feat: implement Dynamic Data Binding system and tags registry

tests/waasEngine.test.ts

@@ -96,4 +96,19 @@ describe('WaaS Engine Core Unit Tests', () => {
     const matchSpecific = resolveTemplate(templates, 'header', { url: '/landing', routeType: 'singular', entityId: 'landing_1' });
     expect(matchSpecific?.id).toBe('header-custom-page');
   });
+
+  it('7. Should correctly resolve dynamic data tags like {{site.siteName}}', async () => {
+    const { resolveDynamicBinding } = await import('../src/utils/dynamicDataBinding');
+    
+    const context = {
+      site: { siteName: 'Test Agency Pro', contactEmail: 'info@test.de' },
+      post: { title: 'Mein erster Post' }
+    };
+
+    const resolvedTitle = resolveDynamicBinding('Willkommen bei {{site.siteName}}', context);
+    expect(resolvedTitle).toBe('Willkommen bei Test Agency Pro');
+
+    const resolvedPost = resolveDynamicBinding('Artikel: {{post.title}}', context);
+    expect(resolvedPost).toBe('Artikel: Mein erster Post');
+  });
 });