fix(locale): align DE/EN component structures, fix dynamic language switcher slug mapping, and localize referenzen map

scripts/compare-mdx-parity.ts

@@ -0,0 +1,52 @@
+import fs from 'fs';
+import path from 'path';
+
+const CONTENT_DIR = path.join(process.cwd(), 'content');
+const deDir = path.join(CONTENT_DIR, 'de');
+const enDir = path.join(CONTENT_DIR, 'en');
+
+function extractComponents(filePath: string): string[] {
+  const content = fs.readFileSync(filePath, 'utf8');
+  // Match any tag starting with uppercase letter, e.g. <HomeHero or <InteractiveGermanyMap
+  const matches = content.match(/<[A-Z][a-zA-Z0-9]*/g) || [];
+  return matches.map(m => m.substring(1));
+}
+
+function checkParity() {
+  const deFiles = fs.readdirSync(deDir).filter(f => f.endsWith('.mdx'));
+  let hasErrors = false;
+
+  console.log('🔍 Checking MDX Component Parity between DE and EN...');
+
+  deFiles.forEach(file => {
+    const dePath = path.join(deDir, file);
+    const enPath = path.join(enDir, file);
+
+    if (!fs.existsSync(enPath)) {
+      console.log(`❌ Missing English file: ${file}`);
+      hasErrors = true;
+      return;
+    }
+
+    const deComponents = extractComponents(dePath);
+    const enComponents = extractComponents(enPath);
+
+    const deStr = deComponents.join(', ');
+    const enStr = enComponents.join(', ');
+
+    if (deStr !== enStr) {
+      console.log(`❌ Mismatch in ${file}:`);
+      console.log(`   DE components: [${deStr}]`);
+      console.log(`   EN components: [${enStr}]`);
+      hasErrors = true;
+    } else {
+      console.log(`✅ ${file} is in perfect parity.`);
+    }
+  });
+
+  if (!hasErrors) {
+    console.log('🎉 PERFECT PARITY DETECTED! All MDX components are identical.');
+  }
+}
+
+checkParity();