feat: retard proof QR code

lib/screens/companion_remote/pairing_screen.dart

@@ -143,8 +143,9 @@ class _PairingScreenState extends State<PairingScreen> {
     if (data == _lastScannedCode) return;
     _lastScannedCode = data;
 
-    // New format: ip|port|sessionId|pin (4 parts separated by pipe)
-    final parts = data.split('|');
+    // Strip URL wrapper if present (e.g. "https://plezy.app/scan#ip|port|sid|pin")
+    final payload = data.contains('#') ? data.split('#').last : data;
+    final parts = payload.split('|');
     if (parts.length == 4) {
       final ip = parts.first;
       final port = parts[1];

lib/widgets/companion_remote/remote_session_dialog.dart

@@ -123,8 +123,8 @@ class _RemoteSessionDialogState extends State<RemoteSessionDialog> {
         final ip = addressParts.first;
         final port = addressParts[1];
 
-        // New QR format: ip|port|sessionId|pin (using pipe separator)
-        final qrData = '$ip|$port|${session.sessionId}|${session.pin}';
+        // URL-wrapped QR format so external scanners open a real webpage
+        final qrData = 'https://plezy.app/scan#$ip|$port|${session.sessionId}|${session.pin}';
 
         return Dialog(
           child: ConstrainedBox(