docs: add note about 2 memory management tools alongside 7 atomic tools

README.md

@@ -226,6 +226,8 @@ The entire core loop is just **92 lines of code** (`agent_loop.py`).
 | `web_execute_js` | Control browser behavior |
 | `ask_user` | Human-in-the-loop confirmation |
 
+> Additionally, 2 **memory management tools** (`update_working_checkpoint`, `start_long_term_update`) allow the agent to persist context and accumulate experience across sessions.
+
 4️⃣ **Capability Extension Mechanism**
 > _Capable of dynamically creating new tools._
 
@@ -476,6 +478,8 @@ GenericAgent 通过**分层记忆 × 最小工具集 × 自主执行循环**完
 | `web_execute_js` | 控制浏览器行为 |
 | `ask_user` | 人机协作确认 |
 
+> 此外，还有 2 个**记忆管理工具**（`update_working_checkpoint`、`start_long_term_update`），使 Agent 能够跨会话积累经验、维持持久上下文。
+
 4️⃣ **能力扩展机制**
 > 具备动态创建新的工具能力
 >