feat: add world map functionality and admin map management

- Added world map page with interactive marker display
- Implemented admin map management for marker CRUD operations
- Added map layers and markers seed data to database
- Integrated new routes for map functionality
- Updated database configuration for production environment
- Added documentation page route
- Enhanced package.json with required dependencies for map features

test-api-connection.js

@@ -0,0 +1,63 @@
+#!/usr/bin/env node
+
+import fetch from 'node-fetch';
+
+async function testAPIConnection() {
+    console.log('🧪 Testing API Connection...');
+    
+    const baseURL = 'https://vollidioten.ceraticsoft.de';
+    
+    try {
+        // Test basic API status
+        console.log('📡 Testing API status...');
+        const statusResponse = await fetch(`${baseURL}/api/status`);
+        if (statusResponse.ok) {
+            const statusData = await statusResponse.json();
+            console.log('✅ API Status:', statusData);
+        } else {
+            console.log('❌ API Status failed:', statusResponse.status);
+        }
+        
+        // Test map metadata endpoint
+        console.log('🗺️ Testing map metadata endpoint...');
+        const metadataResponse = await fetch(`${baseURL}/api/map/metadata`);
+        if (metadataResponse.ok) {
+            const metadata = await metadataResponse.json();
+            console.log('✅ Map metadata:', metadata);
+        } else {
+            console.log('⚠️ Map metadata not available (this is expected if map not assembled):', metadataResponse.status);
+        }
+        
+        // Test layers endpoint
+        console.log('📊 Testing layers endpoint...');
+        const layersResponse = await fetch(`${baseURL}/api/map/layers`);
+        if (layersResponse.ok) {
+            const layers = await layersResponse.json();
+            console.log('✅ Layers:', layers.length, 'layers found');
+        } else {
+            console.log('❌ Layers endpoint failed:', layersResponse.status);
+        }
+        
+        // Test markers endpoint
+        console.log('📍 Testing markers endpoint...');
+        const markersResponse = await fetch(`${baseURL}/api/map/markers/public`);
+        if (markersResponse.ok) {
+            const markers = await markersResponse.json();
+            console.log('✅ Markers:', markers.length, 'markers found');
+        } else {
+            console.log('❌ Markers endpoint failed:', markersResponse.status);
+        }
+        
+        console.log('\n🎉 API connection test completed!');
+        
+    } catch (error) {
+        console.error('❌ API connection test failed:', error.message);
+        console.log('\n💡 Troubleshooting tips:');
+        console.log('1. Check if the backend server is running');
+        console.log('2. Verify the API endpoints are accessible');
+        console.log('3. Check for CORS issues');
+        console.log('4. Ensure the database is connected');
+    }
+}
+
+testAPIConnection();