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>

app/Http/Controllers/Meet/AiController.php

@@ -52,7 +52,7 @@ class AiController extends Controller
             'meetings_upcoming' => Room::owned($owner)
                 ->where('organization_id', $organization->id)
                 ->where('status', 'scheduled')
-                ->where('starts_at', '>=', now())
+                ->where('scheduled_at', '>=', now())
                 ->count(),
             'recordings_total' => Recording::owned($owner)
                 ->whereHas('session.room', fn ($q) => $q->where('organization_id', $organization->id))