feat: live presence, delivery-tick sync, brand rollout, call fixes, desktop 0.1.3

Live presence (fixes stale in-call/status until refresh — impossible in apps):
- server broadcasts a user's status over the chat socket on connect/disconnect, call
  join/leave, and status change (chat.js broadcastPresence; signaling + routes hooks).
- client onPresence() updates the contact dot + open-chat header live.

Chat delivery ticks (#6): chat-list row now mirrors the thread (delivered→double grey,
read→blue) via a new 'with' field on the delivered relay + onChatRead/onChatDelivered.

Call fixes: no bogus 'host handed over' when a 1:1 call ends (leaveMeeting forced);
branded call-connecting + chat-thread loaders; header subtitle tracks live call state.

Notifications: web notify + sw.js use sender/group DP + brand icon (not old wordmark);
desktop shell drops Web Push so only the single native toast fires (#5).

Brand: master icon/splash/loaders wired everywhere (PWA/favicon/apple-touch/.ico),
branded login (blue + gold CTA), branded toasts (BZToast) on all pages, Electron splash.

Desktop: dev auto-targets localhost (packaged→prod); version 0.1.3 with new multi-size
icon; dropped unused node-notifier; removed home-mockup.html.

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

desktop/main.js

@@ -97,9 +97,26 @@ ipcMain.on('set-unread', (_e, { count, dataUrl } = {}) => {
   } catch (_) {}
 });
 
-const SERVER_URL = (process.env.SERVER_URL || 'https://remote.bizgaze.com').replace(/\/+$/, '');
+// Server origin: a PACKAGED build (the installer) points at production; running from source in dev
+// (`npm start`, unpackaged) defaults to the local server so you can test the shell against localhost
+// with no flags or separate "local" build. SERVER_URL always overrides (e.g. point dev at prod).
+const SERVER_URL = (process.env.SERVER_URL || (app.isPackaged ? 'https://remote.bizgaze.com' : 'http://localhost:8090')).replace(/\/+$/, '');
 
 let win;
+let splash;
+
+// 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.
+function createSplash() {
+  splash = new BrowserWindow({
+    width: 440, height: 440, frame: false, resizable: false, center: true,
+    backgroundColor: '#1F3B73', skipTaskbar: true, alwaysOnTop: true, show: true,
+    webPreferences: { contextIsolation: true, nodeIntegration: false },
+  });
+  splash.loadFile(path.join(__dirname, 'splash.html'));
+  splash.on('closed', () => { splash = null; });
+}
+function closeSplash() { if (splash) { try { splash.close(); } catch (_) {} splash = null; } }
 
 function createWindow() {
   win = new BrowserWindow({
@@ -108,7 +125,8 @@ function createWindow() {
     minWidth: 880,
     minHeight: 600,
     title: 'Biz Connect',
-    backgroundColor: '#0f1830',
+    backgroundColor: '#1F3B73',
+    show: false, // reveal only once the page is ready — the splash covers the gap
     webPreferences: {
       preload: path.join(__dirname, 'preload.js'),
       contextIsolation: true,
@@ -118,6 +136,12 @@ function createWindow() {
     },
   });
 
+  // Reveal the main window when its first paint is ready, and retire the splash. A fallback
+  // timer guarantees we never get stuck on the splash if the load stalls.
+  const reveal = () => { closeSplash(); if (win && !win.isVisible()) { win.show(); win.focus(); } };
+  win.once('ready-to-show', reveal);
+  setTimeout(reveal, 12000);
+
   // 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 + '/');
@@ -158,6 +182,7 @@ function configureSession() {
 
 app.whenReady().then(() => {
   configureSession();
+  createSplash();
   createWindow();
   Menu.setApplicationMenu(null); // hide the default menu bar; the web UI is the chrome
   app.on('activate', () => { if (BrowserWindow.getAllWindows().length === 0) createWindow(); });