refactor(core): enhance SDK structure and documentation

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

src/Requests/NominalAccounts/Deals/GetDealRequest.php

@@ -1,27 +1,49 @@
 <?php
-
+/*
+// MODULE_CONTRACT: Represents the API call to retrieve a single deal by its ID.
+// RESPONSIBILITY: To define the GET request structure for fetching a specific deal's details.
+// INPUTS: Deal ID (string).
+// OUTPUTS: DealData (DTO).
+*/
 namespace Apoloz\AlfaBank\Requests\NominalAccounts\Deals;
 
+// <SECTION name="module_imports" intent="Import DTO and Saloon components.">
+// <BELIEF_STATE "This request needs the `DealData` DTO for its response and Saloon's base Request class.">
 use Apoloz\AlfaBank\Data\NominalAccounts\Deals\DealData;
 use Saloon\Enums\Method;
 use Saloon\Http\Request;
 use Saloon\Http\Response;
+// </SECTION>
 
+// <SECTION name="class_definition" intent="Define the request to get a single deal.">
+// <BELIEF_STATE "A dedicated class encapsulates the logic for this specific API endpoint, promoting reusability and separation of concerns.">
 class GetDealRequest extends Request
 {
+    // <SECTION name="http_method" intent="Declare the HTTP verb.">
+    // <BELIEF_STATE "Fetching a resource by its identifier is a read-only operation, making GET the correct RESTful verb.">
     protected Method $method = Method::GET;
+    // </SECTION>
 
+    // <SECTION name="constructor" intent="Inject the deal's unique identifier.">
+    // <BELIEF_STATE "The `dealId` is a mandatory path parameter for this endpoint, so it must be required in the constructor.">
     public function __construct(
         protected string $dealId
     ) {}
+    // </SECTION>
 
+    // <SECTION name="endpoint_resolver" intent="Construct the request URI with the dynamic deal ID.">
+    // <BELIEF_STATE "The endpoint is dynamic. Injecting the `dealId` into the URI is handled here to keep the endpoint definition clean and centralized within the request class.">
     public function resolveEndpoint(): string
     {
         return "/api/na/jp/v1/deals/{$this->dealId}";
     }
+    // </SECTION>
 
+    // <SECTION name="response_caster" intent="Map the JSON response to a DealData DTO.">
+    // <BELIEF_STATE "Automated casting to a DTO provides type safety and a clean object-oriented interface for the API response.">
     public function createDtoFromResponse(Response $response): DealData
     {
         return DealData::from($response->json());
     }
+    // </SECTION>
 }