Scaffold signin and signup authentication endpoints for a project. Use when the user wants to add authentication, create login/register flows, or set up auth from scratch.
$npx -y skills add himself65/auth-spec --skill create-authInstalls into the current project.
Run `npx skills use "https://github.com/himself65/auth-spec" --skill "himself65/auth-spec/create-auth"` and follow the generated skill instructions now. Read its complete output, redirecting it to a temporary file first if necessary. Resolve relative paths from the supporting-files directory it provides.
Use the skills in "https://github.com/himself65/auth-spec" that are relevant to the current task. Run `npx skills add "https://github.com/himself65/auth-spec"` and select the relevant skills, then follow their instructions.