Walk the user through new Thoth features since their last onboarding
$npx -y skills add acertainknight/project-thoth --skill whats-newInstalls into the current project.
Run `npx skills use "https://github.com/acertainknight/project-thoth" --skill "acertainknight/project-thoth/whats-new"` 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/acertainknight/project-thoth" that are relevant to the current task. Run `npx skills add "https://github.com/acertainknight/project-thoth"` and select the relevant skills, then follow their instructions.