updated the look and feel of the home page

lib/screens/transactions/transaction_model.dart

@@ -0,0 +1,153 @@
+import 'package:json_annotation/json_annotation.dart';
+import 'package:decimal/decimal.dart';
+
+part 'transaction_model.g.dart';
+
+/// JsonConverter for [Decimal] values — reads from [num] (int or double)
+/// in JSON and writes back as [num].
+class DecimalJsonConverter implements JsonConverter<Decimal, num> {
+  const DecimalJsonConverter();
+
+  @override
+  Decimal fromJson(num json) => Decimal.parse(json.toString());
+
+  @override
+  num toJson(Decimal object) => object.toDouble();
+}
+
+/// JsonConverter for [DateTime] values — reads from ISO‑8601 [String]
+/// and writes back as ISO‑8601 [String].
+class DateTimeJsonConverter implements JsonConverter<DateTime, String> {
+  const DateTimeJsonConverter();
+
+  @override
+  DateTime fromJson(String json) => DateTime.parse(json);
+
+  @override
+  String toJson(DateTime object) => object.toIso8601String();
+}
+
+/// JsonConverter for a list of key-value entries (additionalData).
+class AdditionalDataJsonConverter
+    implements JsonConverter<List<Map<String, dynamic>>?, List<dynamic>?> {
+  const AdditionalDataJsonConverter();
+
+  @override
+  List<Map<String, dynamic>>? fromJson(List<dynamic>? json) {
+    return json
+        ?.map((e) => Map<String, dynamic>.from(e as Map))
+        .toList();
+  }
+
+  @override
+  List<dynamic>? toJson(List<Map<String, dynamic>>? object) {
+    return object?.map((e) => e as dynamic).toList();
+  }
+}
+
+@DecimalJsonConverter()
+@DateTimeJsonConverter()
+@AdditionalDataJsonConverter()
+@JsonSerializable(explicitToJson: true)
+class TransactionModel {
+  final String? id;
+  final DateTime? createdAt;
+  final String userId;
+  final String trace;
+  final Decimal amount;
+  final Decimal charge;
+  final Decimal gatewayCharge;
+  final Decimal tax;
+  final Decimal totalAmount;
+  final String reference;
+  final String paymentProcessorLabel;
+  final String integrationProcessorLabel;
+  final String confirmationProcessorLabel;
+  final String providerLabel;
+  final String debitPhone;
+  final String debitCurrency;
+  final String debitRef;
+  final String? creditPhone;
+  final String? creditAccount;
+  final String? creditRef;
+  final String? billClientId;
+  final String billName;
+  final String paymentProcessorName;
+  final String? providerImage;
+  final String? paymentProcessorImage;
+  final String confirmationStatus;
+  final String paymentStatus;
+  final String integrationStatus;
+  final String pollingStatus;
+  final String? orderId;
+  final String? orderTrace;
+  final String? orderTransactionTrace;
+  final String? erpSalesRef;
+  final String? erpSalesPaymentRef;
+  final int workflowId;
+  final String? type;
+  final String? authType;
+  final String? responseCode;
+  final String? status;
+  final String? errorMessage;
+  final String? billProductName;
+  final String? creditName;
+  final String? creditEmail;
+  final String? productUid;
+  final String? targetUrl;
+  final List<Map<String, dynamic>>? additionalData;
+
+  const TransactionModel({
+    this.id,
+    this.createdAt,
+    required this.userId,
+    required this.trace,
+    required this.amount,
+    required this.charge,
+    required this.gatewayCharge,
+    required this.tax,
+    required this.totalAmount,
+    required this.reference,
+    required this.paymentProcessorLabel,
+    required this.integrationProcessorLabel,
+    required this.confirmationProcessorLabel,
+    required this.providerLabel,
+    required this.debitPhone,
+    required this.debitCurrency,
+    required this.debitRef,
+    this.creditPhone,
+    this.creditAccount,
+    this.creditRef,
+    this.billClientId,
+    required this.billName,
+    required this.paymentProcessorName,
+    this.providerImage,
+    this.paymentProcessorImage,
+    required this.confirmationStatus,
+    required this.paymentStatus,
+    required this.integrationStatus,
+    required this.pollingStatus,
+    this.orderId,
+    this.orderTrace,
+    this.orderTransactionTrace,
+    this.erpSalesRef,
+    this.erpSalesPaymentRef,
+    required this.workflowId,
+    this.type,
+    this.authType,
+    this.responseCode,
+    this.status,
+    this.errorMessage,
+    this.billProductName,
+    this.creditName,
+    this.creditEmail,
+    this.productUid,
+    this.targetUrl,
+    this.additionalData,
+  });
+
+  factory TransactionModel.fromJson(Map<String, dynamic> json) =>
+      _$TransactionModelFromJson(json);
+
+  Map<String, dynamic> toJson() => _$TransactionModelToJson(this);
+}