reogranized app and added more headers

src/config.ts

@@ -0,0 +1,35 @@
+/**
+ * Configuration and environment variables
+ */
+
+export const config = {
+  api: {
+    key: process.env.API_KEY,
+    port: parseInt(process.env.PORT || '2424'),
+    host: process.env.HOST || '0.0.0.0',
+    version: '1.0.0'
+  },
+  
+  environment: {
+    nodeEnv: process.env.NODE_ENV || 'production',
+    isDevelopment: process.env.NODE_ENV === 'development'
+  },
+  
+  server: {
+    // Trust proxy settings for Kubernetes and common networks
+    trustProxy: [
+      '10.0.0.0/8',      // Private networks
+      '172.16.0.0/12',   // Docker/K8s networks
+      '192.168.0.0/16',  // Local networks
+      '127.0.0.1',       // Localhost
+      '::1'              // IPv6 localhost
+    ],
+    
+    cors: {
+      origin: true,
+      methods: ['GET', 'POST', 'OPTIONS']
+    },
+    
+    maxCachedResults: 1000
+  }
+};