Remove localStorage uses

app.js

@@ -14,7 +14,6 @@ const drive = new Hyperdrive(store);
 await drive.ready();
 
 let swarm;
-let registeredUsers = JSON.parse(localStorage.getItem('registeredUsers')) || {};
 let peerCount = 0;
 let activeRooms = [];
 const eventEmitter = new EventEmitter();
@@ -26,7 +25,8 @@ let servePort;
 let config = {
   userName: '',
   userAvatar: '',
-  rooms: []
+  rooms: [],
+  registeredUsers: {}
 };
 
 // Store messages for each room
@@ -97,8 +97,8 @@ async function initialize() {
     config.rooms.forEach(room => {
       room.alias = room.alias || truncateHash(room.topic);
     });
-    for (let user in registeredUsers) {
-      registeredUsers[user] = updatePortInUrl(registeredUsers[user]);
+    for (let user in config.registeredUsers) {
+      config.registeredUsers[user] = updatePortInUrl(config.registeredUsers[user]);
     }
 
     renderRoomList(); // Render the room list with aliases
@@ -189,7 +189,7 @@ function registerUser(e) {
   e.preventDefault();
   const regUsername = document.querySelector('#reg-username').value;
 
-  if (registeredUsers[regUsername]) {
+  if (config.registeredUsers[regUsername]) {
     alert('Username already taken. Please choose another.');
     return;
   }
@@ -201,8 +201,8 @@ function registerUser(e) {
       const buffer = new Uint8Array(event.target.result);
       await drive.put(`/icons/${regUsername}.png`, buffer);
       config.userAvatar = `http://localhost:${servePort}/icons/${regUsername}.png`; // Set the correct URL
-      registeredUsers[regUsername] = `http://localhost:${servePort}/icons/${regUsername}.png`; // Use placeholder URL
-      localStorage.setItem('registeredUsers', JSON.stringify(registeredUsers));
+      config.registeredUsers[regUsername] = `http://localhost:${servePort}/icons/${regUsername}.png`; // Use placeholder URL
+      writeConfigToFile("./config.json");
       continueRegistration(regUsername);
     };
     reader.readAsArrayBuffer(avatarFile);