Okay, let's see. The user wants to port the architect/headscale.nix to a module. The existing code is in the architect directory, and they want to move it to a module structure.
First, I need to understand what the original file does. It seems to be configuring Headscale with specific settings, ports, and vhost configurations. The new module should encapsulate these settings into a reusable module.
Looking at the diffs, the new module is created under modules/services/headscale.nix. The module defines options for enabling the service, package, domain, port, and settings. The config section sets up the service, vhost, and firewall rules.
The commit message needs to be concise. The type is 'refactor' because it's restructuring the code into a module. The description should mention moving the configuration to a module and making it reusable. Keeping it under 72 characters.
So, "refactor: move headscale configuration to a reusable module" seems appropriate. It starts with 'refactor', uses imperative mood, and is within the character limit.
</think>
refactor: move headscale configuration to a reusable module
