feat: close-to-tray, meeting lobby, speaker select, link expiry, mobile RC touch (0.1.14/batch72)

General #1/#2 (closed-app notifications): the desktop app now CLOSES TO TRAY instead
of quitting, keeping its chat WebSocket alive so calls/messages still notify. Tray
icon + menu (Open / Quit), single-instance lock, first-close hint.

Guest #4 (lobby/admit): meetings can require the host to admit guests joining by link.
Setting on the schedule form ("Guests must be admitted by the host", default on) +
ad-hoc default. Guests wait on a "waiting to be let in" screen; the host gets an
Admit/Deny prompt; auto-cleanup on leave. Logged-in members always join directly.

Guest #5 (speaker): headphones/speaker output picker in the meeting (setSinkId),
remembered and applied to every tile.

Guest #3 (link expiry): guest link/token dies ~2h after a scheduled meeting's end
(HTTP 410) with a clear message; live-room links expire when the room empties.

RC #4 (mobile): touch→mouse mapping so a phone/tablet viewer can control (tap=click,
drag=move). Uses the same letterbox-correct coordinate mapping.

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

desktop/main.js

@@ -8,7 +8,7 @@
 //   - external links open in the user's browser, not inside the app
 //
 // Server origin is configurable so the same build works against prod or a dev server.
-const { app, BrowserWindow, session, desktopCapturer, shell, Menu, MenuItem, ipcMain, nativeImage, Notification } = require('electron');
+const { app, BrowserWindow, session, desktopCapturer, shell, Menu, MenuItem, Tray, ipcMain, nativeImage, Notification } = require('electron');
 const path = require('path');
 const fs = require('fs');
 const os = require('os');
@@ -190,6 +190,30 @@ const SERVER_URL = (process.env.SERVER_URL || (app.isPackaged ? 'https://remote.
 
 let win;
 let splash;
+let tray = null;
+let isQuitting = false; // true only during a real Quit (tray menu / before-quit) — otherwise close = hide to tray
+
+// Close-to-tray: closing the window HIDES it instead of quitting, so the app keeps running in the
+// background with its chat WebSocket alive. That's what lets call/message notifications still fire when
+// the window is "closed" (General #1/#2) — a fully-quit Electron app gets no push. The tray icon + menu
+// bring it back or quit for real.
+function createTray() {
+  if (tray) return;
+  try {
+    let img = nativeImage.createFromPath(path.join(__dirname, 'tray.ico'));
+    if (img.isEmpty()) img = nativeImage.createFromPath(path.join(process.resourcesPath || __dirname, 'tray.ico'));
+    tray = new Tray(img.isEmpty() ? nativeImage.createEmpty() : img);
+    tray.setToolTip('Biz Connect');
+    const showApp = () => { if (!win) return createWindow(); if (win.isMinimized()) win.restore(); win.show(); win.focus(); };
+    tray.setContextMenu(Menu.buildFromTemplate([
+      { label: 'Open Biz Connect', click: showApp },
+      { type: 'separator' },
+      { label: 'Quit', click: () => { isQuitting = true; app.quit(); } },
+    ]));
+    tray.on('click', showApp);       // single-click (Windows)
+    tray.on('double-click', showApp);
+  } catch (_) { tray = null; }
+}
 
 // A tiny brand-blue splash (splash.html) shown while the web UI loads, so launch feels instant
 // and on-brand instead of a blank window. Closed as soon as the main window is ready to show.
@@ -233,6 +257,18 @@ function createWindow() {
   win.once('ready-to-show', reveal);
   setTimeout(reveal, 12000);
 
+  // Close = hide to tray (keep running for notifications). First time, tell the user where it went.
+  let toldTray = false;
+  win.on('close', (e) => {
+    if (isQuitting) return; // real quit → let it close
+    e.preventDefault();
+    win.hide();
+    if (!toldTray && Notification.isSupported()) {
+      toldTray = true;
+      try { const n = new Notification({ title: 'Biz Connect is still running', body: 'It stays in the system tray so you keep getting calls & messages. Quit from the tray icon.' }); n.show(); } catch (_) {}
+    }
+  });
+
   // Open the landing page (same entry as the website): the "before login" screen with the
   // no-login "Share my screen" option + sign-in. It redirects logged-in users straight to /home.
   win.loadURL(SERVER_URL + '/');
@@ -376,12 +412,22 @@ function configureSession() {
   } catch (_) {}
 }
 
+// Single-instance: a tray app must not spawn a second copy. If another launch happens, focus the
+// existing window (restoring it from the tray) instead.
+if (!app.requestSingleInstanceLock()) {
+  app.quit();
+} else {
+  app.on('second-instance', () => { if (win) { if (win.isMinimized()) win.restore(); win.show(); win.focus(); } });
+}
+app.on('before-quit', () => { isQuitting = true; });
+
 app.whenReady().then(() => {
   configureSession();
   createSplash();
   createWindow();
+  createTray(); // keep the app reachable while its window is hidden to tray
   Menu.setApplicationMenu(null); // hide the default menu bar; the web UI is the chrome
-  app.on('activate', () => { if (BrowserWindow.getAllWindows().length === 0) createWindow(); });
+  app.on('activate', () => { if (BrowserWindow.getAllWindows().length === 0) createWindow(); else if (win) { win.show(); win.focus(); } });
   // Check for shell updates on launch, then every 6 hours. Only in packaged builds.
   if (app.isPackaged && autoUpdater) {
     // #3: surface update progress to the web UI so the user can SEE an update is downloading /
@@ -405,4 +451,6 @@ app.whenReady().then(() => {
   }
 });
 
-app.on('window-all-closed', () => { if (process.platform !== 'darwin') app.quit(); });
+// With close-to-tray the window is HIDDEN, not destroyed, so this normally won't fire while the app is
+// meant to keep running. Only quit here if we're actually quitting (belt-and-braces).
+app.on('window-all-closed', () => { if (isQuitting && process.platform !== 'darwin') app.quit(); });

desktop/package.json

@@ -1,6 +1,6 @@
 {
   "name": "biz-connect-desktop",
-  "version": "0.1.13",
+  "version": "0.1.14",
   "description": "Biz Connect technician desktop client — loads the Connect web UI with native screen capture",
   "author": {
     "name": "BizGaze",