docs: update release notes with ipa and chat history

README.md

@@ -31,7 +31,9 @@ PhoneClaw 是一个运行在 iPhone 上的本地 AI Agent。它使用 Gemma 4
 
 - 新增语音功能，支持录音发送，并可对语音内容进行分析和识别
 - 新增思考模式，可在聊天页右上角按需开启
+- 新增历史会话记录，支持新会话、切换会话和删除会话
 - 优化了内存管理与推理预算，长回答、多模态和模型切换场景更稳定
+- 已提供可自签安装的空壳 IPA，可从 GitHub Releases 下载
 
 ## 2026-04-06 更新
 

README_EN.md

@@ -27,6 +27,14 @@ A local AI Agent for iPhone. Offline. Private. Native.
 
 PhoneClaw is a local AI Agent that runs entirely on your iPhone. No internet connection. No data uploads. No cloud dependency.
 
+## 2026-04-07 Update
+
+- Added voice input, with on-device audio analysis and recognition
+- Added Thinking Mode, available from the top-right corner in chat
+- Added chat history, with support for new sessions, switching, and deletion
+- Improved memory management and inference budgeting for long answers, multimodal requests, and model switching
+- Added a self-signable shell IPA, available from GitHub Releases
+
 ## 2026-04-06 Update
 
 - The default install flow is back to a shell app, with models downloaded on-device as needed