feat: generate pods with Maven library dependency

dat-was-lib/src/main/java/io/shinhanlife/dat/lib/util/NewPodProjectScaffolder.java

@@ -73,12 +73,6 @@ public final class NewPodProjectScaffolder {
         String serviceName = "was-" + shortName;
         write(root.resolve("settings.gradle"), """
                 rootProject.name = '%s'
-
-                includeBuild('../dat-lib-datmt') {
-                    dependencySubstitution {
-                        substitute module('io.shinhanlife:dat-lib-datmt') using project(':dat-was-lib')
-                    }
-                }
                 """.formatted(moduleName));
         write(root.resolve("build.gradle"), """
                 plugins {
@@ -94,9 +88,16 @@ public final class NewPodProjectScaffolder {
                     toolchain { languageVersion = JavaLanguageVersion.of(21) }
                 }
 
-                repositories { mavenCentral() }
+                repositories {
+                    // dat-lib-datmt에서 :dat-was-lib:publishToMavenLocal 실행 후
+                    // Maven Local의 io.shinhanlife:dat-lib-datmt JAR/POM을 사용합니다.
+                    // 신한라이프 이관 시 mavenLocal() 대신 사내 Nexus repository를 추가합니다.
+                    mavenLocal()
+                    mavenCentral()
+                }
 
                 dependencies {
+                    // includeBuild 없이 Maven 좌표로만 공통 MCP Server와 연동 기능을 사용합니다.
                     implementation 'io.shinhanlife:dat-lib-datmt:0.0.1-SNAPSHOT'
                 }
 
@@ -219,7 +220,9 @@ public final class NewPodProjectScaffolder {
 
                 ## 공통 라이브러리
 
-                상위 workspace의 `dat-lib-datmt`를 Gradle composite build로 참조합니다.
+                `io.shinhanlife:dat-lib-datmt:0.0.1-SNAPSHOT` Maven 좌표로 공통 라이브러리를 참조합니다.
+                로컬 개발에서는 먼저 `dat-lib-datmt`에서 `:dat-was-lib:publishToMavenLocal`을 실행한 뒤 이 프로젝트를 빌드합니다.
+                신한라이프 이관 후에는 같은 Maven 좌표를 사내 Nexus에서 내려받도록 `mavenLocal()`을 Nexus repository로 교체합니다.
 
                 ## 빌드
 

dat-was-lib/src/test/java/io/shinhanlife/dat/lib/util/NewPodProjectScaffolderTest.java

@@ -14,7 +14,7 @@ class NewPodProjectScaffolderTest {
     Path workspace;
 
     @Test
-    void createsStandaloneProjectWithCompositeBuild() throws Exception {
+    void createsStandaloneProjectWithMavenLibraryDependency() throws Exception {
         createLibraryProject();
         String result = NewPodProjectScaffolder.scaffold(workspace, "dat-was-payment", 8099,
                 "tester", "2026.09.09");
@@ -27,10 +27,14 @@ class NewPodProjectScaffolderTest {
         assertTrue(Files.exists(project.resolve("k8s/base/deployment.yaml")));
         assertTrue(Files.exists(project.resolve("gradlew.bat")));
         assertTrue(Files.exists(project.resolve("gradle/wrapper/gradle-wrapper.jar")));
-        assertTrue(Files.readString(project.resolve("settings.gradle"))
-                .contains("includeBuild('../dat-lib-datmt')"));
-        assertTrue(Files.readString(project.resolve("build.gradle"))
-                .contains("io.shinhanlife:dat-lib-datmt:0.0.1-SNAPSHOT"));
+        String settings = Files.readString(project.resolve("settings.gradle"));
+        String build = Files.readString(project.resolve("build.gradle"));
+        assertTrue(!settings.contains("includeBuild('../dat-lib-datmt')"));
+        assertTrue(build.contains("mavenLocal()"));
+        assertTrue(build.contains("io.shinhanlife:dat-lib-datmt:0.0.1-SNAPSHOT"));
+        assertTrue(build.contains("publishToMavenLocal"));
+        assertTrue(Files.readString(project.resolve("README.md")).contains("publishToMavenLocal"));
+        assertTrue(!Files.readString(project.resolve("README.md")).contains("composite build"));
         assertTrue(Files.readString(project.resolve("src/main/resources/application.yml"))
                 .contains("port: ${PORT:8099}"));
         assertTrue(Files.readString(project.resolve("src/main/resources/application.yml"))