init: 클린 아키텍처 백엔드

src/adapter/outbound/persistence-jpa/build.gradle

@@ -0,0 +1,24 @@
+// JPA persistence adapter — merged RDBMS base + PostgreSQL vendor module.
+// Owns JPA entities, Spring Data repositories, mappers, transaction/audit/lock/outbox port
+// implementations, and the vendor-neutral SPI interfaces (OutboxClaimRepository /
+// SqlStateErrorMapping). The PostgreSQL driver, flyway-database-postgresql dialect, and vendor
+// Flyway migrations live only under the .postgresql subpackage (ArchUnit keeps the base neutral).
+dependencies {
+    implementation project(':domain-core')
+    implementation project(':application-core')
+    implementation project(':shared-contract')
+
+    implementation 'org.springframework.boot:spring-boot-starter-data-jpa'
+    // feature-distributed-lock-contract: Spring Integration JDBC LockRegistry backs the
+    // multi-instance distributedLockProvider. Version managed by Spring Boot BOM.
+    implementation 'org.springframework.integration:spring-integration-jdbc'
+
+    // Vendor (PostgreSQL): Flyway migration API + PostgreSQL driver/dialect. Used only by the
+    // .postgresql subpackage; the RDBMS base stays vendor-neutral (PERSISTENCE_RDBMS_STAYS_VENDOR_NEUTRAL).
+    implementation 'org.springframework.boot:spring-boot-starter-flyway'
+    implementation 'org.flywaydb:flyway-core'
+    runtimeOnly 'org.postgresql:postgresql'
+    runtimeOnly 'org.flywaydb:flyway-database-postgresql'
+}
+
+tasks.withType(JavaCompile).configureEach { options.encoding = 'UTF-8' }