Well done, this is fun! I think it would be nice to use the cursor to indicate if the app is currently in pencil or solve mode. And one small bug report, gg only works like 33-50% of the time for me.
That's a great idea. Do you think I should change the color of the active cell depending on the mode? There is currently an indicator in the status bar - what do you think about that?
Fixed the gg bug! Earlier it worked if you typed two gs within 700ms. New implementation emulates Vim by waiting for the next character.
I use a block cursor for visual mode & a thin cursor for insert mode so I'd prefer something like that, either changing to a text field cursor in solve mode or maybe adding a underline so that it looks like it's a one character input field in the cell. But color works too! I saw the status bar indicator but it felt a bit distracting that I had to look away from the grid every time to confirm that I'm in the right mode
