docs: Add detailed registry modification documentation to README files

- Added comprehensive explanation of MachineGuid registry modification in both English and Chinese README files
- Included safety measures, potential impacts, and recovery steps for registry changes
- Updated Windows PowerShell script to provide additional registry modification information
- Enhanced user awareness about system-level modifications and their implications

README.md

@@ -375,6 +375,40 @@ macOS/Linux users can try to locate similar `cursor-updater` directory in their
 - ✅ Error handling and recovery
 </details>
 
+<details>
+<summary><b>Registry Modification Notice</b></summary>
+
+> ⚠️ **Important: This tool modifies the Windows Registry**
+
+#### Modified Registry
+- Path: `Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Cryptography`
+- Key: `MachineGuid`
+
+#### Potential Impact
+Modifying this registry key may affect:
+- Windows system's unique device identification
+- Device recognition and authorization status of certain software
+- System features based on hardware identification
+
+#### Safety Measures
+1. Automatic Backup
+   - Original value is automatically backed up before modification
+   - Backup location: `%APPDATA%\Cursor\User\globalStorage\backups`
+   - Backup file format: `MachineGuid.backup_YYYYMMDD_HHMMSS`
+
+2. Manual Recovery Steps
+   - Open Registry Editor (regedit)
+   - Navigate to: `Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Cryptography`
+   - Right-click on `MachineGuid`
+   - Select "Modify"
+   - Paste the value from backup file
+
+#### Important Notes
+- Verify backup file existence before modification
+- Use backup file to restore original value if needed
+- Administrator privileges required for registry modification
+</details>
+
 ---
 
 ### 📚 Recommended Reading

README_CN.md

@@ -304,6 +304,40 @@ winget install --id Microsoft.PowerShell --source winget
 
 ### 🔧 技术细节
 
+<details>
+<summary><b>注册表修改说明</b></summary>
+
+> ⚠️ **重要提示：本工具会修改系统注册表**
+
+#### 修改内容
+- 路径：`计算机\HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Cryptography`
+- 项目：`MachineGuid`
+
+#### 潜在影响
+修改此注册表项可能会影响：
+- Windows 系统对设备的唯一标识
+- 某些软件的设备识别和授权状态
+- 基于硬件标识的系统功能
+
+#### 安全措施
+1. 自动备份
+   - 每次修改前会自动备份原始值
+   - 备份保存在：`%APPDATA%\Cursor\User\globalStorage\backups`
+   - 备份文件格式：`MachineGuid.backup_YYYYMMDD_HHMMSS`
+
+2. 手动恢复方法
+   - 打开注册表编辑器（regedit）
+   - 定位到：`计算机\HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Cryptography`
+   - 右键点击 `MachineGuid`
+   - 选择"修改"
+   - 粘贴备份文件中的值
+
+#### 注意事项
+- 建议在修改前先确认备份文件的存在
+- 如遇问题可通过备份文件恢复原始值
+- 必须以管理员权限运行才能修改注册表
+</details>
+
 <details>
 <summary><b>配置文件</b></summary>
 

scripts/run/cursor_win_id_modifier.ps1

@@ -203,6 +203,8 @@ function Update-MachineGuid {
         Set-ItemProperty -Path $registryPath -Name "MachineGuid" -Value $newMachineGuid
         Write-Host "$GREEN[信息]$NC 已更新系统 MachineGuid: $newMachineGuid"
         Write-Host "$GREEN[信息]$NC 原始值已备份至: $backupFile"
+        Write-Host "$GREEN[信息]$NC 注册表路径: 计算机\HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Cryptography"
+        Write-Host "$GREEN[信息]$NC 注册表项名: MachineGuid"
     }
     catch {
         Write-Host "$RED[错误]$NC 更新系统 MachineGuid 失败: $_"