Add Xensor (CyCraft) EDR agent install notes

Document the cydroned EDR agent deployed on 106.105.181.40: install
package, three-hop SSH chain, installer behavior, verification commands,
current status, and uninstall. Add docs index to CLAUDE.md.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

CLAUDE.md

@@ -6,6 +6,11 @@ This file provides guidance to Claude Code (claude.ai/code) when working with co
 
 此目錄為伺服器 `106.105.181.40`（SSH 別名: `hospital_media`）的運維筆記，主要記錄 Ant Media Server 的部署與操作資訊。
 
+## 文件索引
+
+- [`hospital_media_antmedia.md`](hospital_media_antmedia.md) — 主機完整運維筆記（容器一覽、Caddy、Ant Media、SSL 憑證、備份）
+- [`xensor_cydroned_edr.md`](xensor_cydroned_edr.md) — CyCraft Xensor EDR agent（`cydroned`）安裝方法、連線跳板與現況
+
 ## 伺服器操作
 
 Ant Media Server 以 Docker 容器方式運行於 `/opt/antmedia`：