Improve Laravel deploy support and add .env import to deploy wizard.

Set Laravel DB env vars in Helm and Kubernetes, fix default port to 80 with a storage-aware entrypoint, and let users upload a .env file during deploy.

Co-authored-by: Cursor <cursoragent@cursor.com>

backend/src/kubernetes/kubernetes.service.ts

@@ -431,6 +431,16 @@ export class KubernetesService implements OnModuleInit {
       );
     }
 
+    if (
+      (ctx.runtime === AppRuntime.LARAVEL || ctx.runtime === AppRuntime.PHP) &&
+      ctx.databaseType !== DatabaseType.NONE
+    ) {
+      extraEnv.push(
+        { name: 'DB_DATABASE', value: ctx.appName.replace(/-/g, '_') },
+        { name: 'DB_USERNAME', valueFrom: { secretKeyRef: { name: `${ctx.appName}-db-secret`, key: 'username' } } },
+      );
+    }
+
     // Redis connection env vars
     if (ctx.enableRedis) {
       const redisName = `${ctx.appName}-redis`;