refactor(core): enhance SDK structure and documentation

Co-authored-by: Qwen-Coder <qwen-coder@alibabacloud.com>

src/Sbp/Data/DigitalRuble/Notifications/PaymentDrNotificationData.php

@@ -1,11 +1,25 @@
 <?php
+/*
+// MODULE_CONTRACT: Defines the data structure for a Digital Ruble payment notification payload.
+// RESPONSIBILITY: To hold and type-safely represent the details of an incoming Digital Ruble payment event.
+// INPUTS: Raw array from a Digital Ruble payment webhook.
+// OUTPUTS: A structured object containing payment notification details.
+// LINKS: Sbp/Requests/DigitalRuble/Notifications/ParsePaymentDrNotification.php
+*/
 
 namespace Apoloz\AlfaBank\Sbp\Data\DigitalRuble\Notifications;
 
+// <SECTION name="module_imports" intent="Import the base Spatie Laravel Data class.">
+// <BELIEF_STATE "Extending `Spatie\LaravelData\Data` enables automatic casting from arrays and provides DTO benefits.">
 use Spatie\LaravelData\Data;
+// </SECTION>
 
+// <SECTION name="class_definition" intent="Define a DTO for Digital Ruble payment notification.">
+// <BELIEF_STATE "This DTO provides a clear, type-safe contract for Digital Ruble payment notifications, crucial for reliably processing incoming payment events.">
 class PaymentDrNotificationData extends Data
 {
+    // <SECTION name="constructor_properties" intent="Define the properties of a Digital Ruble payment notification.">
+    // <BELIEF_STATE "The constructor includes mandatory fields such as `command`, `payrrn`, `BatchId`, `TermNo`, `CreditDatePos`, and `merchantName`. Optional fields provide additional context like `uniQrId`, `operationId`, `status`, `amount`, `timestamp`, and `purpose`, essential for a comprehensive payment record.">
     public function __construct(
         public string $command,
         public string $payrrn,
@@ -20,4 +34,5 @@ class PaymentDrNotificationData extends Data
         public ?string $timestamp = null,
         public ?string $purpose = null,
     ) {}
+    // </SECTION>
 }