Proxmox Connector Refactoring for WiseCP

I already run everything through WiseCP and I want to keep it that way, yet the best-featured Proxmox connector I own is the open-source WHMCS module from ModulesGarden. Your task is to refactor that codebase so it installs natively as a WiseCP module, while preserving every feature I rely on today—server management, VM creation and management, and full backup/restore control. No extra bells and whistles are required; I just need the existing toolset operating smoothly inside my WiseCP panel.

All work must respect the official resources below:
• Proxmox VE API reference: https://pve.proxmox.com/pve-docs/api-viewer/index.html
• Original WHMCS module: https://www.modulesgarden.com/products/whmcs/proxmox-ve-vps-and-cloud
• WiseCP module development guidelines: https://www.wisecp.com/documentation/modules

Deliverables
- A clean WiseCP module package ready to drop into /modules/ with no manual code edits.
- Fully implemented functions for server creation, power actions, console, re-install, snapshot/backup, and restore, matching WHMCS behaviour feature-for-feature.
- Configuration UI inside WiseCP admin that mirrors existing WHMCS options (node selection, resource limits, ISO lists, etc.).
- Step-by-step install/update instructions and brief developer comments so future upgrades are straightforward.
- Confirmation testing on the latest WiseCP release showing successful VM lifecycle, backup, and restore operations.

Hand the module over as a ZIP or Git repo; I will deploy it on a staging environment and run my own checks before signing off.