refactor(profile): major List로 받아오는 거에서 하나 받아오는걸로 변경

main-server/src/main/java/com/sickgyun/server/profile/domain/value/Filter.java

@@ -1,10 +1,8 @@
 package com.sickgyun.server.profile.domain.value;
 
-import java.util.List;
-
 public record Filter(
 	Boolean isRecruited,
-	List<Major> majors,
+	Major major,
 	Long cardinal
 ) {
 }

main-server/src/main/java/com/sickgyun/server/profile/infra/database/QueryProfileRepositoryImpl.java

@@ -31,18 +31,18 @@ public List<Profile> findAllFiltered(Filter filter) {
 			.leftJoin(profile.writer, user)
 			.fetchJoin()
 			.where(
-				majorFilter(filter.majors()),
+				majorFilter(filter.major()),
 				recruitedFilter(filter.isRecruited()),
 				cardinalFilter(filter.cardinal())
 			).fetch();
 	}
 
-	private BooleanExpression majorFilter(List<Major> majors) {
-		if (majors == null) {
+	private BooleanExpression majorFilter(Major major) {
+		if (major == null) {
 			return null;
 		}
 
-		return profile.information.major.in(majors);
+		return profile.information.major.eq(major);
 	}
 
 	private BooleanExpression recruitedFilter(Boolean isRecruited) {

main-server/src/main/java/com/sickgyun/server/profile/presentation/dto/FilterRequest.java

@@ -1,7 +1,5 @@
 package com.sickgyun.server.profile.presentation.dto;
 
-import java.util.List;
-
 import org.springframework.web.bind.annotation.RequestParam;
 
 import com.sickgyun.server.profile.domain.value.Filter;
@@ -11,14 +9,14 @@ public record FilterRequest(
 	@RequestParam(required = false)
 	Boolean isRecruited,
 	@RequestParam(required = false)
-	List<Major> majors,
+	Major major,
 	@RequestParam(required = false)
 	Long cardinal
 ) {
 	public Filter toDomain() {
 		return new Filter(
 			isRecruited,
-			majors,
+			major,
 			cardinal
 		);
 	}

main-server/src/test/java/com/sickgyun/server/profile/service/QueryProfileServiceTest.java

@@ -94,11 +94,11 @@ public class QueryProfileServiceTest extends ServiceTest {
 	}
 
 	private List<Profile> 전공이_ETC인_사람() {
-		return queryProfileService.readAll(new Filter(null, List.of(Major.ETC), null));
+		return queryProfileService.readAll(new Filter(null, Major.ETC, null));
 	}
 
 	private List<Profile> 전공이_GAME_혹은_BACKEND_이고_취업한_사람() {
-		return queryProfileService.readAll(new Filter(true, List.of(Major.GAME, Major.BACKEND), null));
+		return queryProfileService.readAll(new Filter(true, Major.GAME, null));
 	}
 
 	private List<Profile> 입학년도가_2021년인_사람_조회() {