feat: 统一列表模糊搜索行为

- 统一管理端和用户中心搜索参数及多字段包含匹配

- 修复聊天搜索竞态并优化部门重名路径展示

- 补充部门展开、模型空白词和聊天查询回归测试

easyflow-modules/easyflow-module-chatlog/src/test/java/tech/easyflow/chatlog/service/impl/ChatSessionQueryServiceImplTest.java

@@ -69,6 +69,27 @@ public class ChatSessionQueryServiceImplTest {
         Assert.assertEquals("AGENT", sessionRepository.capturedCountAssistantCode);
     }
 
+    /**
+     * 会话关键词必须同时下推到列表和计数查询，保证分页总数一致。
+     */
+    @Test
+    public void pageSessionsShouldPassKeywordToListAndCountQueries() {
+        FakeSessionRepository sessionRepository = new FakeSessionRepository();
+        ChatSessionQueryServiceImpl service = new ChatSessionQueryServiceImpl(
+                sessionRepository,
+                new FakeLogRepository(),
+                new FakeTableManager(List.of()),
+                new FakeHotStateService()
+        );
+        ChatPageQuery query = new ChatPageQuery();
+        query.setKeyword("最近消息");
+
+        service.pageSessions(BigInteger.valueOf(7), null, query);
+
+        Assert.assertSame(query, sessionRepository.capturedListQuery);
+        Assert.assertSame(query, sessionRepository.capturedCountQuery);
+    }
+
     /**
      * 工作台消息分页必须走 MySQL 热表主线查询，并保持分页参数语义。
      */
@@ -147,6 +168,8 @@ public class ChatSessionQueryServiceImplTest {
         private int listSessionsCalls;
         private String capturedListAssistantCode;
         private String capturedCountAssistantCode;
+        private ChatPageQuery capturedListQuery;
+        private ChatPageQuery capturedCountQuery;
         private ChatSessionSummary summary;
         private List<ChatSessionSummary> sessions = new ArrayList<>();
 
@@ -163,6 +186,7 @@ public class ChatSessionQueryServiceImplTest {
         public List<ChatSessionSummary> listSessions(BigInteger userId, BigInteger assistantId, String assistantCode, ChatPageQuery query) {
             listSessionsCalls += 1;
             capturedListAssistantCode = assistantCode;
+            capturedListQuery = query;
             return sessions;
         }
 
@@ -173,8 +197,15 @@ public class ChatSessionQueryServiceImplTest {
 
         @Override
         public long countSessions(BigInteger userId, BigInteger assistantId, String assistantCode) {
+            return countSessions(userId, assistantId, assistantCode, null);
+        }
+
+        @Override
+        public long countSessions(BigInteger userId, BigInteger assistantId,
+                                  String assistantCode, ChatPageQuery query) {
             countSessionsCalls += 1;
             capturedCountAssistantCode = assistantCode;
+            capturedCountQuery = query;
             return count;
         }