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SurveyJS
Open-Source JSON Form Builder to Create Dynamic Forms Right in Your App. With SurveyJS form UI libraries, you can build and style forms in a fully-integrated drag & drop form builder, render them in your JS app, and store form submission data in any backend, inc. PHP, ASP.NET Core, and Node.js.
This article is interesting as it seems "the long way around": the Z-Machine is rather well documented, and already has VMs for the web [1] and going to the ZIL source to build a port of the ZIL itself rather than to interpret the Z-Machine binary is cool, I suppose, but ignores decades of insights into the Z-Machine.
While I'm being a downer, also need to point out that while the Internet Archive has archived the ZIL source code the Zork games are still under copyright and owned by Activision Blizzard (soon/now Microsoft). Using Zork itself as a deployment artifact is a possible way to get sued even if you think the game "abandonware".
[1] The best known/maintained is Parchment: https://github.com/curiousdannii/parchment