Oh, wow, I'd love to check out the module! I'm sure you saw the TTS mod for Pistas, but sadly I got 0 scripting skills on TTS, so never considered that as an option for solo. And my sense is that your intuition is correct that FAST would be easier in terms of level of effort and complexity.
Viewing post in Pistas (free 2P print-n-play) jam comments
https://steamcommunity.com/sharedfiles/filedetails/?id=2973525699
This is really a quick and dirty module - I have not looked for Your module earlier (I did not notice it on itch page for the design). Mine is very similar to Yours... only uglier :) ... and I added a marker for "Attack/ Evade" (with a reminder which one involves 'adding' and which one is about 'subtracting').
No scripting. Preparing the TTS module for solo game would require really creating rules for a "bot" side - or sides - and I am not ready for that. I simply wanted to have Your game in a digital format and be able to move pieces and play it... playing both sides to the best of my ability.