[BUG] Can't import Proxmox guests

Title

Can't import Proxmox guests

Platform

Website - Chrome

Server Installation Method

Docker

Version

1.7.1

CLI Installation Method

None

CLI Version

No response

Troubleshooting

• I have examined logs and tried to find the issue
• I have reviewed opened and closed issues
• I have tried restarting the application
• I have checked open issues and ensured this is not a duplicate

The Problem

Follow-up to https://github.com/Termix-SSH/Support/issues/1177

Now it's no longer possible to import the proxmox guests. Discovering the guests from proxmox works, but then when actually clicking the import buttons throws an error.

http://IP:8080/host/bulk-import returns

{
    "message": "Import completed: 0 created, 0 updated, 18 failed",
    "success": 0,
    "updated": 0,
    "skipped": 0,
    "failed": 18,
    "errors": [
        "Host 1: Username required for SSH connections",
        "Host 2: Username required for SSH connections",
        "Host 3: Username required for SSH connections",
        "Host 4: Username required for SSH connections",
        "Host 5: Username required for SSH connections",
        "Host 6: Username required for SSH connections",
        "Host 7: Username required for SSH connections",
        "Host 8: Username required for SSH connections",
        "Host 9: Username required for SSH connections",
        "Host 10: Username required for SSH connections",
        "Host 11: Username required for SSH connections",
        "Host 12: Username required for SSH connections",
        "Host 13: Username required for SSH connections",
        "Host 14: Username required for SSH connections",
        "Host 15: Username required for SSH connections",
        "Host 16: NOT NULL constraint failed: ssh_data.username",
        "Host 17: Username required for SSH connections",
        "Host 18: Username required for SSH connections"
    ]
}

How to Reproduce

1. Add a host and mark it as a proxmox node
2. in the hosts overview, click manually on the Discover & import proxmox guests

Additional Context

Since the last ticket I haven't changed anything. So I also have no idea why host 16 has a different error message.

Start by reproducing the Discover & import Proxmox guests flow and inspect the /host/bulk-import endpoint, focusing on how discovered guests are converted into SSH host records. Done means the guests import successfully without the username-required or ssh_data.username constraint errors; verify the result with the reported 18-guest case.