text changes and remove infra folder

backend/server.js

@@ -1,5 +1,5 @@
 // Load environment-specific config
-const env = process.env.NODE_ENV || "dev";
+const env = process.env.NODE_ENV;
 const envFile = `.env.${env}`;
 
 require("dotenv").config({
@@ -46,7 +46,7 @@ const server = http.createServer(app);
 // Initialize Socket.io with CORS
 const io = new Server(server, {
   cors: {
-    origin: process.env.FRONTEND_URL || "http://localhost:3000",
+    origin: process.env.FRONTEND_URL,
     credentials: true,
     methods: ["GET", "POST"],
   },
@@ -93,7 +93,7 @@ app.use(
         frameSrc: ["'self'", "https://accounts.google.com"],
       },
     },
-  })
+  }),
 );
 
 // Cookie parser for CSRF
@@ -108,11 +108,11 @@ app.use("/api/", apiLogger);
 // CORS with security settings (must come BEFORE rate limiter to ensure headers on all responses)
 app.use(
   cors({
-    origin: process.env.FRONTEND_URL || "http://localhost:3000",
+    origin: process.env.FRONTEND_URL,
     credentials: true,
     optionsSuccessStatus: 200,
     exposedHeaders: ["X-CSRF-Token"],
-  })
+  }),
 );
 
 // General rate limiting for all routes
@@ -126,14 +126,14 @@ app.use(
       // Store raw body for webhook verification
       req.rawBody = buf;
     },
-  })
+  }),
 );
 app.use(
   bodyParser.urlencoded({
     extended: true,
     limit: "1mb",
     parameterLimit: 100, // Limit number of parameters
-  })
+  }),
 );
 
 // Apply input sanitization to all API routes (XSS prevention)
@@ -171,7 +171,7 @@ app.use("/api/upload", requireAlphaAccess, uploadRoutes);
 app.use(errorLogger);
 app.use(sanitizeError);
 
-const PORT = process.env.PORT || 5000;
+const PORT = process.env.PORT;
 
 const { checkPendingMigrations } = require("./utils/checkMigrations");
 
@@ -185,7 +185,7 @@ sequelize
     if (pendingMigrations.length > 0) {
       logger.error(
         `Found ${pendingMigrations.length} pending migration(s). Please run 'npm run db:migrate'`,
-        { pendingMigrations }
+        { pendingMigrations },
       );
       process.exit(1);
     }
@@ -203,12 +203,12 @@ sequelize
       // Fail fast - don't start server if email templates can't load
       if (env === "prod" || env === "production") {
         logger.error(
-          "Cannot start server without email services in production"
+          "Cannot start server without email services in production",
         );
         process.exit(1);
       } else {
         logger.warn(
-          "Email services failed to initialize - continuing in dev mode"
+          "Email services failed to initialize - continuing in dev mode",
         );
       }
     }