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-translations.js

@@ -0,0 +1,44 @@
+// Quick test script to validate translations
+const fs = require('fs');
+
+// Load and parse translations manually
+const translationsCode = fs.readFileSync('translations.js', 'utf8');
+
+// Extract just the translations object
+const translationsMatch = translationsCode.match(/const translations = ({[\s\S]*?});/);
+if (!translationsMatch) {
+    console.error('Could not parse translations');
+    process.exit(1);
+}
+
+const translations = eval(`(${translationsMatch[1]})`);
+
+// Test key translations exist
+const testKeys = [
+    'title', 'tagline', 'welcome-title', 'welcome-text',
+    'ai-teacher', 'scientific-explanation', 'type-thoughts-placeholder', 
+    'send-button', 'the-answer', 'reveal-answer', 'getting-answer',
+    'great-thinking-fallback', 'thinking-about-answer', 'hmm'
+];
+
+console.log('🧪 Testing translation completeness...\n');
+
+let allGood = true;
+
+testKeys.forEach(key => {
+    const enExists = translations.en[key] !== undefined;
+    const deExists = translations.de[key] !== undefined;
+    
+    if (!enExists || !deExists) {
+        console.log(`❌ Missing translation for '${key}': EN=${enExists}, DE=${deExists}`);
+        allGood = false;
+    } else {
+        console.log(`✅ '${key}': EN="${translations.en[key]}" | DE="${translations.de[key]}"`);
+    }
+});
+
+if (allGood) {
+    console.log('\n🎉 All translations complete!');
+} else {
+    console.log('\n⚠️ Some translations are missing');
+}