Could extract the toolkit into its own package and publish a CLI as a pdfkit alternative, so could run it like `npx bentopdf-cli merge {}`.

Why is there not one PDF tool that edits text directly? I didn't find one.

Regarding "Important Notice on Third-Party Components": You are including AGPL components in your project which itself is AGPL.

Even if you distribute your part of the code under the commercial license, the components make - depending on how they are integrated into BentoPDF - the whole project AGPL again. So it might be possible that all your commercial customers are breaking the AGPL of the included components. For example, if your code directly calls code in the components, the integration is tight and AGPL would most certainly apply. If all you do is call the components as external binaries, then it is fine.