Disable auto-suspend by default (opt-in via setting)

Both the scheduled command and the real-time listener now check
'auto_suspend_on_threshold' setting (default: false). Auto-suspend
will only fire if explicitly enabled in system_settings.

This prevents participants from being repeatedly suspended after
reactivation due to old attendance records in the lookback window.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

app/Console/Commands/SendAttendanceAlerts.php

@@ -20,6 +20,11 @@ class SendAttendanceAlerts extends Command
 
     public function handle(SettingsService $settings): int
     {
+        if (!(bool) $settings->get('auto_suspend_on_threshold', false)) {
+            $this->info('Auto-suspend is disabled (auto_suspend_on_threshold = false). Skipping.');
+            return self::SUCCESS;
+        }
+
         $threshold = (float) ($settings->get('min_attendance_percent', self::DEFAULT_MIN_ATTENDANCE_PERCENT));
 
         $participants = Participant::where('status', 'active')->get();

app/Domain/Attendance/Listeners/SuspendOnThreshold.php

@@ -4,6 +4,7 @@
 
 use App\Domain\Attendance\Events\AttendanceThresholdBreached;
 use App\Domain\Participant\Services\ParticipantService;
+use App\Domain\Shared\Services\SettingsService;
 use Illuminate\Contracts\Queue\ShouldQueue;
 use Illuminate\Support\Facades\Log;
 
@@ -11,11 +12,16 @@ class SuspendOnThreshold implements ShouldQueue
 {
     public function __construct(
         private ParticipantService $participantService,
+        private SettingsService $settings,
     ) {}
 
     public function handle(AttendanceThresholdBreached $event): void
     {
         try {
+            if (!(bool) $this->settings->get('auto_suspend_on_threshold', false)) {
+                return;
+            }
+
             $participant = $event->participant;
 
             if ($participant->status === 'suspended' || $participant->status === 'blacklisted') {