Advanced PDF handling.
$npx -y skills add avalan-ai/avalan --skill pdf-advancedInstalls into the current project.
Run `npx skills use "https://github.com/avalan-ai/avalan" --skill "avalan-ai/avalan/pdf-advanced"` 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/avalan-ai/avalan" that are relevant to the current task. Run `npx skills add "https://github.com/avalan-ai/avalan"` and select the relevant skills, then follow their instructions.