add DEV_MODE support to metadata generation and robots handling; update .gitignore and docker-compose for environment variables

app/layout.js

@@ -28,6 +28,23 @@ export async function generateMetadata() {
     },
   };
 
+  // Add noindex meta tag when DEV_MODE is TRUE
+  if (process.env.DEV_MODE === 'TRUE') {
+    baseMetadata.robots = {
+      index: false,
+      follow: false,
+      nocache: true,
+      googleBot: {
+        index: false,
+        follow: false,
+        noimageindex: true,
+        'max-video-preview': -1,
+        'max-image-preview': 'large',
+        'max-snippet': -1,
+      },
+    };
+  }
+
   // Add canonical URL only if we're not on the main domain and matchedCity domain is not nobat724.com
   if (canonicalUrl && (!matchedCity || matchedCity.domain !== 'nobat724.com')) {
     baseMetadata.alternates = {

app/robots.js

@@ -22,6 +22,17 @@ export default function robots() {
     const domain = getCurrentDomain();
     const baseUrl = getBaseUrl(domain);
 
+    // If DEV_MODE is TRUE, disallow all crawlers
+    if (process.env.DEV_MODE === 'TRUE') {
+        return {
+            rules: {
+                userAgent: '*',
+                disallow: '/',
+            },
+        };
+    }
+
+    // Normal behavior when DEV_MODE is FALSE or not set
     return {
         rules: {
             userAgent: '*',