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/resources/mapper/MemberMapper.xml

@@ -25,6 +25,10 @@
         SELECT <include refid="columns"/> FROM member WHERE id = #{id}
     </select>
 
+    <select id="findAll" resultMap="memberResultMap">
+        SELECT <include refid="columns"/> FROM member ORDER BY id
+    </select>
+
     <select id="findByLoginId" parameterType="string" resultMap="memberResultMap">
         SELECT <include refid="columns"/> FROM member WHERE login_id = #{loginId}
     </select>
@@ -50,4 +54,16 @@
         UPDATE member SET password = #{password}, updated_at = NOW() WHERE id = #{id}
     </update>
 
+    <update id="updateRole">
+        UPDATE member SET role = #{role}, updated_at = NOW() WHERE id = #{id}
+    </update>
+
+    <update id="updateStatus">
+        UPDATE member SET status = #{status}, updated_at = NOW() WHERE id = #{id}
+    </update>
+
+    <delete id="deleteById">
+        DELETE FROM member WHERE id = #{id}
+    </delete>
+
 </mapper>