Chore: 참석자 초대 API 이벤트 발행 로직 추가

meeting/src/main/java/com/unicorn/hgzero/meeting/biz/service/MeetingService.java

@@ -18,6 +18,7 @@ import com.unicorn.hgzero.meeting.biz.usecase.out.SessionReader;
 import com.unicorn.hgzero.meeting.biz.usecase.out.SessionWriter;
 import com.unicorn.hgzero.meeting.infra.cache.CacheService;
 import com.unicorn.hgzero.meeting.infra.event.dto.MeetingStartedEvent;
+import com.unicorn.hgzero.meeting.infra.event.dto.NotificationRequestEvent;
 import com.unicorn.hgzero.meeting.infra.event.publisher.EventPublisher;
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
@@ -541,12 +542,31 @@ public class MeetingService implements
         // 참석자 저장
         participantWriter.saveParticipant(command.meetingId(), command.email());
 
-        // TODO: 실제 이메일 발송 구현 필요
-        // 이메일 발송 서비스 호출
-        // emailService.sendInvitation(command.email(), meeting, command.frontendUrl());
-        // 현재는 로그만 남기고 성공으로 처리
-        log.info("Invitation email would be sent to {} for meeting {} (Frontend URL: {})",
-                command.email(), meeting.getTitle(), command.frontendUrl());
+        // 회의 초대 알림 이벤트 발행
+        try {
+            NotificationRequestEvent event = NotificationRequestEvent.builder()
+                    .notificationType("MEETING_INVITATION")
+                    .recipientEmail(command.email())
+                    .recipientId(command.email())
+                    .recipientName(command.email())
+                    .title("회의 초대")
+                    .message(String.format("'%s' 회의에 초대되었습니다. 일시: %s, 장소: %s, 참여 링크: %s",
+                            meeting.getTitle(), meeting.getScheduledAt(), meeting.getLocation(), command.frontendUrl()))
+                    .relatedEntityId(command.meetingId())
+                    .relatedEntityType("MEETING")
+                    .requestedBy(meeting.getOrganizerId())
+                    .requestedByName(command.inviterName())
+                    .eventTime(LocalDateTime.now())
+                    .build();
+
+            eventPublisher.publishNotificationRequest(event);
+            log.info("Meeting invitation event published for email: {}, meetingId: {}", 
+                    command.email(), command.meetingId());
+        } catch (Exception e) {
+            log.error("Failed to publish meeting invitation event: meetingId={}, email={}", 
+                    command.meetingId(), command.email(), e);
+            // 이벤트 발행 실패는 비즈니스 로직에 영향을 주지 않으므로 계속 진행
+        }
 
         log.info("Participant invited successfully: {} to meeting {}", command.email(), command.meetingId());
     }