Simplify recipient emails and add live upload progress on create.

Recipients always get the download link immediately when an email is set.
Large files upload in the background with per-file and overall progress bars.

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

app/Console/Commands/ProcessTransferBillingCommand.php

@@ -4,7 +4,6 @@ namespace App\Console\Commands;
 
 use App\Services\Transfer\TransferBillingService;
 use App\Services\Transfer\TransferOwnerMailService;
-use App\Services\Transfer\TransferRecipientMailService;
 use Illuminate\Console\Command;
 
 class ProcessTransferBillingCommand extends Command
@@ -15,19 +14,16 @@ class ProcessTransferBillingCommand extends Command
 
     public function handle(
         TransferBillingService $billing,
-        TransferRecipientMailService $recipients,
         TransferOwnerMailService $owners,
     ): int {
         $result = $billing->processDueRenewals();
-        $recipientEmails = $recipients->processDueMilestones();
         $ownerEmails = $owners->processGraceReminders();
 
         $this->info(sprintf(
-            'Transfer billing: %d renewed, %d entered grace, %d deleted, %d recipient reminders, %d owner grace reminders.',
+            'Transfer billing: %d renewed, %d entered grace, %d deleted, %d owner grace reminders.',
             $result['renewed'],
             $result['graced'],
             $result['deleted'],
-            $recipientEmails,
             $ownerEmails,
         ));