OK finally I created a playable version which you can see here: jonpoischen.github.io
Unfortunately there is no UI just yet, so you will need to follow the on-screen instructions in the upper left. Don't press Spacebar until you've moved all your units / don't want to move any more units. Once I add UI it will be much smoother but for now should be 100% playable.
Essentially just click on any non-gray unit, right click to show where they can move, middle click to make them wait, spacebar to end your turn (which you need to do manually as well).
I haven't implemented a Game Over or victory condition either, but the rules are simple: If your Lord dies, its Game Over. If you kill all the enemies, you win the map!