Day 2 (Tuesday)
Didn't quite get the item management system working yet. To salvage what little time I had today, I focused instead on other parts of the game that needed work. The UI was changed slightly, and the whole game flow is now complete. The player can start a new game after losing or winning, the game can be won, and the levels are generated such that winning is always possible (for now at least).
There isn't much to show for this day though, which is rather unfortunate. My plan for tomorrow is to finish the item system, add some mobs so basic combat works (and the player character can die), and then show some stats for the victory/gameover screen (like how long it took and what was accomplished).