Refactor Steam adapter packages and update docs

Move steam_adapter sources from domain.* to modules.* and rename controller package to api. Update package declarations and imports across SteamTestController, SteamPlayerSummaryResponse, SteamClientConfig, and SteamApiService. Update README to re-label Controller -> API layer and Domain -> Business layer and adjust wording about layer boundaries. Also normalize file endings/newlines in several Java files. No functional logic changes were made.

readme.md

@@ -19,20 +19,20 @@ The project strictly follows a Domain-Driven / Clean Architecture (Ports & Adapt
 
 ### Layer Breakdown
 
-1. **Controller / Web Layer (`controller`)**
+1. **API / Web Layer (`api`)**
     * Contains REST endpoints, DTOs (`Request`/`Response` records), and Global Exception Handlers.
     * Uses `ApiMapper` to map between DTOs and Domain Models.
     * **Rule:** This layer delegates to the Service layer and never accesses persistence directly.
 
-2. **Domain / Core Layer (`model`, `service`, `exception`)**
+2. **Business / Core Layer (`model`, `service`, `exception`)**
     * The heart of the application. Contains pure Java classes (Models) and Business Logic (Services).
     * Throws specific business exceptions (e.g., `InvalidCredentialsException`).
-    * **Rule:** This layer has **no dependencies** on the Controller or Persistence layer. It defines interfaces that the persistence layer must implement.
+    * **Rule:** This layer has **no dependencies** on the API or Persistence layer. It defines interfaces that the persistence layer must implement.
 
 3. **Persistence Layer (`persistence`)**
     * Handles database operations. Contains JPA Entities (`UserEntity`), Spring Data Repositories, and the `EntityMapper`.
     * Implements the interfaces defined in the Domain layer.
-    * **Rule:** Entities never leak into the Controller layer.
+    * **Rule:** Entities never leak into the API layer.
 
 *Note: Future implementations will include ArchUnit tests to automatically enforce these architectural boundaries during the CI pipeline.*
 

src/main/java/core_service/CoreServiceApplication.java

@@ -10,3 +10,4 @@ public class CoreServiceApplication {
         SpringApplication.run(CoreServiceApplication.class, args);
     }
 }
+

src/main/java/core_service/configuration/security/JwtAuthenticationFilter.java

@@ -66,3 +66,4 @@ public class JwtAuthenticationFilter extends OncePerRequestFilter {
         filterChain.doFilter(request, response);
     }
 }
+

src/main/java/core_service/configuration/security/JwtConfig.java

@@ -13,3 +13,4 @@ public class JwtConfig {
 
     private String secret;
 }
+

src/main/java/core_service/configuration/security/JwtService.java

@@ -53,3 +53,4 @@ public class JwtService {
         return Keys.hmacShaKeyFor(keyBytes);
     }
 }
+

src/main/java/core_service/modules/steam_adapter/api/SteamTestController.java

@@ -1,7 +1,7 @@
-package core_service.domain.steam_adapter.controller;
+package core_service.modules.steam_adapter.api;
 
-import core_service.domain.steam_adapter.controller.dto.response.SteamPlayerSummaryResponse;
+import core_service.modules.steam_adapter.api.dto.response.SteamPlayerSummaryResponse;
-import core_service.domain.steam_adapter.service.SteamApiService;
+import core_service.modules.steam_adapter.service.SteamApiService;
 import lombok.RequiredArgsConstructor;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.GetMapping;

src/main/java/core_service/modules/steam_adapter/api/dto/response/SteamPlayerSummaryResponse.java

@@ -1,4 +1,4 @@
-package core_service.domain.steam_adapter.controller.dto.response;
+package core_service.modules.steam_adapter.api.dto.response;
 
 import java.util.List;
 

src/main/java/core_service/modules/steam_adapter/config/SteamClientConfig.java

@@ -1,4 +1,4 @@
-package core_service.domain.steam_adapter.config;
+package core_service.modules.steam_adapter.config;
 
 import org.springframework.beans.factory.annotation.Value;
 import org.springframework.context.annotation.Bean;

src/main/java/core_service/modules/steam_adapter/service/SteamApiService.java

@@ -1,6 +1,6 @@
-package core_service.domain.steam_adapter.service;
+package core_service.modules.steam_adapter.service;
 
-import core_service.domain.steam_adapter.controller.dto.response.SteamPlayerSummaryResponse;
+import core_service.modules.steam_adapter.api.dto.response.SteamPlayerSummaryResponse;
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.beans.factory.annotation.Value;

src/main/java/core_service/shared/security/UserPrincipal.java

@@ -16,3 +16,4 @@ public record UserPrincipal(
         return Long.parseLong(id);
     }
 }
+