feat: 관리자 회원 관리 API (/api/admin/members)

목록/역할 변경/상태 변경/삭제. 본인 계정 변경·삭제 차단.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

src/main/java/com/sb/web/auth/dto/MemberAdminResponse.java

@@ -0,0 +1,37 @@
+package com.sb.web.auth.dto;
+
+import com.sb.web.auth.domain.Member;
+import lombok.Builder;
+import lombok.Data;
+
+import java.time.LocalDateTime;
+
+/**
+ * 관리자용 회원 정보 응답 (비밀번호 제외).
+ */
+@Data
+@Builder
+public class MemberAdminResponse {
+
+    private Long id;
+    private String loginId;
+    private String name;
+    private String email;
+    private String role;     // USER / ADMIN
+    private String status;   // ACTIVE / SUSPENDED / WITHDRAWN
+    private String provider; // LOCAL / 소셜
+    private LocalDateTime createdAt;
+
+    public static MemberAdminResponse from(Member m) {
+        return MemberAdminResponse.builder()
+                .id(m.getId())
+                .loginId(m.getLoginId())
+                .name(m.getName())
+                .email(m.getEmail())
+                .role(m.getRole())
+                .status(m.getStatus())
+                .provider(m.getProvider())
+                .createdAt(m.getCreatedAt())
+                .build();
+    }
+}

src/main/java/com/sb/web/auth/mapper/MemberMapper.java

@@ -4,6 +4,8 @@ import com.sb.web.auth.domain.Member;
 import org.apache.ibatis.annotations.Mapper;
 import org.apache.ibatis.annotations.Param;
 
+import java.util.List;
+
 /**
  * 회원 MyBatis 매퍼. SQL 은 resources/mapper/MemberMapper.xml 에 정의.
  */
@@ -12,6 +14,9 @@ public interface MemberMapper {
 
     Member findById(@Param("id") Long id);
 
+    /** 관리자: 전체 회원 목록 */
+    List<Member> findAll();
+
     Member findByLoginId(@Param("loginId") String loginId);
 
     Member findByProvider(@Param("provider") String provider,
@@ -22,4 +27,10 @@ public interface MemberMapper {
     int insert(Member member);
 
     int updatePassword(@Param("id") Long id, @Param("password") String password);
+
+    int updateRole(@Param("id") Long id, @Param("role") String role);
+
+    int updateStatus(@Param("id") Long id, @Param("status") String status);
+
+    int deleteById(@Param("id") Long id);
 }