diff --git a/server/skillhub-infra/src/main/java/com/iflytek/skillhub/infra/jpa/NamespaceJpaRepository.java b/server/skillhub-infra/src/main/java/com/iflytek/skillhub/infra/jpa/NamespaceJpaRepository.java
index ff4d4948..1b21cc5d 100644
--- a/server/skillhub-infra/src/main/java/com/iflytek/skillhub/infra/jpa/NamespaceJpaRepository.java
+++ b/server/skillhub-infra/src/main/java/com/iflytek/skillhub/infra/jpa/NamespaceJpaRepository.java
@@ -8,11 +8,13 @@ import org.springframework.data.domain.Pageable;
 import org.springframework.data.jpa.repository.JpaRepository;
 import org.springframework.stereotype.Repository;
 
+import java.util.List;
 import java.util.Optional;
 
 @Repository
 public interface NamespaceJpaRepository
         extends JpaRepository<Namespace, Long>, NamespaceRepository {
+    List<Namespace> findByIdIn(List<Long> ids);
     Optional<Namespace> findBySlug(String slug);
     Page<Namespace> findByStatus(NamespaceStatus status, Pageable pageable);
 }
diff --git a/server/skillhub-infra/src/main/java/com/iflytek/skillhub/infra/jpa/NamespaceMemberJpaRepository.java b/server/skillhub-infra/src/main/java/com/iflytek/skillhub/infra/jpa/NamespaceMemberJpaRepository.java
index ddcda523..7a745cc3 100644
--- a/server/skillhub-infra/src/main/java/com/iflytek/skillhub/infra/jpa/NamespaceMemberJpaRepository.java
+++ b/server/skillhub-infra/src/main/java/com/iflytek/skillhub/infra/jpa/NamespaceMemberJpaRepository.java
@@ -13,8 +13,8 @@ import java.util.Optional;
 @Repository
 public interface NamespaceMemberJpaRepository
         extends JpaRepository<NamespaceMember, Long>, NamespaceMemberRepository {
-    Optional<NamespaceMember> findByNamespaceIdAndUserId(Long namespaceId, Long userId);
-    List<NamespaceMember> findByUserId(Long userId);
+    Optional<NamespaceMember> findByNamespaceIdAndUserId(Long namespaceId, String userId);
+    List<NamespaceMember> findByUserId(String userId);
     Page<NamespaceMember> findByNamespaceId(Long namespaceId, Pageable pageable);
-    void deleteByNamespaceIdAndUserId(Long namespaceId, Long userId);
+    void deleteByNamespaceIdAndUserId(Long namespaceId, String userId);
 }
diff --git a/server/skillhub-infra/src/main/java/com/iflytek/skillhub/infra/jpa/PromotionRequestJpaRepository.java b/server/skillhub-infra/src/main/java/com/iflytek/skillhub/infra/jpa/PromotionRequestJpaRepository.java
index c215a6eb..a7b91107 100644
--- a/server/skillhub-infra/src/main/java/com/iflytek/skillhub/infra/jpa/PromotionRequestJpaRepository.java
+++ b/server/skillhub-infra/src/main/java/com/iflytek/skillhub/infra/jpa/PromotionRequestJpaRepository.java
@@ -33,7 +33,7 @@ public interface PromotionRequestJpaRepository extends JpaRepository<PromotionRe
     """)
     int updateStatusWithVersion(@Param("id") Long id,
                                @Param("status") ReviewTaskStatus status,
-                               @Param("reviewedBy") Long reviewedBy,
+                               @Param("reviewedBy") String reviewedBy,
                                @Param("reviewComment") String reviewComment,
                                @Param("targetSkillId") Long targetSkillId,
                                @Param("expectedVersion") Integer expectedVersion);
diff --git a/server/skillhub-infra/src/main/java/com/iflytek/skillhub/infra/jpa/ReviewTaskJpaRepository.java b/server/skillhub-infra/src/main/java/com/iflytek/skillhub/infra/jpa/ReviewTaskJpaRepository.java
index e0ef100b..570dd992 100644
--- a/server/skillhub-infra/src/main/java/com/iflytek/skillhub/infra/jpa/ReviewTaskJpaRepository.java
+++ b/server/skillhub-infra/src/main/java/com/iflytek/skillhub/infra/jpa/ReviewTaskJpaRepository.java
@@ -19,7 +19,7 @@ public interface ReviewTaskJpaRepository extends JpaRepository<ReviewTask, Long>
 
     Page<ReviewTask> findByNamespaceIdAndStatus(Long namespaceId, ReviewTaskStatus status, Pageable pageable);
 
-    Page<ReviewTask> findBySubmittedByAndStatus(Long submittedBy, ReviewTaskStatus status, Pageable pageable);
+    Page<ReviewTask> findBySubmittedByAndStatus(String submittedBy, ReviewTaskStatus status, Pageable pageable);
 
     @Modifying
     @Query("""
@@ -33,7 +33,7 @@ public interface ReviewTaskJpaRepository extends JpaRepository<ReviewTask, Long>
     """)
     int updateStatusWithVersion(@Param("id") Long id,
                                @Param("status") ReviewTaskStatus status,
-                               @Param("reviewedBy") Long reviewedBy,
+                               @Param("reviewedBy") String reviewedBy,
                                @Param("reviewComment") String reviewComment,
                                @Param("expectedVersion") Integer expectedVersion);
 }
diff --git a/server/skillhub-infra/src/main/java/com/iflytek/skillhub/infra/jpa/SkillJpaRepository.java b/server/skillhub-infra/src/main/java/com/iflytek/skillhub/infra/jpa/SkillJpaRepository.java
index 8b093b82..feeda77a 100644
--- a/server/skillhub-infra/src/main/java/com/iflytek/skillhub/infra/jpa/SkillJpaRepository.java
+++ b/server/skillhub-infra/src/main/java/com/iflytek/skillhub/infra/jpa/SkillJpaRepository.java
@@ -16,6 +16,7 @@ import java.util.Optional;
 
 @Repository
 public interface SkillJpaRepository extends JpaRepository<Skill, Long>, SkillRepository {
+    List<Skill> findByIdIn(List<Long> ids);
     Optional<Skill> findByNamespaceIdAndSlug(Long namespaceId, String slug);
 
     @Override
@@ -25,7 +26,7 @@ public interface SkillJpaRepository extends JpaRepository<Skill, Long>, SkillRep
 
     List<Skill> findByNamespaceIdAndStatusOrderByCreatedAtDesc(Long namespaceId, SkillStatus status);
     Page<Skill> findByNamespaceIdAndStatus(Long namespaceId, SkillStatus status, Pageable pageable);
-    List<Skill> findByOwnerId(Long ownerId);
+    List<Skill> findByOwnerId(String ownerId);
 
     @Modifying
     @Query("UPDATE Skill s SET s.downloadCount = s.downloadCount + 1 WHERE s.id = :skillId")
diff --git a/server/skillhub-infra/src/main/java/com/iflytek/skillhub/infra/jpa/SkillSearchDocumentEntity.java b/server/skillhub-infra/src/main/java/com/iflytek/skillhub/infra/jpa/SkillSearchDocumentEntity.java
index b6d83ec9..4eeae924 100644
--- a/server/skillhub-infra/src/main/java/com/iflytek/skillhub/infra/jpa/SkillSearchDocumentEntity.java
+++ b/server/skillhub-infra/src/main/java/com/iflytek/skillhub/infra/jpa/SkillSearchDocumentEntity.java
@@ -21,9 +21,9 @@ public class SkillSearchDocumentEntity {
     private String namespaceSlug;
 
     @Column(name = "owner_id", nullable = false)
-    private Long ownerId;
+    private String ownerId;
 
-    @Column(nullable = false, length = 200)
+    @Column(length = 256)
     private String title;
 
     @Column(columnDefinition = "TEXT")
@@ -51,7 +51,7 @@ public class SkillSearchDocumentEntity {
             Long skillId,
             Long namespaceId,
             String namespaceSlug,
-            Long ownerId,
+            String ownerId,
             String title,
             String summary,
             String keywords,
@@ -93,7 +93,7 @@ public class SkillSearchDocumentEntity {
         return namespaceSlug;
     }
 
-    public Long getOwnerId() {
+    public String getOwnerId() {
         return ownerId;
     }
 
@@ -134,7 +134,7 @@ public class SkillSearchDocumentEntity {
         this.namespaceSlug = namespaceSlug;
     }
 
-    public void setOwnerId(Long ownerId) {
+    public void setOwnerId(String ownerId) {
         this.ownerId = ownerId;
     }
 
diff --git a/server/skillhub-infra/src/main/java/com/iflytek/skillhub/infra/jpa/SkillVersionJpaRepository.java b/server/skillhub-infra/src/main/java/com/iflytek/skillhub/infra/jpa/SkillVersionJpaRepository.java
index 5af5f958..319ec036 100644
--- a/server/skillhub-infra/src/main/java/com/iflytek/skillhub/infra/jpa/SkillVersionJpaRepository.java
+++ b/server/skillhub-infra/src/main/java/com/iflytek/skillhub/infra/jpa/SkillVersionJpaRepository.java
@@ -13,6 +13,7 @@ import java.util.Optional;
 
 @Repository
 public interface SkillVersionJpaRepository extends JpaRepository<SkillVersion, Long>, SkillVersionRepository {
+    List<SkillVersion> findByIdIn(List<Long> ids);
     Optional<SkillVersion> findBySkillIdAndVersion(Long skillId, String version);
 
     @Override
diff --git a/server/skillhub-infra/src/main/java/com/iflytek/skillhub/infra/jpa/UserAccountJpaRepository.java b/server/skillhub-infra/src/main/java/com/iflytek/skillhub/infra/jpa/UserAccountJpaRepository.java
index 2968eccf..4f6e9eb7 100644
--- a/server/skillhub-infra/src/main/java/com/iflytek/skillhub/infra/jpa/UserAccountJpaRepository.java
+++ b/server/skillhub-infra/src/main/java/com/iflytek/skillhub/infra/jpa/UserAccountJpaRepository.java
@@ -7,5 +7,5 @@ import org.springframework.stereotype.Repository;
 
 @Repository
 public interface UserAccountJpaRepository
-        extends JpaRepository<UserAccount, Long>, UserAccountRepository {
+        extends JpaRepository<UserAccount, String>, UserAccountRepository {
 }