Add conference stage layouts for plenary and panel discussions.

Speakers get a full-screen spotlight with overlapping audience avatars; hosts can configure panels in the green room and switch layouts live.

Co-authored-by: Cursor <cursoragent@cursor.com>

app/Http/Controllers/Meet/MeetingRoomController.php

@@ -14,6 +14,7 @@ use App\Services\Meet\RecordingService;
 use App\Services\Meet\SecurityPolicyService;
 use App\Services\Meet\SessionService;
 use App\Services\Meet\SpaceService;
+use App\Services\Meet\StageLayoutService;
 use App\Services\Meet\TranscriptService;
 use App\Services\Meet\WebinarService;
 use Illuminate\Http\JsonResponse;
@@ -64,6 +65,7 @@ class MeetingRoomController extends Controller
         $webinars = app(WebinarService::class);
         $spaces = app(SpaceService::class);
         $isAudioOnly = $room->isAudioOnly();
+        $stageLayout = app(StageLayoutService::class);
 
         return view('meet.room.show', [
             'session' => $session,
@@ -86,6 +88,8 @@ class MeetingRoomController extends Controller
                 ? $spaces->canPublish($room, $participant)
                 : $webinars->canPublish($room, $participant),
             'isAttendee' => $participant->isAttendee() || $spaces->isListener($room, $participant),
+            'usesStageLayout' => $stageLayout->usesStageLayout($room),
+            'stageConfig' => $stageLayout->config($room),
         ]);
     }
 
@@ -241,7 +245,7 @@ class MeetingRoomController extends Controller
             ->limit(20)
             ->get();
 
-        return response()->json([
+        return response()->json(array_merge([
             'participants' => $session->participants->map(
                 fn ($p) => ParticipantPresenter::toArray($p, $avatars, $session->room->host_user_ref)
             ),
@@ -287,7 +291,7 @@ class MeetingRoomController extends Controller
                 'original_name' => $f->original_name,
                 'file_size' => $f->file_size,
             ]),
-        ]);
+        ], app(StageLayoutService::class)->config($session->room)));
     }
 
     public function startRecording(Request $request, Session $session): JsonResponse