EnakPoint & EnakCoin wallet, PIN, outlet, order, community, reward

- Wallet EnakPoint & EnakCoin: beranda, riwayat, saldo kedaluwarsa, kode
  bayar, tukar EnakCoin, transfer
- PIN (buat, ganti, lupa), outlet, riwayat order, game spin
- Halaman community, webview, coming soon, dan ikon menu beranda baru
- Redesign Reward Saya: kartu tiket, filter chip, detail kode + QR
- Hapus customer point loader, menu, dan checkout lama
- Base URL ke enaklo-pos-api.altru.id

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

lib/domain/wallet/entities/exchange_entity.dart

@@ -0,0 +1,33 @@
+part of '../wallet.dart';
+
+@freezed
+abstract class ExchangePreview with _$ExchangePreview {
+  const factory ExchangePreview({
+    required int coinAmount,
+    required int pointAmount,
+    required int coinBalance,
+    required int coins,
+    required int points,
+    required bool valid,
+    String? reason,
+  }) = _ExchangePreview;
+}
+
+@freezed
+abstract class ExchangeResult with _$ExchangeResult {
+  const factory ExchangeResult({
+    required int coins,
+    required int points,
+    required int coinBalance,
+    required int pointBalance,
+    required List<WalletLot> lots,
+    required bool replayed,
+  }) = _ExchangeResult;
+}
+
+/// Bagian saldo dengan tanggal kedaluwarsanya sendiri.
+@freezed
+abstract class WalletLot with _$WalletLot {
+  const factory WalletLot({required int amount, DateTime? expiresAt}) =
+      _WalletLot;
+}