feat: 切换管理端聊天记录至智能体会话

- 管理端固定筛选 Agent 会话并拒绝旧 Bot 历史访问

- 筛选候选及页面语义切换为智能体并补充前后端回归测试

easyflow-modules/easyflow-module-chatlog/src/main/java/tech/easyflow/chatlog/service/impl/ChatHistoryManageServiceImpl.java

@@ -21,6 +21,8 @@ import java.math.BigInteger;
 @Service
 public class ChatHistoryManageServiceImpl implements ChatHistoryManageService {
 
+    private static final String ADMIN_ASSISTANT_CODE = "AGENT";
+
     private final ChatSessionQueryService chatSessionQueryService;
     private final ChatSessionCommandService chatSessionCommandService;
     private final ChatHistoryQueryService chatHistoryQueryService;
@@ -46,7 +48,10 @@ public class ChatHistoryManageServiceImpl implements ChatHistoryManageService {
 
     @Override
     public ChatSessionPage queryAdminSessions(ChatSessionFilterQuery query) {
-        return chatAnalyticalDBRepository.pageSessions(query);
+        ChatSessionFilterQuery effectiveQuery = query == null ? new ChatSessionFilterQuery() : query;
+        // 管理端聊天历史已经切换为 Agent 专属入口，类型由服务端固定，避免客户端绕过。
+        effectiveQuery.setAssistantCode(ADMIN_ASSISTANT_CODE);
+        return chatAnalyticalDBRepository.pageSessions(effectiveQuery);
     }
 
     @Override
@@ -64,8 +69,10 @@ public class ChatHistoryManageServiceImpl implements ChatHistoryManageService {
     @Override
     public ChatSessionSummary getAdminSession(BigInteger sessionId) {
         ChatSessionSummary summary = chatAnalyticalDBRepository.getSession(sessionId);
-        if (summary == null || summary.getIsDeleted() != null && summary.getIsDeleted() == 1) {
-            throw new BusinessException("会话不存在");
+        if (summary == null
+                || Integer.valueOf(1).equals(summary.getIsDeleted())
+                || !ADMIN_ASSISTANT_CODE.equals(summary.getAssistantCode())) {
+            throw new BusinessException("Agent 会话不存在");
         }
         return summary;
     }