Content Service Kafka 의존성 제거

- build.gradle에서 spring-kafka 의존성 삭제
- application*.yml에서 Kafka 설정 제거
- content-service는 Redis에 데이터를 저장하는 역할만 수행
- 서비스 간 비동기 통신이 필요 없어 Kafka 불필요

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

content-service/build.gradle

@@ -5,9 +5,6 @@ configurations {
 }
 
 dependencies {
-    // Kafka Consumer
-    implementation 'org.springframework.kafka:spring-kafka'
-
     // Redis for AI data reading and image URL caching
     implementation 'org.springframework.boot:spring-boot-starter-data-redis'
 

content-service/src/main/resources/application-dev.yml

@@ -8,14 +8,6 @@ spring:
       port: ${REDIS_PORT:6379}
       password: ${REDIS_PASSWORD:}
 
-  kafka:
-    bootstrap-servers: ${KAFKA_BOOTSTRAP_SERVERS:4.230.50.63:9092}
-    consumer:
-      group-id: ${KAFKA_CONSUMER_GROUP_ID:content-service-consumers}
-      auto-offset-reset: earliest
-      key-deserializer: org.apache.kafka.common.serialization.StringDeserializer
-      value-deserializer: org.apache.kafka.common.serialization.StringDeserializer
-
 server:
   port: ${SERVER_PORT:8084}
 

content-service/src/main/resources/application-local.yml

@@ -28,17 +28,10 @@ spring:
       host: localhost
       port: 6379
 
-  kafka:
-    # Kafka 연결 비활성화 (Mock 사용)
-    bootstrap-servers: localhost:9092
-    consumer:
-      enabled: false
-
   autoconfigure:
     exclude:
       - org.springframework.boot.autoconfigure.data.redis.RedisAutoConfiguration
       - org.springframework.boot.autoconfigure.data.redis.RedisRepositoriesAutoConfiguration
-      - org.springframework.boot.autoconfigure.kafka.KafkaAutoConfiguration
 
 server:
   port: 8084

content-service/src/main/resources/application.yml

@@ -8,14 +8,6 @@ spring:
       port: ${REDIS_PORT:6379}
       password: ${REDIS_PASSWORD:}
 
-  kafka:
-    bootstrap-servers: ${KAFKA_BOOTSTRAP_SERVERS:localhost:9092}
-    consumer:
-      group-id: ${KAFKA_CONSUMER_GROUP_ID:content-service-consumers}
-      auto-offset-reset: earliest
-      key-deserializer: org.apache.kafka.common.serialization.StringDeserializer
-      value-deserializer: org.apache.kafka.common.serialization.StringDeserializer
-
 server:
   port: ${SERVER_PORT:8084}