kontakt"
+  linkHref="/en/contact"
   secondaryCtaLabel="View References"
   secondaryCtaHref="/en/#referenzen"
 />
@@ -20,7 +20,7 @@ layout: "fullBleed"
   badge="Core Competencies"
   title="Precision & Performance"
   ctaLabel="Request a project"
-  ctaHref="/en/kontakt"
+  ctaHref="/en/contact"
   items={[
     {
       title: "Cable Construction",

content/en/messen.mdx

@@ -11,7 +11,7 @@ layout: "fullBleed"
   description="Get to know the E-TIB Group at the leading industry trade fairs."
   videoUrl="/assets/videos/web/hero-bahnkreuzung.mp4"
   linkText="Get in Touch"
-  linkHref="/en/kontakt"
+  linkHref="/en/contact"
 />
 
 <div id="termine">

content/en/planung.mdx

@@ -12,7 +12,7 @@ layout: "fullBleed"
   backgroundImage={{ url: '/assets/photos/DJI_0048.JPG' }}
   alignment="center"
   ctaLabel="Request a project"
-  ctaHref="/en/kontakt"
+  ctaHref="/en/contact"
 />
 
 <div className="container px-4 max-w-7xl mx-auto py-16">
@@ -75,5 +75,5 @@ layout: "fullBleed"
   title="Do you need planning security?" 
   text="Let's talk about your project. We are at your side with our engineering knowledge."
   buttonText="Contact us"
-  buttonLink="/en/kontakt"
+  buttonLink="/en/contact"
 />

content/en/team.mdx

@@ -86,5 +86,5 @@ layout: "fullBleed"
   title="Become part of our team" 
   text="We are always looking for motivated talents for exciting infrastructure projects."
   buttonText="View open positions"
-  buttonLink="/en/karriere"
+  buttonLink="/en/career"
 />

content/en/ueber-uns.mdx

@@ -11,7 +11,7 @@ layout: "fullBleed"
   description="Since 2015, we have been growing continuously to meet the demands of the energy transition and digitalization. As a corporate group, we pool specialized expertise under one roof."
   videoUrl="/assets/videos/web/hero-bahnkreuzung.mp4"
   linkText="Open Positions"
-  linkHref="/en/karriere"
+  linkHref="/en/career"
   secondaryCtaLabel="Discover Company"
   secondaryCtaHref="#structure"
 />
@@ -128,5 +128,5 @@ layout: "fullBleed"
   title="Ready for Your Project?"
   description="We are always looking for new challenges and strong partners. Contact us for a non-binding consultation on your project."
   ctaLabel="Contact Us Now"
-  ctaHref="/en/kontakt"
+  ctaHref="/en/contact"
 />

content/en/vermessung.mdx

@@ -12,7 +12,7 @@ layout: "fullBleed"
   backgroundImage={{ url: '/assets/photos/DSC08653.JPG' }}
   alignment="center"
   ctaLabel="Request a project"
-  ctaHref="/en/kontakt"
+  ctaHref="/en/contact"
 />
 
 <div className="container px-4 max-w-7xl mx-auto py-16">
@@ -77,5 +77,5 @@ layout: "fullBleed"
   title="Are you facing high documentation requirements?" 
   text="Contact us for professional surveying and GIS services."
   buttonText="Contact us"
-  buttonLink="/en/kontakt"
+  buttonLink="/en/contact"
 />

tests/mdx-links.test.ts

@@ -0,0 +1,26 @@
+import { describe, it, expect } from 'vitest';
+import fs from 'fs';
+import path from 'path';
+
+describe('English MDX Content Links', () => {
+  it('should not contain German slug routes like /en/kontakt or /en/karriere', () => {
+    const enContentDir = path.join(process.cwd(), 'content', 'en');
+    const files = fs.readdirSync(enContentDir).filter(f => f.endsWith('.mdx'));
+
+    const forbiddenLinks = ['/en/kontakt', '/en/karriere'];
+    const infractions: string[] = [];
+
+    files.forEach(file => {
+      const filePath = path.join(enContentDir, file);
+      const content = fs.readFileSync(filePath, 'utf8');
+
+      forbiddenLinks.forEach(link => {
+        if (content.includes(link)) {
+          infractions.push(`${file} contains forbidden link "${link}"`);
+        }
+      });
+    });
+
+    expect(infractions).toEqual([]);
+  });
+});