By: Lucien Huber <im@lcnbr.ch>
use the official Symbolica Typst payload repository Fetch the shared Atom payload and CI interoperability checkout from symbolica-dev/symbolica-typst-plugin. Keep the existing 4aab37aa revision, which belongs to the official repository history, preserving its code, plugin assets, payload protocol, and Symbolica 3.0 dependencies. User request: for tymbolica atom payload can you point to [https://github.com/symbolica-dev/symbolica-typst-plugin](https://github.com/symbolica-dev/symbolica-typst-plugin)?