fix: off-state colors, mobile audio route, iOS rail/PTR, in-place join, draggable bars (0.1.16/batch76)

Regressions I introduced, now fixed:
#8d Mic/Camera OFF went DIM — my new `.meet-ic.off` rule overrode the original RED.
    Scoped the lite style to the speaker button only; mic/cam OFF are red again.
#7  Guest "left the meeting" was unstyled (dark text on blue, no card): the card CSS was
    scoped to .guest-prejoin only. Shared with .guest-left. Rejoin no longer dead-ends —
    if the room is gone we say "This meeting has ended" and hide the button.

Reported:
#8d Speaker button no longer shows on desktop (devices already live under the mic ▾).
#8c/#8e Mobile speaker button now CYCLES Speaker → Earpiece → Bluetooth (icon follows the
    route); dropped the redundant "Audio devices" entry from the ⋮ menu.
#8a iOS gap under the bottom rail: the page rubber-band-bounced, exposing background beneath
    the fixed bar. overscroll-behavior:none + fixed body pins it.
#8b Pull-to-refresh now fires on iOS too (overscroll-behavior:contain on the lists so Safari's
    rubber band stops swallowing the gesture; scrollTop>2 tolerance for momentum).
#5  A meeting link no longer opens a whole new window: same-origin urls navigate the main
    window in the shell, and a link clicked in chat joins the meeting IN PLACE.

New observations:
1. The viewer's mic now starts MUTED on a screen session (and can actually be un/muted).
2. iOS lightbox close/download buttons moved below the Dynamic Island (safe-area insets).
3. Meeting chat: recipient picker moved to the BOTTOM next to the input; a private message
   auto-targets your reply back to that person; private vs everyone are visibly different
   (brand amber vs blue/neutral) and the compose area tints in private mode.
4. Meeting bar + screen-session bars are DRAGGABLE (position remembered) so they stop
   covering the shared screen.

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

desktop/main.js

@@ -273,10 +273,12 @@ function createWindow() {
   // no-login "Share my screen" option + sign-in. It redirects logged-in users straight to /home.
   win.loadURL(SERVER_URL + '/');
 
-  // Open target=_blank / external links in the system browser instead of a new Electron window.
+  // Links: EXTERNAL ones go to the system browser. OUR OWN urls (e.g. a meeting invite link clicked in
+  // chat) must NOT spawn a second app window (#5) — navigate the main window instead.
   win.webContents.setWindowOpenHandler(({ url }) => {
     if (!url.startsWith(SERVER_URL)) { shell.openExternal(url); return { action: 'deny' }; }
-    return { action: 'allow' };
+    try { if (win && !win.isDestroyed()) { if (win.isMinimized()) win.restore(); win.show(); win.focus(); win.loadURL(url); } } catch (_) {}
+    return { action: 'deny' };
   });
 
   // Spell-check menu. Two ways in:

desktop/package.json

@@ -1,6 +1,6 @@
 {
   "name": "biz-connect-desktop",
-  "version": "0.1.15",
+  "version": "0.1.16",
   "description": "Biz Connect technician desktop client — loads the Connect web UI with native screen capture",
   "author": {
     "name": "BizGaze",