Swagger 설정 개선 및 context-path 제거

주요 변경사항:
- 모든 서비스 context-path 제거 (user-service: /api/v1, bill-service: /bill-service, product-service: /api/v1, kos-mock: /kos-mock)
- 포트 번호 조정 (bill-service: 8082, kos-mock: 8084)
- 모든 서비스에 표준화된 SwaggerConfig 클래스 추가
- SecurityConfig에서 Swagger 관련 URL 무인증 처리 개선
- JWT Bearer Authentication 스키마 추가
- 서버 URL 설정 및 커스텀 변수 지원

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

bill-service/src/main/java/com/phonebill/bill/config/SwaggerConfig.java

@@ -0,0 +1,63 @@
+package com.phonebill.bill.config;
+
+import io.swagger.v3.oas.models.Components;
+import io.swagger.v3.oas.models.OpenAPI;
+import io.swagger.v3.oas.models.info.Contact;
+import io.swagger.v3.oas.models.info.Info;
+import io.swagger.v3.oas.models.security.SecurityRequirement;
+import io.swagger.v3.oas.models.security.SecurityScheme;
+import io.swagger.v3.oas.models.servers.Server;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+/**
+ * Swagger/OpenAPI 설정
+ * Bill Service API 문서화를 위한 설정
+ */
+@Configuration
+public class SwaggerConfig {
+
+    @Bean
+    public OpenAPI openAPI() {
+        return new OpenAPI()
+                .info(apiInfo())
+                .addServersItem(new Server()
+                        .url("http://localhost:8082")
+                        .description("Local Development"))
+                .addServersItem(new Server()
+                        .url("{protocol}://{host}:{port}")
+                        .description("Custom Server")
+                        .variables(new io.swagger.v3.oas.models.servers.ServerVariables()
+                                .addServerVariable("protocol", new io.swagger.v3.oas.models.servers.ServerVariable()
+                                        ._default("http")
+                                        .description("Protocol (http or https)")
+                                        .addEnumItem("http")
+                                        .addEnumItem("https"))
+                                .addServerVariable("host", new io.swagger.v3.oas.models.servers.ServerVariable()
+                                        ._default("localhost")
+                                        .description("Server host"))
+                                .addServerVariable("port", new io.swagger.v3.oas.models.servers.ServerVariable()
+                                        ._default("8082")
+                                        .description("Server port"))))
+                .addSecurityItem(new SecurityRequirement().addList("Bearer Authentication"))
+                .components(new Components()
+                        .addSecuritySchemes("Bearer Authentication", createAPIKeyScheme()));
+    }
+
+    private Info apiInfo() {
+        return new Info()
+                .title("Bill Service API")
+                .description("통신요금 관리 서비스 - 요금 조회 및 관리 API")
+                .version("1.0.0")
+                .contact(new Contact()
+                        .name("PhoneBill Development Team")
+                        .email("dev@phonebill.com"));
+    }
+
+    private SecurityScheme createAPIKeyScheme() {
+        return new SecurityScheme()
+                .type(SecurityScheme.Type.HTTP)
+                .bearerFormat("JWT")
+                .scheme("bearer");
+    }
+}

bill-service/src/main/resources/application.yml

@@ -94,9 +94,8 @@ spring:
 
 # 서버 설정
 server:
-  port: ${SERVER_PORT:8081}
+  port: ${SERVER_PORT:8082}
   servlet:
-    context-path: /bill-service
     encoding:
       charset: UTF-8
       enabled: true