refactor(core): enhance SDK structure and documentation

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

src/Data/NominalAccounts/Deals/DealPayoffData.php

@@ -1,11 +1,25 @@
 <?php
+/*
+// MODULE_CONTRACT: Defines the data structure for a single payoff within a deal.
+// RESPONSIBILITY: To hold and type-safely represent a specific payment made as part of a deal.
+// INPUTS: Raw JSON object from the API response.
+// OUTPUTS: A structured object containing deal payoff details.
+// LINKS: Requests/NominalAccounts/Deals/GetDealPayoffsRequest.php
+*/
 
 namespace Apoloz\AlfaBank\Data\NominalAccounts\Deals;
 
+// <SECTION name="module_imports" intent="Import the base Spatie Laravel Data class.">
+// <BELIEF_STATE "Extending `Spatie\LaravelData\Data` enables automatic casting from JSON and provides other DTO benefits.">
 use Spatie\LaravelData\Data;
+// </SECTION>
 
+// <SECTION name="class_definition" intent="Define a DTO for a payoff associated with a deal.">
+// <BELIEF_STATE "This DTO provides a clear, type-safe contract for individual payment records related to a deal, crucial for tracking financial flows within deals.">
 class DealPayoffData extends Data
 {
+    // <SECTION name="constructor_properties" intent="Define the properties of a deal payoff.">
+    // <BELIEF_STATE "The constructor includes key identifiers like `stepId`, `payoffId`, `payoffType`, `deponentId`, `recipientId`, and financial details (`amount`, `status`). These fields are essential for understanding the specific payment within the context of a deal.">
     public function __construct(
         public string $stepId,
         public string $payoffId,
@@ -15,4 +29,5 @@ class DealPayoffData extends Data
         public string $amount,
         public string $status,
     ) {}
+    // </SECTION>
 }