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/failures/wallet_failure.dart

@@ -0,0 +1,54 @@
+part of '../wallet.dart';
+
+@freezed
+sealed class WalletFailure with _$WalletFailure {
+  const WalletFailure._();
+
+  /// Gagal di level transport (jaringan, timeout, parsing).
+  const factory WalletFailure.serverError(ApiFailure failure) = _ServerError;
+  const factory WalletFailure.unexpectedError() = _UnexpectedError;
+  const factory WalletFailure.unauthorized() = _Unauthorized;
+
+  /// `303`, `310`: request tidak lengkap / salah format.
+  const factory WalletFailure.invalidRequest() = _InvalidRequest;
+
+  /// `304`: ditolak aturan bisnis. [cause] berbahasa Inggris, jangan ditampilkan
+  /// mentah ke customer.
+  const factory WalletFailure.rejected(String cause) = _Rejected;
+
+  /// `404`.
+  const factory WalletFailure.notFound() = _NotFound;
+
+  /// `429`: minta OTP terlalu cepat.
+  const factory WalletFailure.tooManyRequests(int retryAfterSeconds) =
+      _TooManyRequests;
+
+  /// `900`.
+  const factory WalletFailure.internalError() = _InternalError;
+
+  const factory WalletFailure.pinNotSet() = _PinNotSet;
+  const factory WalletFailure.pinInvalid(int? remainingAttempts) = _PinInvalid;
+  const factory WalletFailure.pinLocked(DateTime? lockedUntil) = _PinLocked;
+  const factory WalletFailure.transferBlocked(DateTime? transferBlockedUntil) =
+      _TransferBlocked;
+
+  bool get isPinError => maybeMap(
+    pinNotSet: (_) => true,
+    pinInvalid: (_) => true,
+    pinLocked: (_) => true,
+    transferBlocked: (_) => true,
+    orElse: () => false,
+  );
+
+  /// Request mungkin tidak sampai / jawaban tidak diterima, sehingga hasilnya
+  /// tidak diketahui. Hanya pada kondisi ini `Idempotency-Key` dipakai ulang.
+  bool get isNetworkError => maybeMap(
+    serverError: (value) => value.failure.maybeMap(
+      connectionError: (_) => true,
+      connectionTimeout: (_) => true,
+      serverError: (e) => e.statusCode == 0,
+      orElse: () => false,
+    ),
+    orElse: () => false,
+  );
+}