Collapse four duplicated host+auth client-building blocks into a single
ProxmoxClient.from_server() classmethod (the canonical source of truth):
- _helpers._get_proxmox_client now delegates to from_server (107 callers
untouched)
- ipam._build_proxmox_client removed; its one call site uses from_server
- task_queue_service keeps its per-server cache pool, builds via from_server
- monitoring_worker keeps its ValueError-on-missing-auth contract, builds
via from_server
Behaviour preserved (token-first, then password; non-default port appended).
Verified: containers rebuild healthy, smoke test of both auth paths passes.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>