Bill transfer storage monthly with a 15-day grace period before deletion.

Files stay available while wallet renewals succeed each month. Failed renewals
keep files for TRANSFER_GRACE_PERIOD_DAYS (default 15) before automatic cleanup.

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

app/Console/Commands/ProcessTransferBillingCommand.php

@@ -0,0 +1,27 @@
+<?php
+
+namespace App\Console\Commands;
+
+use App\Services\Transfer\TransferBillingService;
+use Illuminate\Console\Command;
+
+class ProcessTransferBillingCommand extends Command
+{
+    protected $signature = 'transfer:process-billing';
+
+    protected $description = 'Renew monthly transfer storage billing and delete transfers past the grace period';
+
+    public function handle(TransferBillingService $billing): int
+    {
+        $result = $billing->processDueRenewals();
+
+        $this->info(sprintf(
+            'Transfer billing: %d renewed, %d entered grace, %d deleted.',
+            $result['renewed'],
+            $result['graced'],
+            $result['deleted'],
+        ));
+
+        return self::SUCCESS;
+    }
+}