Thanks for playing! If you got the coffee, then you won (despite the lack of any indication)!
Yep, we ran out of time so the map is half-finished. We planned to have a town with a couple different routes you could take through it, but by the end we kind of just threw every area onto one map and teleported the player between coordinates. After you finish the salesman encounter, you get teleported next to the coffee shop. I definitely get how it was disorienting.
Glad you enjoyed the dialogue. For a primarily interactive fiction game, I count that as a win!