chore(doc):Added multi-receiver support bullets in both READMEs and indexed the Chinese README in the AI playbook.

README.md

@@ -20,8 +20,9 @@ We believe everyone should have control over their own data. PrivyDrop was creat
 
 ## ✨ Key Features
 
-- 🔄 **Unlimited File Transfer** - Support files of any size through Chrome's direct-to-disk streaming (Need to set the save directory)
 - 🔒 **End-to-End Encryption**: Leverages P2P direct connections via WebRTC. All files and text are transferred directly between browsers without passing through any central server.
+- 🔄 **Unlimited File Transfer** - Support files of any size through Chrome's direct-to-disk streaming (Need to set the save directory)
+- 👥 **Multi-receiver Support** - A single room can have multiple receivers simultaneously downloading files/text, and newcomers can join without disrupting ongoing transfers.
 - 📂 **File & Folder Transfer**: Supports transferring multiple files and entire folders.
 - ⏸️ **Resume Transfer**: Resume file transfer from the point of interruption. Simply set the save directory to enable this feature, ensuring your large files are delivered safely even with unstable networks. If interrupted, you currently need to refresh both the sender and receiver web pages to restart the transfer.
 - ⚡ **Real-time & Efficient**: Displays real-time transfer progress and automatically calculates transfer speed.

README.zh-CN.md

@@ -20,8 +20,9 @@ PrivyDrop (原 SecureShare) 是一个基于 WebRTC 的开源点对点（P2P）
 
 ## ✨ 主要特性
 
-- 🔄 **无限制文件传输** - 支持任意大小文件传输，通过 Chrome 的流式保存到磁盘功能实现（需设置保存目录）
 - 🔒 **端到端加密**: 基于 WebRTC 的 P2P 直连技术，所有文件和文本在浏览器间直接传输，不经过任何中央服务器。
+- 🔄 **无限制文件传输** - 支持任意大小文件传输，通过 Chrome 的流式保存到磁盘功能实现（需设置保存目录）
+- 👥 **多接收端支持** - 单个房间可同时让多个接收端并行获取文件/文本，加入房间不会中断正在进行的传输。
 - 📂 **文件与文件夹传输**: 支持多文件和整个文件夹的传输。
 - ⏸️ **断点续传**: 自动从中断处恢复文件传输。只需设置保存目录即可启用此功能，确保即使在网络不稳定的情况下，您的大文件也能安全送达。如果中断，目前需要同时刷新发送端和接收端网页，重新开始传输即可。
 - ⚡ **实时高效**: 实时显示传输进度、自动计算传输速度。

docs/ai-playbook/index.zh-CN.md

@@ -11,6 +11,10 @@
 
 ## 文档索引
 
+- README
+
+  - `README.zh-CN.md`
+
 - AI Playbook
 
   - 代码地图：`docs/ai-playbook/code-map.zh-CN.md`