feat(desktop 0.1.5): show version + Check for updates in Settings (#12)

- Settings now shows 'Biz Connect for Desktop · Version x.y.z' with a Check for
  updates button (desktop only, feature-detected).
- preload exposes checkForUpdates(); main.js adds the check-updates IPC (returns
  available/current/dev/error) and, when a build finishes downloading, shows a
  Restart now / Later dialog instead of only the silent on-next-launch install.
- desktop version bumped 0.1.4 -> 0.1.5.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

desktop/main.js

@@ -35,6 +35,17 @@ ipcMain.on('get-install-info', (e) => {
 // on the next restart. No-op in dev (unpackaged).
 let autoUpdater = null;
 try { ({ autoUpdater } = require('electron-updater')); } catch (_) { /* not installed in dev */ }
+// #12: manual "Check for updates" from Settings. Returns the current status; the background updater
+// (configured in app.whenReady) downloads and prompts to restart when a build is ready.
+ipcMain.handle('check-updates', async () => {
+  const current = app.getVersion();
+  if (!app.isPackaged || !autoUpdater) return { status: 'dev', current };
+  try {
+    const r = await autoUpdater.checkForUpdates();
+    const v = r && r.updateInfo && r.updateInfo.version;
+    return (v && v !== current) ? { status: 'available', version: v, current } : { status: 'current', current };
+  } catch (e) { return { status: 'error', message: String((e && e.message) || e), current }; }
+});
 // Chat toast: sender/group avatar + message; clicking it raises the app and opens that chat.
 // Uses Electron's OWN Notification (native, no SnoreToast) whose 'click' event fires reliably.
 const APP_ID = 'com.bizgaze.connect.desktop';
@@ -205,6 +216,21 @@ app.whenReady().then(() => {
   app.on('activate', () => { if (BrowserWindow.getAllWindows().length === 0) createWindow(); });
   // Check for shell updates on launch, then every 6 hours. Only in packaged builds.
   if (app.isPackaged && autoUpdater) {
+    // When an update finishes downloading (auto or via the Settings "Check for updates"), offer a
+    // clear restart prompt instead of only the silent on-next-launch install.
+    let promptedForUpdate = false;
+    autoUpdater.on('update-downloaded', async (info) => {
+      if (promptedForUpdate) return; promptedForUpdate = true;
+      try {
+        const { dialog } = require('electron');
+        const res = await dialog.showMessageBox(win || undefined, {
+          type: 'info', buttons: ['Restart now', 'Later'], defaultId: 0, cancelId: 1,
+          title: 'Update ready', message: 'Biz Connect ' + ((info && info.version) || '') + ' is ready.',
+          detail: 'Restart the app to finish updating.',
+        });
+        if (res.response === 0) autoUpdater.quitAndInstall();
+      } catch (_) { /* fall back to install-on-next-launch */ }
+    });
     const check = () => autoUpdater.checkForUpdatesAndNotify().catch(() => {});
     check();
     setInterval(check, 6 * 60 * 60 * 1000);

desktop/package.json

@@ -1,6 +1,6 @@
 {
   "name": "biz-connect-desktop",
-  "version": "0.1.4",
+  "version": "0.1.5",
   "description": "Biz Connect technician desktop client — loads the Connect web UI with native screen capture",
   "author": {
     "name": "BizGaze",

desktop/preload.js

@@ -22,4 +22,7 @@ contextBridge.exposeInMainWorld('bizConnectNative', Object.freeze({
   // Native Windows toast with an inline reply box. Resolves to {text} (replied), {open} (clicked)
   // or null. Lets the user reply to a chat straight from the notification.
   replyNotify: (payload) => ipcRenderer.invoke('reply-notification', payload),
+  // Manual "Check for updates" from Settings. Resolves {status:'available'|'current'|'dev'|'error', version?}.
+  // On 'available' the shell downloads in the background and prompts to restart when ready.
+  checkForUpdates: () => ipcRenderer.invoke('check-updates'),
 }));