Dev log

• 4/29: Basic idea implemented. Still figuring out the flow of the game and what's "fun".
• 5/1: Corrected cell arithmetic and added basic validation.
• 5/4: Added visualization for grid operations.
  • Need to decide if the overlap logic is worth keeping. Overlap seems interesting enough.
• 5/7: Added basic null and adjacency error styling.
  • For adjacency errors, find something more visually interesting.
• 5/25: Relaxed operator placement, and refreshed cell styling. It's now possible to "unlock" the puzzle and win.