:drunk: Add call overlay

lib/pods/call.dart

@@ -215,6 +215,7 @@ class CallNotifier extends _$CallNotifier {
   }
 
   String? _roomId;
+  String? get roomId => _roomId;
 
   Future<void> joinRoom(String roomId) async {
     _roomId = roomId;

lib/screens/chat/call.dart

@@ -42,9 +42,32 @@ class CallScreen extends HookConsumerWidget {
       appBar: AppBar(
         leading: PageBackButton(
           onWillPop: () {
-            callNotifier.disconnect().then((_) {
-              callNotifier.dispose();
-            });
+            showDialog<void>(
+              context: context,
+              builder: (context) {
+                return AlertDialog(
+                  content: const Text(
+                    'Do you want to leave the call or leave it in background?',
+                  ),
+                  actions: [
+                    TextButton(
+                      onPressed: () {
+                        Navigator.of(context).pop();
+                      },
+                      child: const Text('In Background'),
+                    ),
+                    TextButton(
+                      onPressed: () async {
+                        Navigator.of(context).pop();
+                        await callNotifier.disconnect();
+                        callNotifier.dispose();
+                      },
+                      child: const Text('Leave'),
+                    ),
+                  ],
+                );
+              },
+            );
           },
         ),
         title: Column(

lib/widgets/app_scaffold.dart

@@ -160,7 +160,12 @@ class AppScaffold extends StatelessWidget {
                     ? content
                     : AppBackground(isRoot: true, child: content),
           ),
-          const _GlobalCallOverlay(),
+          Positioned(
+            left: 16,
+            right: 16,
+            bottom: 8,
+            child: const _GlobalCallOverlay(),
+          ),
         ],
       ),
       appBar: appBar,
@@ -211,13 +216,8 @@ class _GlobalCallOverlay extends HookConsumerWidget {
     final modalRoute = ModalRoute.of(context);
     final isOnCallScreen = modalRoute?.settings.name?.contains('call') ?? false;
     // You may want to store roomId in callState for more robust navigation
-    final roomId =
-        (modalRoute?.settings.arguments is Map &&
-                (modalRoute!.settings.arguments as Map).containsKey('roomId'))
-            ? (modalRoute.settings.arguments as Map)['roomId'] as String
-            : null;
-    if (callState.isConnected && !isOnCallScreen && roomId != null) {
-      return CallOverlayBar(roomId: roomId);
+    if (callState.isConnected && !isOnCallScreen) {
+      return CallOverlayBar();
     }
     return const SizedBox.shrink();
   }

lib/widgets/chat/call_overlay.dart

@@ -6,12 +6,12 @@ import 'package:island/route.gr.dart';
 
 /// A floating bar that appears when user is in a call but not on the call screen.
 class CallOverlayBar extends HookConsumerWidget {
-  final String roomId;
-  const CallOverlayBar({super.key, required this.roomId});
+  const CallOverlayBar({super.key});
 
   @override
   Widget build(BuildContext context, WidgetRef ref) {
     final callState = ref.watch(callNotifierProvider);
+    final callNotifier = ref.read(callNotifierProvider.notifier);
     // Only show if connected and not on the call screen
     if (!callState.isConnected) return const SizedBox.shrink();
 
@@ -21,7 +21,8 @@ class CallOverlayBar extends HookConsumerWidget {
       bottom: 32,
       child: GestureDetector(
         onTap: () {
-          context.router.push(CallRoute(roomId: roomId));
+          if (callNotifier.roomId == null) return;
+          context.router.push(CallRoute(roomId: callNotifier.roomId!));
         },
         child: Material(
           elevation: 8,
@@ -38,11 +39,19 @@ class CallOverlayBar extends HookConsumerWidget {
                     const SizedBox(width: 12),
                     const Text(
                       'In call',
-                      style: TextStyle(color: Colors.white, fontWeight: FontWeight.bold, fontSize: 16),
+                      style: TextStyle(
+                        color: Colors.white,
+                        fontWeight: FontWeight.bold,
+                        fontSize: 16,
+                      ),
                     ),
                   ],
                 ),
-                const Icon(Icons.arrow_forward_ios, color: Colors.white, size: 18),
+                const Icon(
+                  Icons.arrow_forward_ios,
+                  color: Colors.white,
+                  size: 18,
+                ),
               ],
             ),
           ),