Implement dark mode, bug report page, and schema dump

app/Mail/PaymentSubmittedMail.php

@@ -18,6 +18,12 @@ class PaymentSubmittedMail extends Mailable implements ShouldQueue
         public MembershipPayment $payment,
         public string $recipient // 'member' or 'cashier'
     ) {
+        $subject = $this->recipient === 'member'
+            ? 'Payment Submitted Successfully - Awaiting Verification'
+            : 'New Payment Submitted for Verification - ' . $this->payment->member->full_name;
+
+        // Set subject property for assertion compatibility
+        $this->subject($subject);
     }
 
     public function envelope(): Envelope