EmailChannelConfigResponseDto

{
    "channelId": "ch-456",
    "channel_type": "email",
    "projectId": "proj-1",
    "isPaused": false,
    "configVersion": "2026-03-28T06:23:36.054Z",
    "smtp": {
        "host": "smtp.example.com",
        "port": 587,
        "secure": true,
        "auth": {
            "user": "user@example.com",
            "pass": "secret"
        }
    }
}