Add kiosk join/leave pages, waiting room, and meeting feedback.

Redesign public join flows on the Frontdesk kiosk template, enforce host
admission when waiting room is enabled, and collect star ratings after leave.

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

bootstrap/app.php

@@ -51,6 +51,9 @@ return Application::configure(basePath: dirname(__DIR__))
             \Illuminate\Support\Facades\Route::bind('registration', function (string $value) {
                 return \App\Models\WebinarRegistration::where('uuid', $value)->firstOrFail();
             });
+            \Illuminate\Support\Facades\Route::bind('participant', function (string $value) {
+                return \App\Models\Participant::where('uuid', $value)->firstOrFail();
+            });
         },
     )
     ->withMiddleware(function (Middleware $middleware): void {