feat: 实现会话记忆同步和知识图谱恢复机制

- 添加 memory_compacted SSE 事件处理
- 添加 CompactedMemory/CompactedMessage 类型定义
- 添加 COMPACTION_SUMMARY 消息类型
- 实现压缩数据存储到 conversation.json
- 实现从 conversation.json 构建恢复数据
- 发送请求时附带 knowledgeData 用于恢复知识图谱

src/services/sseHandler.ts

@@ -29,6 +29,7 @@ import type {
   AgentCompleteEvent,
   AgentErrorEvent
 } from '../types/api';
+import type { MemoryCompactedEvent } from '../types/memory';
 
 /**
  * SSE 事件回调接口
@@ -68,6 +69,8 @@ export interface SSECallbacks {
   onAgentComplete?: (data: AgentCompleteEvent) => void;
   /** 子智能体错误 */
   onAgentError?: (data: AgentErrorEvent) => void;
+  /** 记忆压缩完成 */
+  onMemoryCompacted?: (data: MemoryCompactedEvent) => void;
   /** 连接打开 */
   onOpen?: () => void;
   /** 连接关闭 */
@@ -319,6 +322,9 @@ function dispatchEvent(
     case 'agent_error':
       callbacks.onAgentError?.(data as AgentErrorEvent);
       break;
+    case 'memory_compacted':
+      callbacks.onMemoryCompacted?.(data as MemoryCompactedEvent);
+      break;
     default:
       console.log(`[SSE] 未知事件类型: ${eventType}`, data);
   }