[#341][FIX] 개인 회고 API 약속 관련 헤더 정보 필드 추가

src/main/java/com/dokdok/retrospective/api/PersonalRetrospectiveApi.java

@@ -152,7 +152,7 @@ ResponseEntity<ApiResponse<PersonalRetrospectiveResponse>> writePersonalRetrospe
                     content = @Content(mediaType = MediaType.APPLICATION_JSON_VALUE,
                             schema = @Schema(implementation = PersonalRetrospectiveFormResponse.class),
                             examples = @ExampleObject(value = """
-                                    {"code": "SUCCESS", "message": "개인 회고 입력 폼 조회를 성공했습니다.", "data": {"meetingId": 1, "preOpinions": [{"topicId": 1, "topicName": "깨끗한 코드", "content": "사전 의견 내용을 작성합니다."}], "topics": [{"topicId": 1, "topicName": "깨끗한 코드", "confirmOrder": 1}], "meetingMembers": [{"meetingMemberId": 10, "nickname": "독서왕", "profileImage": "https://example.com/profile.jpg"}]}}
+                                    {"code": "SUCCESS", "message": "개인 회고 입력 폼 조회를 성공했습니다.", "data": {"meetingId": 1, "meetingHeaderInfo": {"gatheringName": "독서 모임", "bookTitle": "클린 코드", "bookAuthor": "로버트 마틴"}, "preOpinions": [{"topicId": 1, "topicName": "깨끗한 코드", "content": "사전 의견 내용을 작성합니다."}], "topics": [{"topicId": 1, "topicName": "깨끗한 코드", "confirmOrder": 1}], "meetingMembers": [{"meetingMemberId": 10, "nickname": "독서왕", "profileImage": "https://example.com/profile.jpg"}]}}
                                     """)
                     )
             ),
@@ -246,7 +246,7 @@ ResponseEntity<ApiResponse<PersonalRetrospectiveFormResponse>> getPersonalRetros
                     content = @Content(mediaType = MediaType.APPLICATION_JSON_VALUE,
                             schema = @Schema(implementation = PersonalRetrospectiveEditResponse.class),
                             examples = @ExampleObject(value = """
-                                    {"code": "SUCCESS", "message": "개인 회고 수정 폼 조회를 성공했습니다.", "data": {"retrospectiveId": 1, "retrospective": {"changedThoughts": [{"topicId": 1, "keyIssue": "요약된 핵심 쟁점", "preOpinion": "토론 전 나의 생각", "postOpinion": "토론 후 바뀐 생각"}], "othersPerspectives": [{"topicId": 1, "meetingMemberId": 10, "opinionContent": "상대 의견이 인상적이었습니다.", "impressiveReason": "새로운 관점을 제공했기 때문입니다."}], "freeTexts": [{"title": "오늘의 한 줄", "content": "회고 내용을 작성합니다."}]}, "topics": [{"topicId": 1, "topicName": "깨끗한 코드", "confirmOrder": 1}], "meetingMembers": [{"meetingMemberId": 10, "nickname": "독서왕", "profileImage": "https://example.com/profile.jpg"}]}}
+                                    {"code": "SUCCESS", "message": "개인 회고 수정 폼 조회를 성공했습니다.", "data": {"retrospectiveId": 1, "meetingHeaderInfo": {"gatheringName": "독서 모임", "bookTitle": "클린 코드", "bookAuthor": "로버트 마틴"}, "retrospective": {"changedThoughts": [{"topicId": 1, "keyIssue": "요약된 핵심 쟁점", "preOpinion": "토론 전 나의 생각", "postOpinion": "토론 후 바뀐 생각"}], "othersPerspectives": [{"topicId": 1, "meetingMemberId": 10, "opinionContent": "상대 의견이 인상적이었습니다.", "impressiveReason": "새로운 관점을 제공했기 때문입니다."}], "freeTexts": [{"title": "오늘의 한 줄", "content": "회고 내용을 작성합니다."}]}, "topics": [{"topicId": 1, "topicName": "깨끗한 코드", "confirmOrder": 1}], "meetingMembers": [{"meetingMemberId": 10, "nickname": "독서왕", "profileImage": "https://example.com/profile.jpg"}]}}
                                     """)
                     )
             ),
@@ -337,7 +337,7 @@ ResponseEntity<ApiResponse<PersonalRetrospectiveEditResponse>> getPersonalRetros
                     content = @Content(mediaType = MediaType.APPLICATION_JSON_VALUE,
                             schema = @Schema(implementation = PersonalRetrospectiveDetailResponse.class),
                             examples = @ExampleObject(value = """
-                                    {"code": "SUCCESS", "message": "개인 회고 조회를 성공했습니다.", "data": {"retrospectiveId": 1, "retrospective": {"changedThoughts": [{"topicId": 1, "topicTitle": "깨끗한 코드", "keyIssue": "요약된 핵심 쟁점", "preOpinion": "토론 전 나의 생각", "postOpinion": "토론 후 바뀐 생각"}], "othersPerspectives": [{"topicId": 1, "meetingMemberId": 10, "profileImage": "https://example.com/profile.jpg", "nickname": "독서왕", "opinionContent": "상대 의견이 인상적이었습니다.", "impressiveReason": "새로운 관점을 제공했기 때문입니다."}], "freeTexts": [{"title": "오늘의 한 줄", "content": "회고 내용을 작성합니다."}]}}}
+                                    {"code": "SUCCESS", "message": "개인 회고 조회를 성공했습니다.", "data": {"retrospectiveId": 1, "meetingHeaderInfo": {"gatheringName": "독서 모임", "bookTitle": "클린 코드", "bookAuthor": "로버트 마틴"}, "retrospective": {"changedThoughts": [{"topicId": 1, "topicTitle": "깨끗한 코드", "keyIssue": "요약된 핵심 쟁점", "preOpinion": "토론 전 나의 생각", "postOpinion": "토론 후 바뀐 생각"}], "othersPerspectives": [{"topicId": 1, "meetingMemberId": 10, "profileImage": "https://example.com/profile.jpg", "nickname": "독서왕", "opinionContent": "상대 의견이 인상적이었습니다.", "impressiveReason": "새로운 관점을 제공했기 때문입니다."}], "freeTexts": [{"title": "오늘의 한 줄", "content": "회고 내용을 작성합니다."}]}}}
                                     """)
                     )
             ),

src/main/java/com/dokdok/retrospective/dto/response/MeetingHeaderInfo.java

@@ -0,0 +1,22 @@
+package com.dokdok.retrospective.dto.response;
+
+import com.dokdok.meeting.entity.Meeting;
+import io.swagger.v3.oas.annotations.media.Schema;
+
+@Schema(description = "약속 헤더 정보")
+public record MeetingHeaderInfo(
+        @Schema(description = "모임 이름", example = "독서 모임")
+        String gatheringName,
+        @Schema(description = "책 제목", example = "클린 코드")
+        String bookTitle,
+        @Schema(description = "저자", example = "로버트 마틴")
+        String bookAuthor
+) {
+    public static MeetingHeaderInfo from(Meeting meeting) {
+        return new MeetingHeaderInfo(
+                meeting.getGathering().getGatheringName(),
+                meeting.getBook().getBookName(),
+                meeting.getBook().getAuthor()
+        );
+    }
+}

src/main/java/com/dokdok/retrospective/dto/response/PersonalRetrospectiveDetailResponse.java

@@ -11,6 +11,8 @@
 public record PersonalRetrospectiveDetailResponse(
         @Schema(description = "개인 회고 ID", example = "1")
         Long retrospectiveId,
+        @Schema(description = "약속 헤더 정보")
+        MeetingHeaderInfo meetingHeaderInfo,
         @Schema(description = "개인 회고 데이터")
         RetrospectiveData retrospective
 ) {
@@ -101,12 +103,14 @@ public static FreeText from(RetrospectiveFreeText freeText) {
 
     public static PersonalRetrospectiveDetailResponse from(
             Long retrospectiveId,
+            MeetingHeaderInfo meetingHeaderInfo,
             List<ChangedThought> changedThoughts,
             List<OthersPerspective> othersPerspectives,
             List<FreeText> freeTexts
     ) {
         return new PersonalRetrospectiveDetailResponse(
                 retrospectiveId,
+                meetingHeaderInfo,
                 new RetrospectiveData(changedThoughts, othersPerspectives, freeTexts)
         );
     }

src/main/java/com/dokdok/retrospective/dto/response/PersonalRetrospectiveEditResponse.java

@@ -11,6 +11,8 @@
 public record PersonalRetrospectiveEditResponse(
         @Schema(description = "개인 회고 ID", example = "1")
         Long retrospectiveId,
+        @Schema(description = "약속 헤더 정보")
+        MeetingHeaderInfo meetingHeaderInfo,
         @Schema(description = "개인 회고 데이터")
         RetrospectiveData retrospective,  // 작성 데이터 묶음
         @Schema(description = "확정된 주제 목록")
@@ -92,6 +94,7 @@ public static FreeText from(RetrospectiveFreeText freeText) {
 
     public static PersonalRetrospectiveEditResponse from(
             Long retrospectiveId,
+            MeetingHeaderInfo meetingHeaderInfo,
             List<ChangedThought> changedThoughts,
             List<OthersPerspective> othersPerspectives,
             List<FreeText> freeTexts,
@@ -100,6 +103,7 @@ public static PersonalRetrospectiveEditResponse from(
     ) {
         return new PersonalRetrospectiveEditResponse(
                 retrospectiveId,
+                meetingHeaderInfo,
                 new RetrospectiveData(changedThoughts, othersPerspectives, freeTexts), // 묶어서 전달
                 topics,
                 meetingMembers

src/main/java/com/dokdok/retrospective/dto/response/PersonalRetrospectiveFormResponse.java

@@ -10,6 +10,8 @@
 public record PersonalRetrospectiveFormResponse(
         @Schema(description = "약속 ID", example = "1")
         Long meetingId,
+        @Schema(description = "약속 헤더 정보")
+        MeetingHeaderInfo meetingHeaderInfo,
         @Schema(description = "사전 의견 목록")
         List<PreOpinions> preOpinions,
         @Schema(description = "확정된 주제 목록")
@@ -38,12 +40,14 @@ public static PreOpinions from(Topic topic, TopicAnswer topicAnswer) {
 
     public static PersonalRetrospectiveFormResponse of(
             Long meetingId,
+            MeetingHeaderInfo meetingHeaderInfo,
             List<PreOpinions> preOpinions,
             List<TopicInfo> topics,
             List<MemberInfo> meetingMembers
     ) {
         return new PersonalRetrospectiveFormResponse(
                 meetingId,
+                meetingHeaderInfo,
                 preOpinions,
                 topics,
                 meetingMembers

src/main/java/com/dokdok/retrospective/service/PersonalRetrospectiveAssembler.java

@@ -1,5 +1,6 @@
 package com.dokdok.retrospective.service;
 
+import com.dokdok.meeting.entity.Meeting;
 import com.dokdok.meeting.entity.MeetingMember;
 import com.dokdok.retrospective.dto.projection.ChangedThoughtProjection;
 import com.dokdok.retrospective.dto.projection.FreeTextProjection;
@@ -29,7 +30,7 @@ public class PersonalRetrospectiveAssembler {
     private final StorageService storageService;
 
     public PersonalRetrospectiveFormResponse assembleCreate(
-            Long meetingId,
+            Meeting meeting,
             List<Topic> topics,
             List<TopicAnswer> topicAnswers,
             List<MeetingMember> meetingMembers
@@ -58,14 +59,16 @@ public PersonalRetrospectiveFormResponse assembleCreate(
         List<MemberInfo> memberDtos = toMemberDtos(meetingMembers);
 
         return PersonalRetrospectiveFormResponse.of(
-                meetingId,
+                meeting.getId(),
+                MeetingHeaderInfo.from(meeting),
                 preOpinions,
                 topicDtos,
                 memberDtos
         );
     }
 
     public PersonalRetrospectiveEditResponse assembleEdit(
+            Meeting meeting,
             Long retrospectiveId,
             List<RetrospectiveChangedThought> changedThoughts,
             List<RetrospectiveOthersPerspective> othersPerspectives,
@@ -93,6 +96,7 @@ public PersonalRetrospectiveEditResponse assembleEdit(
 
         return PersonalRetrospectiveEditResponse.from(
                 retrospectiveId,
+                MeetingHeaderInfo.from(meeting),
                 changedThoughtList,
                 othersPerspectiveList,
                 freeTextList,
@@ -102,6 +106,7 @@ public PersonalRetrospectiveEditResponse assembleEdit(
     }
 
     public PersonalRetrospectiveDetailResponse assembleView(
+            Meeting meeting,
             Long retrospectiveId,
             List<RetrospectiveChangedThought> changedThoughts,
             List<RetrospectiveOthersPerspective> othersPerspectives,
@@ -129,6 +134,7 @@ public PersonalRetrospectiveDetailResponse assembleView(
 
         return PersonalRetrospectiveDetailResponse.from(
                 retrospectiveId,
+                MeetingHeaderInfo.from(meeting),
                 changedThoughtList,
                 othersPerspectiveList,
                 freeTextList

src/main/java/com/dokdok/retrospective/service/PersonalRetrospectiveService.java

@@ -83,7 +83,7 @@ public PersonalRetrospectiveFormResponse getPersonalRetrospectiveForm(Long meeti
 
         Long userId = SecurityUtil.getCurrentUserId();
 
-        meetingValidator.validateMeeting(meetingId);
+        Meeting meeting = meetingValidator.findMeetingOrThrow(meetingId);
         meetingValidator.validateMeetingMember(meetingId, userId);
         retrospectiveValidator.validateRetrospective(meetingId, userId);
 
@@ -92,7 +92,7 @@ public PersonalRetrospectiveFormResponse getPersonalRetrospectiveForm(Long meeti
         List<MeetingMember> meetingMembers = meetingMemberRepository.findOtherMembersByMeetingId(meetingId, userId);
 
         return assembler.assembleCreate(
-                meetingId,
+                meeting,
                 topics,
                 topicAnswers,
                 meetingMembers
@@ -110,6 +110,7 @@ public PersonalRetrospectiveEditResponse getPersonalRetrospectiveEditForm(Long m
         PersonalMeetingRetrospective retrospective
                 = retrospectiveValidator.getRetrospectiveByMeetingAndUser(meetingId, userId);
         Long retrospectiveId = retrospective.getId();
+        Meeting meeting = retrospective.getMeeting();
 
         List<RetrospectiveChangedThought> changedThoughts
                 = changedThoughtRepository.findByPersonalMeetingRetrospective(retrospectiveId);
@@ -126,6 +127,7 @@ public PersonalRetrospectiveEditResponse getPersonalRetrospectiveEditForm(Long m
                 = meetingMemberRepository.findOtherMembersByMeetingId(meetingId, userId);
 
         return assembler.assembleEdit(
+                meeting,
                 retrospectiveId,
                 changedThoughts,
                 othersPerspectives,
@@ -250,6 +252,7 @@ public PersonalRetrospectiveDetailResponse getPersonalRetrospective(Long meeting
         PersonalMeetingRetrospective retrospective
                 = retrospectiveValidator.getRetrospectiveByMeetingAndUser(meetingId, userId);
         Long retrospectiveId = retrospective.getId();
+        Meeting meeting = retrospective.getMeeting();
 
         List<RetrospectiveChangedThought> changedThoughts
                 = changedThoughtRepository.findByPersonalMeetingRetrospective(retrospectiveId);
@@ -261,6 +264,7 @@ public PersonalRetrospectiveDetailResponse getPersonalRetrospective(Long meeting
                 freeTextRepository.findByPersonalMeetingRetrospective_Id(retrospectiveId);
 
         return assembler.assembleView(
+                meeting,
                 retrospectiveId,
                 changedThoughts,
                 othersPerspectives,