Add all 7 payment methods to collect payment wizard

- cash, card, bank_transfer, wallet, online, cheque, other
- Each with distinct color and icon in a responsive 4-col grid
- Confirmation step uses PaymentMethod enum label() for display
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

app/Livewire/Receptionist/CollectPaymentWizard.php

@@ -78,7 +78,7 @@ public function rules(): array
             ],
             3 => [
                 'payment_amount_display' => 'required|numeric|min:0.01',
-                'payment_method' => 'required|in:cash,card,wallet',
+                'payment_method' => 'required|in:cash,card,bank_transfer,wallet,online,cheque,other',
                 'payment_notes' => 'nullable|string|max:500',
             ],
             default => [],