fix: 修复 cacheManager bean 冲突问题

- 重命名 cacheManager bean 为 knowledgeGraphCacheManager 和 dataManagementCacheManager
- 更新所有引用处（@Cacheable、@Qualifier 注解）
- 添加 @Primary 注解到 knowledgeGraphCacheManager 避免多 bean 冲突
- 修复文件：
  - DataManagementConfig.java
  - RedisCacheConfig.java
  - GraphEntityService.java
  - GraphQueryService.java
  - GraphCacheService.java
  - CacheableIntegrationTest.java

backend/services/knowledge-graph-service/src/main/java/com/datamate/knowledgegraph/application/GraphEntityService.java

@@ -63,7 +63,8 @@ public class GraphEntityService {
 
     @Cacheable(value = RedisCacheConfig.CACHE_ENTITIES,
                key = "T(com.datamate.knowledgegraph.infrastructure.cache.GraphCacheService).cacheKey(#graphId, #entityId)",
-               unless = "#result == null")
+               unless = "#result == null",
+               cacheManager = "knowledgeGraphCacheManager")
     public GraphEntity getEntity(String graphId, String entityId) {
         validateGraphId(graphId);
         return entityRepository.findByIdAndGraphId(entityId, graphId)
@@ -71,7 +72,8 @@ public class GraphEntityService {
     }
 
     @Cacheable(value = RedisCacheConfig.CACHE_ENTITIES,
-               key = "T(com.datamate.knowledgegraph.infrastructure.cache.GraphCacheService).cacheKey(#graphId, 'list')")
+               key = "T(com.datamate.knowledgegraph.infrastructure.cache.GraphCacheService).cacheKey(#graphId, 'list')",
+               cacheManager = "knowledgeGraphCacheManager")
     public List<GraphEntity> listEntities(String graphId) {
         validateGraphId(graphId);
         return entityRepository.findByGraphId(graphId);

backend/services/knowledge-graph-service/src/main/java/com/datamate/knowledgegraph/application/GraphQueryService.java

@@ -73,7 +73,8 @@ public class GraphQueryService {
      * @param limit 返回节点数上限
      */
     @Cacheable(value = RedisCacheConfig.CACHE_QUERIES,
-               key = "T(com.datamate.knowledgegraph.infrastructure.cache.GraphCacheService).cacheKey(#graphId, #entityId, #depth, #limit, @resourceAccessService.resolveOwnerFilterUserId(), @resourceAccessService.canViewConfidential())")
+               key = "T(com.datamate.knowledgegraph.infrastructure.cache.GraphCacheService).cacheKey(#graphId, #entityId, #depth, #limit, @resourceAccessService.resolveOwnerFilterUserId(), @resourceAccessService.canViewConfidential())",
+               cacheManager = "knowledgeGraphCacheManager")
     public SubgraphVO getNeighborGraph(String graphId, String entityId, int depth, int limit) {
         validateGraphId(graphId);
         String filterUserId = resolveOwnerFilter();
@@ -573,7 +574,8 @@ public class GraphQueryService {
      * @param query  搜索关键词（支持 Lucene 查询语法）
      */
     @Cacheable(value = RedisCacheConfig.CACHE_SEARCH,
-               key = "T(com.datamate.knowledgegraph.infrastructure.cache.GraphCacheService).cacheKey(#graphId, #query, #page, #size, @resourceAccessService.resolveOwnerFilterUserId(), @resourceAccessService.canViewConfidential())")
+               key = "T(com.datamate.knowledgegraph.infrastructure.cache.GraphCacheService).cacheKey(#graphId, #query, #page, #size, @resourceAccessService.resolveOwnerFilterUserId(), @resourceAccessService.canViewConfidential())",
+               cacheManager = "knowledgeGraphCacheManager")
     public PagedResponse<SearchHitVO> fulltextSearch(String graphId, String query, int page, int size) {
         validateGraphId(graphId);
         String filterUserId = resolveOwnerFilter();

backend/services/knowledge-graph-service/src/main/java/com/datamate/knowledgegraph/infrastructure/cache/GraphCacheService.java

@@ -2,6 +2,7 @@ package com.datamate.knowledgegraph.infrastructure.cache;
 
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.beans.factory.annotation.Qualifier;
 import org.springframework.cache.Cache;
 import org.springframework.cache.CacheManager;
 import org.springframework.data.redis.core.StringRedisTemplate;
@@ -28,7 +29,7 @@ public class GraphCacheService {
     private final CacheManager cacheManager;
     private StringRedisTemplate redisTemplate;
 
-    public GraphCacheService(CacheManager cacheManager) {
+    public GraphCacheService(@Qualifier("knowledgeGraphCacheManager") CacheManager cacheManager) {
         this.cacheManager = cacheManager;
     }
 

backend/services/knowledge-graph-service/src/main/java/com/datamate/knowledgegraph/infrastructure/cache/RedisCacheConfig.java

@@ -7,6 +7,7 @@ import org.springframework.cache.CacheManager;
 import org.springframework.cache.annotation.EnableCaching;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Primary;
 import org.springframework.data.redis.cache.RedisCacheConfiguration;
 import org.springframework.data.redis.cache.RedisCacheManager;
 import org.springframework.data.redis.connection.RedisConnectionFactory;
@@ -43,8 +44,9 @@ public class RedisCacheConfig {
     /** 搜索缓存：全文搜索结果 */
     public static final String CACHE_SEARCH = "kg:search";
 
-    @Bean
-    public CacheManager cacheManager(
+    @Primary
+    @Bean("knowledgeGraphCacheManager")
+    public CacheManager knowledgeGraphCacheManager(
             RedisConnectionFactory connectionFactory,
             KnowledgeGraphProperties properties
     ) {

backend/services/knowledge-graph-service/src/test/java/com/datamate/knowledgegraph/infrastructure/cache/CacheableIntegrationTest.java

@@ -47,8 +47,8 @@ class CacheableIntegrationTest {
     @EnableCaching
     static class Config {
 
-        @Bean
-        CacheManager cacheManager() {
+        @Bean("knowledgeGraphCacheManager")
+        CacheManager knowledgeGraphCacheManager() {
             return new ConcurrentMapCacheManager(
                     RedisCacheConfig.CACHE_ENTITIES,
                     RedisCacheConfig.CACHE_QUERIES,