My mind has been far too focused on this project, but the good news is that a live demo is now available to play! It works on both desktop and mobile, and allows for either a hotseat mode or online play. Feel free to check it out and let me know what you think.
https://warsofthejuriels.netlify.com
Information about the current state of the game can be found on the GitHub repo page in the Readme: https://github.com/lindsaykwardell/wars-of-the-juriels