create_vm_with_import got the display name ('Ubuntu 22.04 LTS (Jammy) Cloud')
which PVE rejects (Parameter verification failed on 'name'). Sanitize to a
DNS-safe name (e.g. ubuntu-22-04-lts-jammy-cloud). Also stop attributing every
create failure to 'import unsupported' — only say that when the error mentions
import; otherwise surface the real error.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>