A tweak to solve a long-standing issue confusing some newcomers to the game, and a more pleasant game reset flow for everyone.

change: overhauled the dungeon select screen with a more intuitive layout
change: exiting to menu after a loss, victory, or abandoning the run now goes to character select
change: exiting to menu after the tutorial now goes to dungeon select with Goblin Caves selected
change: description now makes it clear that the Knight piece "jumps" instead of "moving"
fix: upgrade icons now properly restore their full scale when going down from 5 upgrades