fix: 이메일 회원가입 성공시 토큰 응답 및 이메일 분기 응답 수정

[SinnoLn]

📝 작업 내용

• 로컬 회원가입 완료후 토큰 발급
• 이메일 분기 응답시 휴먼 여부 상관없이 조회되도록 변경

✅ 체크리스트

• 로컬에서 빌드 및 테스트가 통과했습니다.
• 컨벤션(브랜치/커밋 메시지)을 준수했습니다.
• 관련 문서를 수정했습니다. (필요한 경우)

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📥 Commits

Reviewing files that changed from the base of the PR and between 44ee768 and 11778cc.

📒 Files selected for processing (7)

• src/main/java/chaeso/zip/server/auth/application/AuthService.java
• src/main/java/chaeso/zip/server/auth/application/AuthServiceImpl.java
• src/main/java/chaeso/zip/server/auth/application/dto/UserResponse.java
• src/main/java/chaeso/zip/server/auth/presentation/AuthApiDocs.java
• src/main/java/chaeso/zip/server/auth/presentation/AuthController.java
• src/test/java/chaeso/zip/server/auth/application/AuthServiceTest.java
• src/test/java/chaeso/zip/server/auth/presentation/AuthControllerTest.java

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[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 91.92%. Comparing base (44ee768) to head (11778cc).

Additional details and impacted files

@@            Coverage Diff            @@
##                dev     #234   +/-   ##
=========================================
  Coverage     91.92%   91.92%           
  Complexity      790      790           
=========================================
  Files           131      131           
  Lines          2377     2377           
  Branches        204      204           
=========================================
  Hits           2185     2185           
  Misses          129      129           
  Partials         63       63           

Files with missing lines	Coverage Δ
...o/zip/server/auth/application/AuthServiceImpl.java	96.36% <100.00%> (ø)
...o/zip/server/auth/presentation/AuthController.java	85.71% <ø> (ø)

Components	Coverage Δ
auth	95.66% <100.00%> (ø)
channel	82.53% <ø> (ø)
onboarding	89.00% <ø> (ø)
estimation	94.11% <ø> (ø)
performance	91.66% <ø> (ø)
simulation	91.82% <ø> (ø)
user	96.96% <ø> (ø)

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[claude]

PR 리뷰 결과

머지를 막을 필요가 있는(must-fix) 문제를 찾지 못했습니다.

확인한 내용

• signup()의 UserResponse → TokenResponse 변경: 컨트롤러/테스트/OpenAPI 문서 예시가 모두 일관되게 갱신됨. UserResponse 참조가 코드 전체에 남아있지 않음을 확인.
• findLoginMethods()의 findByEmailAndDeletedAtIsNull → findByEmail 변경: LoginMethodsResponse는 deletedAt 등 탈퇴 상태를 노출하지 않고 provider 목록만 반환하므로 정보 노출 문제 없음. 탈퇴 계정에 대한 실제 로그인/가입 시도는 기존 rejectWithdrawn/restoreIfPossible 로직이 그대로 막고 있어 일관성 유지됨.
• ArchUnit 계층 규칙(presentation→application DTO만 사용) 위반 없음.
• 관련 단위/컨트롤러 테스트가 변경된 동작(토큰 발급, 탈퇴 계정도 로그인 수단 조회됨)을 커버함.

Nit 수준(오탈자 등)은 게이트 특성상 생략합니다.