Explica cómo crear y registrar mods en FacturaScripts para modificar visualmente o en el controlador los documentos de compra y venta (presupuestos, pedidos, albaranes, facturas).
$npx -y skills add facturascripts/fs-claude-plugin --skill modsInstalls into the current project.
Run `npx skills use "https://github.com/facturascripts/fs-claude-plugin" --skill "facturascripts/fs-claude-plugin/mods"` 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/facturascripts/fs-claude-plugin" that are relevant to the current task. Run `npx skills add "https://github.com/facturascripts/fs-claude-plugin"` and select the relevant skills, then follow their instructions.