refactor(project): replace mechanical constructors with Lombok

src/main/java/com/lab/labtimesheet/feature/project/controller/ProjectController.java

@@ -8,6 +8,7 @@ import com.lab.labtimesheet.feature.project.service.ProjectQueryService;
 import com.lab.labtimesheet.feature.project.service.ProjectService;
 import jakarta.validation.Valid;
 import java.security.Principal;
+import lombok.RequiredArgsConstructor;
 import org.springframework.stereotype.Controller;
 import org.springframework.ui.Model;
 import org.springframework.validation.BindingResult;
@@ -27,22 +28,12 @@ import org.springframework.web.bind.annotation.RequestMapping;
  */
 @Controller
 @RequestMapping("/projects")
+@RequiredArgsConstructor
 public class ProjectController {
 
     private final ProjectQueryService pages;
     private final ProjectService projects;
 
-    /**
-     * Creates the MVC adapter for Project queries and mutations.
-     *
-     * @param pages authorized Project read operations
-     * @param projects transactional Project mutation operations
-     */
-    public ProjectController(ProjectQueryService pages, ProjectService projects) {
-        this.pages = pages;
-        this.projects = projects;
-    }
-
     /**
      * Lists only Projects visible to the authenticated actor and exposes Project creation only
      * to Mentors.

src/main/java/com/lab/labtimesheet/feature/project/exception/ProjectControllerAdvice.java

@@ -17,10 +17,6 @@ import org.springframework.web.servlet.ModelAndView;
 @ControllerAdvice(assignableTypes = ProjectController.class)
 public class ProjectControllerAdvice {
 
-    /** Creates the stateless Project exception-to-view adapter. */
-    public ProjectControllerAdvice() {
-    }
-
     /**
      * Hides whether a requested Project or nested resource exists.
      *

src/main/java/com/lab/labtimesheet/feature/project/model/entity/ProjectEntity.java

@@ -22,6 +22,8 @@ import java.util.ArrayList;
 import java.util.List;
 import java.util.Objects;
 import java.util.Set;
+import lombok.AccessLevel;
+import lombok.NoArgsConstructor;
 
 /**
  * JPA aggregate root for Project lifecycle, membership intervals, and leadership intervals.
@@ -32,6 +34,7 @@ import java.util.Set;
  */
 @Entity
 @Table(name = "projects")
+@NoArgsConstructor(access = AccessLevel.PROTECTED)
 public class ProjectEntity {
 
     @Id
@@ -75,10 +78,6 @@ public class ProjectEntity {
     @Version
     private long version;
 
-    /** Constructor reserved for JPA materialization. */
-    protected ProjectEntity() {
-    }
-
     private ProjectEntity(
             long mentorUserId,
             String name,

src/main/java/com/lab/labtimesheet/feature/project/model/entity/ProjectLeadershipTermEntity.java

@@ -11,6 +11,8 @@ import jakarta.persistence.JoinColumn;
 import jakarta.persistence.ManyToOne;
 import jakarta.persistence.Table;
 import java.time.Instant;
+import lombok.AccessLevel;
+import lombok.NoArgsConstructor;
 
 /**
  * JPA leadership interval attached to an active same-Project membership.
@@ -20,6 +22,7 @@ import java.time.Instant;
  */
 @Entity
 @Table(name = "project_leadership_terms")
+@NoArgsConstructor(access = AccessLevel.PROTECTED)
 public class ProjectLeadershipTermEntity {
 
     @Id
@@ -46,10 +49,6 @@ public class ProjectLeadershipTermEntity {
     @Column(name = "ended_by_mentor_user_id")
     private Long endedByMentorUserId;
 
-    /** Constructor reserved for JPA materialization. */
-    protected ProjectLeadershipTermEntity() {
-    }
-
     ProjectLeadershipTermEntity(
             ProjectEntity project,
             ProjectMembershipEntity membership,

src/main/java/com/lab/labtimesheet/feature/project/model/entity/ProjectMembershipEntity.java

@@ -11,6 +11,8 @@ import jakarta.persistence.ManyToOne;
 import jakarta.persistence.Table;
 import jakarta.persistence.Version;
 import java.time.Instant;
+import lombok.AccessLevel;
+import lombok.NoArgsConstructor;
 
 /**
  * JPA membership interval linking one Intern to one Project.
@@ -20,6 +22,7 @@ import java.time.Instant;
  */
 @Entity
 @Table(name = "project_memberships")
+@NoArgsConstructor(access = AccessLevel.PROTECTED)
 public class ProjectMembershipEntity {
 
     @Id
@@ -48,10 +51,6 @@ public class ProjectMembershipEntity {
     @Version
     private long version;
 
-    /** Constructor reserved for JPA materialization. */
-    protected ProjectMembershipEntity() {
-    }
-
     ProjectMembershipEntity(ProjectEntity project, long internUserId, Instant joinedAt, long addedByUserId) {
         this.project = project;
         this.internUserId = internUserId;

src/main/java/com/lab/labtimesheet/feature/project/service/ProjectQueryService.java

@@ -15,6 +15,7 @@ import com.lab.labtimesheet.feature.project.model.dto.ProjectTaskMemberView;
 import com.lab.labtimesheet.feature.project.model.entity.ProjectEntity;
 import com.lab.labtimesheet.feature.project.repository.ProjectRepository;
 import java.util.List;
+import lombok.RequiredArgsConstructor;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 
@@ -26,22 +27,12 @@ import org.springframework.transaction.annotation.Transactional;
  * members but expose no current Leader or active-member context.
  */
 @Service
+@RequiredArgsConstructor
 public class ProjectQueryService {
 
     private final ProjectRepository projects;
     private final AccountService accounts;
 
-    /**
-     * Creates the Project read service.
-     *
-     * @param projects Project aggregate repository
-     * @param accounts public Account identity and internship-eligibility boundary
-     */
-    public ProjectQueryService(ProjectRepository projects, AccountService accounts) {
-        this.projects = projects;
-        this.accounts = accounts;
-    }
-
     /**
      * Resolves an active authenticated account to its stable user identifier.
      *

src/main/java/com/lab/labtimesheet/feature/project/service/ProjectService.java

@@ -11,6 +11,7 @@ import com.lab.labtimesheet.feature.task.service.TaskQueryService;
 import java.time.Clock;
 import java.util.Set;
 import java.util.stream.Collectors;
+import lombok.RequiredArgsConstructor;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 
@@ -22,6 +23,7 @@ import org.springframework.transaction.annotation.Transactional;
  * imports their repositories or entities.
  */
 @Service
+@RequiredArgsConstructor
 public class ProjectService {
 
     private final ProjectRepository projects;
@@ -30,28 +32,6 @@ public class ProjectService {
     private final TaskQueryService taskQueries;
     private final Clock clock;
 
-    /**
-     * Creates the Project mutation service.
-     *
-     * @param projects Project aggregate repository
-     * @param accounts public Account identity and eligibility boundary
-     * @param queries DTO-only Project query boundary reused for locked Task context
-     * @param taskQueries public Task activation-guard boundary
-     * @param clock server clock supplying persisted mutation instants
-     */
-    public ProjectService(
-            ProjectRepository projects,
-            AccountService accounts,
-            ProjectQueryService queries,
-            TaskQueryService taskQueries,
-            Clock clock) {
-        this.projects = projects;
-        this.accounts = accounts;
-        this.queries = queries;
-        this.taskQueries = taskQueries;
-        this.clock = clock;
-    }
-
     /**
      * Atomically creates a planned Mentor-owned Project, eligible initial membership, and first
      * leadership term. {@code saveAndFlush} exposes database invariant violations before commit.