Improve conferences, guest entry, Afia, and cross-app scheduling.

Route guests through silent SSO to the Meet product page, fix Afia context
query, add conference green-room UX and copy, and extend service API for
Care/CRM/Invoice calendar integration.

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

resources/views/meet/join/denied.blade.php

@@ -7,7 +7,7 @@
                 </svg>
             </div>
             <h1 class="mt-6 text-2xl font-bold text-slate-900">Unable to join</h1>
-            <p class="mt-3 text-sm text-slate-600">{{ $reason ?? 'You do not have access to this meeting.' }}</p>
+            <p class="mt-3 text-sm text-slate-600">{{ $reason ?? 'You do not have access to this '.($room->isConference() ? 'conference' : 'meeting').'.' }}</p>
             <a href="{{ route('sso.connect', ['redirect' => route('meet.join', $room), 'interactive' => 1]) }}" class="btn-primary btn-primary-lg mt-8 inline-flex w-full items-center justify-center py-3.5 font-semibold">
                 Sign in with Ladill
             </a>