[Feat] 특정 피드 상세 조회 기능 개발 [0.11.2]

[joohyun1996]

📝작업 내용

이번 PR에서 작업한 내용을 간략히 설명해주세요(이미지 첨부 가능)

이전 개발한 모든 피드 목록 조회에서 하나의 피드를 선택하여 특정 피드 상세 조회 기능을 개발하였습니다.

이전 개발한 기능에서 특정 피드만 선택하면 되므로, 특별한 기능을 추가하지는 않았습니다.
특이사항은 커밋 411496c 에서 레포지토리에서 만약 해당 피드의 값이 없을 경우 Optional.Emtpy()를 반환하여 Service 코드에서 ErrorCode.FEED_NOT_FOUND를 반환하도록 설정하였습니다.
피드 사진이 없는 경우는 빈 리스트가 반환되므로 문제가 없음을 확인하였습니다.

스크린샷 (선택)

API 응답 사진: (API 응답 스크린샷을 첨부해주세요.)

API 명세서 사진: (API 명세서 스크린샷을 첨부해주세요.)

테스트 커버리지 사진: (테스트 커버리지 스크린샷을 첨부해주세요.)

Closes #500

[Copilot]

Pull request overview

This PR implements a feature to retrieve detailed information for a specific feed by its ID, building upon the previously developed feed list retrieval functionality. The implementation follows a consistent pattern across all layers (Controller, Service, Repository) and includes comprehensive test coverage.

Changes:

• Added GetSpecificFeedResponse DTO for returning detailed feed information
• Implemented getSpecificFeed(Long feedId) endpoint at GET /api/v1/feeds/{feedId}
• Added repository method that returns Optional.empty() when feed not found, with service layer throwing FEED_NOT_FOUND error
• Added FEED_NOT_FOUND error code to centralized error handling
• Updated API documentation and bumped version to 0.11.2-SNAPSHOT

Reviewed changes

Copilot reviewed 13 out of 14 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
src/main/java/com/project200/undabang/feed/controller/FeedQueryController.java	Added REST endpoint to retrieve specific feed details by ID
src/main/java/com/project200/undabang/feed/service/FeedQueryService.java	Added interface method for specific feed retrieval
src/main/java/com/project200/undabang/feed/service/impl/FeedQueryServiceImpl.java	Implemented service logic for specific feed retrieval with error handling
src/main/java/com/project200/undabang/feed/repository/FeedRepositoryCustom.java	Added repository interface method for specific feed query
src/main/java/com/project200/undabang/feed/repository/impl/FeedRepositoryImpl.java	Implemented QueryDSL query to fetch feed details with member info and pictures
src/main/java/com/project200/undabang/feed/dto/response/GetSpecificFeedResponse.java	Created response DTO with factory method to map from record and pictures
src/main/java/com/project200/undabang/common/web/exception/ErrorCode.java	Added FEED_NOT_FOUND error code for missing feed scenarios
src/test/java/com/project200/undabang/feed/controller/FeedQueryControllerTest.java	Added controller test with API documentation generation
src/test/java/com/project200/undabang/feed/service/impl/FeedQueryServiceImplTest.java	Added comprehensive service layer tests covering success and error cases
src/test/java/com/project200/undabang/feed/repository/impl/FeedRepositoryImplTest.java	Added repository tests for various scenarios including guest users and missing feeds
src/docs/asciidoc/index.adoc	Updated API documentation index to include new endpoint
build.gradle	Updated version from 0.11.1-SNAPSHOT to 0.11.2-SNAPSHOT

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[dlchdaud123]

수고하셨습니다.

The base branch was changed.