Fix Events mail calendar sync when virtual sessions lack ids.

Generate session ids before upserting and fall back to the main event date so August events reach Mail calendar.

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

app/Services/Events/EventMailCalendarSyncService.php

@@ -9,6 +9,7 @@ use App\Services\Integrations\MailCalendarClient;
 use Carbon\CarbonInterface;
 use Illuminate\Support\Carbon;
 use Illuminate\Support\Facades\Log;
+use Illuminate\Support\Str;
 
 class EventMailCalendarSyncService
 {
@@ -91,7 +92,9 @@ class EventMailCalendarSyncService
                 }
             }
 
-            if ($format === 'hybrid' && filled($content['starts_at'] ?? null)) {
+            if ($entries === [] && filled($content['starts_at'] ?? null)) {
+                $entries[] = $this->mainEventEntry($event, $content);
+            } elseif ($format === 'hybrid' && filled($content['starts_at'] ?? null)) {
                 $entries[] = $this->mainEventEntry($event, $content, ' (in person)');
             }
 
@@ -114,7 +117,7 @@ class EventMailCalendarSyncService
     {
         $sessionId = trim((string) ($session['id'] ?? ''));
         if ($sessionId === '') {
-            return null;
+            $sessionId = 'vs-'.Str::lower(Str::random(12));
         }
 
         $starts = $this->parseDate($session['scheduled_at'] ?? $content['starts_at'] ?? null);