Initial commit: KidsAI Explorer with complete functionality

- Complete KidsAI Explorer application
- Multi-language support (English/German)
- AI-powered educational guidance using OpenAI
- Interactive chat interface for children
- Proper placeholder translation fixes
- Mobile-responsive design
- Educational framework for critical thinking

test-fundamental-minimal.js

@@ -0,0 +1,30 @@
+// Simple test script for the next-fundamental endpoint
+const fetch = require('node-fetch');
+
+async function testNextFundamental() {
+    try {
+        console.log('Testing /api/next-fundamental endpoint...');
+        
+        const response = await fetch('http://localhost:3002/api/next-fundamental', {
+            method: 'POST',
+            headers: { 'Content-Type': 'application/json' },
+            body: JSON.stringify({
+                context: 'next_fundamental',
+                language: 'de',
+                sessionId: 'test-minimal-' + Date.now()
+            })
+        });
+        
+        if (!response.ok) {
+            throw new Error(`HTTP error! Status: ${response.status}`);
+        }
+        
+        const data = await response.json();
+        console.log('Response:', JSON.stringify(data, null, 2));
+        
+    } catch (error) {
+        console.error('Error:', error);
+    }
+}
+
+testNextFundamental();