periodic update check

main.js

@@ -2,6 +2,7 @@ const { app, BrowserWindow, session, desktopCapturer, ipcMain, clipboard } = req
 const { autoUpdater } = require('electron-updater');
 const path = require('path');
 const packageJson = require('./package.json');
+const PERIODIC_UPDATE_CHECK_INTERVAL_MS = 1 * 60 * 1000;
 
 const updateState = {
     status: 'idle', // idle | checking | available | downloading | downloaded | installing | not-available | error
@@ -25,6 +26,7 @@ function isNewerVersionAvailable(info) {
 
 let updateCheckInProgress = false;
 let installInProgress = false;
+let periodicUpdateTimer = null;
 
 function resolveBackendUrl() {
     const configuredUrl = (process.env.CHATTZ_URL || process.env.APP_BASE_URL || '').trim();
@@ -124,6 +126,16 @@ function installDownloadedUpdate() {
     }, 15000);
 }
 
+function startPeriodicUpdateChecks() {
+    if (periodicUpdateTimer || !app.isPackaged) {
+        return;
+    }
+
+    periodicUpdateTimer = setInterval(() => {
+        void runUpdateCheck('periodic');
+    }, PERIODIC_UPDATE_CHECK_INTERVAL_MS);
+}
+
 function createWindow() {
     const sess = session.fromPartition('persist:chattz');
     const backendUrl = resolveBackendUrl();
@@ -270,6 +282,7 @@ app.whenReady().then(() => {
     setTimeout(() => {
         void runUpdateCheck('startup');
     }, 5000);
+    startPeriodicUpdateChecks();
 
     app.on('activate', () => {
         if (BrowserWindow.getAllWindows().length === 0) {
@@ -284,6 +297,13 @@ app.on('window-all-closed', () => {
     }
 });
 
+app.on('before-quit', () => {
+    if (periodicUpdateTimer) {
+        clearInterval(periodicUpdateTimer);
+        periodicUpdateTimer = null;
+    }
+});
+
 function safeOrigin(value) {
     try {
         return new URL(value).origin;