1.先确认是不是网络/代理问题 
powershell运行：codex doctor --no-color 
如果看到：websocket handshake timed out 
基本就是 Codex 没正确走代理。 
2. 查你当前 VPN/Clash 实际监听的本地端口 
在 PowerShell 运行： 
Get-NetTCPConnection -State Listen -ErrorAction SilentlyContinue | 
ForEach-Object { 
p = Get-Process -Id .OwningProcess -ErrorAction SilentlyContinue 
[PSCustomObject]@{ 
Address = $.LocalAddress 
Port    = $_.LocalPort 
Process = $p.Process...