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/Services/Transfer/TransferService.php

@@ -48,22 +48,13 @@ class TransferService
             }
 
             $recipientEmail = trim((string) ($data['recipient_email'] ?? ''));
-            $recipientMilestones = app(TransferRecipientMailService::class)->normalizeMilestones(
-                is_array($data['email_milestones'] ?? null) ? $data['email_milestones'] : [],
-            );
-
-            if ($recipientEmail !== '' && $recipientMilestones === []) {
-                $recipientMilestones = app(TransferRecipientMailService::class)->normalizeMilestones(
-                    (array) config('transfer.default_recipient_email_milestones', ['created']),
-                );
-            }
 
             $transfer = Transfer::create([
                 'user_id' => $user->id,
                 'title' => trim((string) $data['title']),
                 'message' => isset($data['message']) ? trim((string) $data['message']) : null,
                 'recipient_email' => $recipientEmail !== '' ? $recipientEmail : null,
-                'recipient_email_milestones' => $recipientEmail !== '' ? $recipientMilestones : null,
+                'recipient_email_milestones' => $recipientEmail !== '' ? ['created'] : null,
                 'recipient_milestones_sent' => [],
                 'owner_milestones_sent' => [],
                 'password_hash' => $passwordHash,