Initialize RTGS prototype repository

3센터 A-A-A RTGS 실시간총액결제 프로토타입 최초 버전관리 시작.
- backend: Kotlin/Gradle 멀티모듈(sequencer, common, 채널/센터 모듈)
- frontend: Vite + TS
- infra: docker-compose, prometheus/grafana, ELK 네이티브 스크립트
- loadtest(k6), sim(장애/순서/정합성 시나리오), docs(PoC 보고서/복원력방안)

backend/hermes/src/main/resources/application.yml

@@ -0,0 +1,37 @@
+spring:
+  application:
+    name: hermes
+  datasource:
+    url: jdbc:postgresql://${POSTGRES_HOST:localhost}:${POSTGRES_PORT:5433}/${POSTGRES_DB:rtgs}
+    username: ${POSTGRES_USER:rtgs}
+    password: ${POSTGRES_PASSWORD:rtgs}
+  jpa:
+    hibernate:
+      ddl-auto: none
+    open-in-view: false
+  kafka:
+    bootstrap-servers: ${KAFKA_BOOTSTRAP:localhost:9092}
+    consumer:
+      group-id: hermes
+      auto-offset-reset: earliest
+      enable-auto-commit: false
+      key-deserializer: org.apache.kafka.common.serialization.StringDeserializer
+      value-deserializer: org.apache.kafka.common.serialization.StringDeserializer
+    producer:
+      key-serializer: org.apache.kafka.common.serialization.StringSerializer
+      value-serializer: org.apache.kafka.common.serialization.StringSerializer
+      acks: all
+    listener:
+      ack-mode: record
+
+server:
+  port: 8093
+
+rtgs:
+  center-id: ${CENTER_ID:DC1}
+
+management:
+  endpoints:
+    web:
+      exposure:
+        include: health,info,prometheus,metrics