update pay function

src/views/AgentChat/hooks/useAgentSessions.ts

@@ -108,6 +108,23 @@ export const useAgentSessions = ({
     }
   }, [user?.id]);
 
+  /**
+   * 安全解析 JSON 字符串，如果已经是对象则直接返回
+   */
+  const safeJsonParse = (value: unknown): unknown => {
+    if (!value) return null;
+    if (typeof value === 'object') return value;
+    if (typeof value === 'string') {
+      try {
+        return JSON.parse(value);
+      } catch {
+        console.warn('JSON 解析失败:', value?.toString().substring(0, 100));
+        return null;
+      }
+    }
+    return null;
+  };
+
   /**
    * 加载指定会话的历史消息
    */
@@ -125,9 +142,9 @@ export const useAgentSessions = ({
           const formattedMessages: Message[] = history.map((msg: any, idx: number) => ({
             id: `${sessionId}-${idx}`,
             type: msg.message_type === 'user' ? MessageTypes.USER : MessageTypes.AGENT_RESPONSE,
-            content: msg.message,
-            plan: msg.plan ? JSON.parse(msg.plan) : null,
-            stepResults: msg.steps ? JSON.parse(msg.steps) : null,
+            content: msg.message || '',
+            plan: safeJsonParse(msg.plan),
+            stepResults: safeJsonParse(msg.steps),
             timestamp: msg.timestamp,
           }));