build(itms): 버전 통일 — oauth2 2.3.8 단일화 + Java 17 source (R1, INTEGRATION_DESIGN §3-3)

- R1: auth spring-security-oauth2 2.3.4.RELEASE → 2.3.8.RELEASE (api·datatrans 와 일치, 드리프트 해소).
- sourceCompatibility 혼재(api·datatrans=11 / auth·batch·front=16) → 17 통일 + common=17.
  로컬 JDK17 로 6모듈 compileJava 전부 SUCCESS(--rerun-tasks) — 언어레벨 상향에 따른 예약어/구문 충돌 0.
- lombok(1.18.20)·mybatis-spring-boot-starter(2.2.2)·spring-security-jwt(1.0.9)는 이미 전 모듈 동일
  (드리프트 없음) → 불필요한 루트 승격 churn 회피, 현행 유지.
동작 등가: 산출 bytecode 타깃만 17로 상향, 의존성 좌표는 최신본으로 정합.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

api/build.gradle

@@ -9,7 +9,7 @@ plugins
 
 group = 'com.urpsys'
 version = '1.0.0-SNAPSHOT'
-sourceCompatibility = '11'
+sourceCompatibility = '17'
 
 configurations 
 {

auth/build.gradle

@@ -10,7 +10,7 @@ plugins
 
 group = 'com.urpsys'
 version = '1.0.0-SNAPSHOT'
-sourceCompatibility = '16'
+sourceCompatibility = '17'
 
 configurations 
 {
@@ -73,7 +73,7 @@ dependencies
     
     implementation 'org.springframework.boot:spring-boot-starter-security' // 보안처리
     implementation 'org.springframework.security:spring-security-jwt:1.0.9.RELEASE' // 토크처리 
-    implementation group: 'org.springframework.security.oauth', name: 'spring-security-oauth2', version: '2.3.4.RELEASE' // spring oauth 2.0
+    implementation group: 'org.springframework.security.oauth', name: 'spring-security-oauth2', version: '2.3.8.RELEASE' // spring oauth 2.0
     implementation group: 'org.glassfish.jaxb', name: 'jaxb-runtime', version: '2.3.3'
     
 }

batch/build.gradle

@@ -9,7 +9,7 @@ plugins
 
 group = 'com.urpsys'
 version = '1.0.0-SNAPSHOT'
-sourceCompatibility = '16'
+sourceCompatibility = '17'
 
 configurations 
 {

common/build.gradle

@@ -8,7 +8,7 @@ plugins {
 
 group = 'com.urpsys'
 version = '1.0.0-SNAPSHOT'
-sourceCompatibility = '11'   // 소비 모듈(11/16) 최저 호환. JDK17 컴파일러로 빌드.
+sourceCompatibility = '17'   // 통합 toolchain 17 (INTEGRATION_DESIGN §3-3)
 
 configurations {
     compileOnly {

datatrans/build.gradle

@@ -9,7 +9,7 @@ plugins
 
 group = 'com.urpsys'
 version = '1.0.0-SNAPSHOT'
-sourceCompatibility = '11'
+sourceCompatibility = '17'
 
 configurations 
 {

front/build.gradle

@@ -9,7 +9,7 @@ plugins
 
 group = 'com.urpsys'
 version = '1.0.0-SNAPSHOT'
-sourceCompatibility = '16'
+sourceCompatibility = '17'
 
 configurations 
 {