init: 클린 아키텍처 백엔드

src/adapter/outbound/objectstorage/build.gradle

@@ -0,0 +1,33 @@
+// Driven adapter: object storage behind application-core's ObjectStoragePort. Two backends — local
+// filesystem (default, no external service) and S3/MinIO via the AWS SDK v2 S3 client (endpoint
+// override makes the same code work against real AWS S3 and MinIO). Opt-in via
+// @ConditionalOnProperty (ca-skeleton.objectstorage.backend); filesystem is the matchIfMissing
+// default.
+//
+// software.amazon.awssdk:* versions are NOT managed by the Spring Boot BOM, and this repo has no
+// version catalog, so the AWS SDK v2 BOM platform is imported HERE (module scope) using the root
+// `ext.awsSdkVersion` SSOT — this keeps the strict-locking blast radius to this module (the shared
+// root dependencyManagement block stays awssdk-free), mirroring the grpc module's grpc-bom import.
+description = 'Outbound adapter: object storage (S3/MinIO + local filesystem)'
+
+dependencyManagement {
+    imports {
+        mavenBom "software.amazon.awssdk:bom:${awsSdkVersion}"
+    }
+}
+
+dependencies {
+    implementation project(':application-core')
+    implementation project(':shared-contract')
+
+    implementation 'org.springframework.boot:spring-boot-starter'
+    implementation 'software.amazon.awssdk:s3'
+
+    annotationProcessor 'org.springframework.boot:spring-boot-configuration-processor'
+
+    // test-only: Testcontainers MinIO integration test for the S3 backend. Uses the core
+    // GenericContainer (no dedicated module) so the S3 round-trip runs against a real MinIO when
+    // Docker is available and is skipped (disabledWithoutDocker) otherwise.
+    testImplementation 'org.testcontainers:testcontainers'
+    testImplementation 'org.testcontainers:testcontainers-junit-jupiter'
+}