feat(loyalty): remove paying with EnakPoint

EnakPoint can only be redeemed for vouchers now: it can no longer pay for
orders and is never cashed out (docs/enakgame-prd.md §3.2, EG-001,
EG-002). No order was ever paid with EnakPoint, so there is no data to
move.

Removed:
- POST /customer/wallet/payment-code, POST /customer/orders/:id/pay-with-points
  and GET /orders/:id/point-payment/preview, with their processors,
  repositories, services, handlers and tests.
- The point payment method type: paying, splitting and refunding with it,
  the outlet filter on the method list, and the system-method guard.
- points and payment_code on CreatePayment; points_used and point_value
  on payments; accepts_point_payment on the customer outlets.
- The outlet point_payment settings. A PUT that still sends them is
  rejected as an unknown field.
- The EnakPoint split in the payment method analytics.
- PAYMENT and PAYMENT_REFUND from the wallet type rules. Tests that used
  them as a generic EnakPoint debit use REWARD_REDEEM.
- The EnakPoint-paid part from the earning basis, which is
  subtotal − discount again.

Migration 000102 drops the trigger, the point methods and their index,
the payments columns, and the outlet settings, and restores the method
type CHECK without point. payments.payment_method_id is ON DELETE
RESTRICT, so it fails rather than lose a payment made with EnakPoint.

The integration docs list the removed endpoints and fields, and the
EnakPoint & EnakCoin PRD and tasks note what is superseded.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

docs/prd-point-coin.md

@@ -7,6 +7,14 @@ dengan EnakPoint, exchange EnakCoin → EnakPoint, transfer antar customer, keda
 saldo, PIN customer, pengaturan per outlet dan per organisasi, migrasi dari Token
 **Out of scope:** Penukaran reward, tier otomatis, eksekusi campaign rules (lihat §11)
 
+> **Catatan 2026-10-07:** F9 (Bayar Order dengan EnakPoint), bagian pembayaran dari K2,
+> dan bagian terkait (aturan kembalian/refund EnakPoint di K7, PIN untuk bayar dan kode
+> bayar di K8, payment method EnakPoint, ledger `PAYMENT` / `PAYMENT_REFUND`, endpoint
+> pembayaran di §9, dan bagian pembayaran fase 3 di §13) digantikan oleh
+> [`enakgame-prd.md`](./enakgame-prd.md) §3.2: EnakPoint hanya bisa ditukar ke voucher,
+> tidak bisa dipakai membayar dan tidak bisa dicairkan. Fitur tersebut sudah dihapus dari
+> backend (migrasi `000102`). Dokumen ini dibiarkan apa adanya sebagai riwayat keputusan.
+
 ---
 
 ## 1. Latar Belakang
@@ -389,6 +397,10 @@ beredar. Karena itu:
 
 ### F9 — Bayar Order dengan EnakPoint
 
+> **Dihapus 2026-10-07:** digantikan oleh [`enakgame-prd.md`](./enakgame-prd.md) §3.2
+> (EnakPoint hanya untuk voucher) dan sudah dihapus dari backend (migrasi `000102`);
+> lihat catatan di awal dokumen.
+
 **Payment method.** Setiap organisasi otomatis punya satu payment method sistem
 bernama **EnakPoint** dengan tipe baru `point` di `payment_methods`. Method ini tidak
 bisa dihapus atau diubah tipenya. Muncul di kasir hanya jika outlet mengaktifkan