feat: add continue/new support to chat frontends

README.md

@@ -115,6 +115,14 @@ python frontends/qtapp.py                # Qt-based desktop app
 streamlit run frontends/stapp2.py        # Alternative Streamlit UI
 ```
 
+### Common Chat Commands
+
+The default Streamlit desktop UI started by `python launch.pyw`, plus the QQ / Feishu / WeCom / DingTalk frontends, support these chat commands:
+
+- `/new` - start a fresh conversation and clear the current context
+- `/continue` - list recoverable conversation snapshots
+- `/continue N` - restore the `N`th recoverable conversation
+
 
 ## 📊 Comparison with Similar Tools
 
@@ -381,6 +389,14 @@ python frontends/qtapp.py                # 基于 Qt 的桌面应用
 streamlit run frontends/stapp2.py        # 另一种 Streamlit 风格 UI
 ```
 
+### 通用聊天命令
+
+默认通过 `python launch.pyw` 启动的 Streamlit 桌面 UI，以及 QQ / 飞书 / 企业微信 / 钉钉前端，都支持以下命令：
+
+- `/new` - 开启新对话并清空当前上下文
+- `/continue` - 列出可恢复会话快照
+- `/continue N` - 恢复第 `N` 个可恢复会话
+
 
 ## 📊 与同类产品对比