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-database-connection.js

@@ -0,0 +1,55 @@
+const { db, init } = require('./backend/database');
+
+// Test database connection and map markers
+async function testDatabase() {
+    console.log('Testing database connection...');
+    
+    try {
+        // Initialize database
+        init();
+        
+        // Wait a moment for initialization
+        setTimeout(() => {
+            console.log('Testing map markers query...');
+            
+            // Test map markers query
+            db.all('SELECT * FROM map_markers', [], (err, rows) => {
+                if (err) {
+                    console.error('Error querying map markers:', err);
+                    return;
+                }
+                
+                console.log('Map markers found:', rows.length);
+                console.log('Markers:', rows);
+            });
+            
+            // Test map layers query
+            db.all('SELECT * FROM map_layers', [], (err, rows) => {
+                if (err) {
+                    console.error('Error querying map layers:', err);
+                    return;
+                }
+                
+                console.log('Map layers found:', rows.length);
+                console.log('Layers:', rows);
+            });
+            
+            // Test map metadata query
+            db.all('SELECT * FROM map_metadata', [], (err, rows) => {
+                if (err) {
+                    console.error('Error querying map metadata:', err);
+                    return;
+                }
+                
+                console.log('Map metadata found:', rows.length);
+                console.log('Metadata:', rows);
+            });
+            
+        }, 3000);
+        
+    } catch (error) {
+        console.error('Error initializing database:', error);
+    }
+}
+
+testDatabase();