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/infrastructure/wallet/dto/exchange_dto.dart

@@ -0,0 +1,71 @@
+part of '../wallet_dtos.dart';
+
+@freezed
+abstract class ExchangePreviewDto with _$ExchangePreviewDto {
+  const factory ExchangePreviewDto({
+    @JsonKey(name: 'coin_amount') int? coinAmount,
+    @JsonKey(name: 'point_amount') int? pointAmount,
+    @JsonKey(name: 'coin_balance') int? coinBalance,
+    @JsonKey(name: 'coins') int? coins,
+    @JsonKey(name: 'points') int? points,
+    @JsonKey(name: 'valid') bool? valid,
+    @JsonKey(name: 'reason') String? reason,
+  }) = _ExchangePreviewDto;
+
+  factory ExchangePreviewDto.fromJson(Map<String, dynamic> json) =>
+      _$ExchangePreviewDtoFromJson(json);
+
+  const ExchangePreviewDto._();
+
+  ExchangePreview toDomain() => ExchangePreview(
+    coinAmount: coinAmount ?? 0,
+    pointAmount: pointAmount ?? 0,
+    coinBalance: coinBalance ?? 0,
+    coins: coins ?? 0,
+    points: points ?? 0,
+    valid: valid ?? false,
+    reason: reason,
+  );
+}
+
+@freezed
+abstract class ExchangeResultDto with _$ExchangeResultDto {
+  const factory ExchangeResultDto({
+    @JsonKey(name: 'coins') int? coins,
+    @JsonKey(name: 'points') int? points,
+    @JsonKey(name: 'coin_balance') int? coinBalance,
+    @JsonKey(name: 'point_balance') int? pointBalance,
+    @JsonKey(name: 'lots') List<WalletLotDto>? lots,
+    @JsonKey(name: 'replayed') bool? replayed,
+  }) = _ExchangeResultDto;
+
+  factory ExchangeResultDto.fromJson(Map<String, dynamic> json) =>
+      _$ExchangeResultDtoFromJson(json);
+
+  const ExchangeResultDto._();
+
+  ExchangeResult toDomain() => ExchangeResult(
+    coins: coins ?? 0,
+    points: points ?? 0,
+    coinBalance: coinBalance ?? 0,
+    pointBalance: pointBalance ?? 0,
+    lots: lots?.map((e) => e.toDomain()).toList() ?? [],
+    replayed: replayed ?? false,
+  );
+}
+
+@freezed
+abstract class WalletLotDto with _$WalletLotDto {
+  const factory WalletLotDto({
+    @JsonKey(name: 'amount') int? amount,
+    @JsonKey(name: 'expires_at') String? expiresAt,
+  }) = _WalletLotDto;
+
+  factory WalletLotDto.fromJson(Map<String, dynamic> json) =>
+      _$WalletLotDtoFromJson(json);
+
+  const WalletLotDto._();
+
+  WalletLot toDomain() =>
+      WalletLot(amount: amount ?? 0, expiresAt: _parseDateTime(expiresAt));
+}