Overworld Controls:
<- -> △ ▽ - Move
X - Interact, continue dialog
0 - Speed up dialog
Combat controls:
<- -> △ ▽ - Change selection
X - Activate
0 - Cancel Back
Standard Pico-8 keyboard assignments:
Arrow keys = <- -> △ ▽
Z,C,N = 0
X,V,M = X
P,Enter = Pause menu (useful for resetting the game to play it again)
For the best experience, take the time to try interacting with all the objects, too!
Have fun catting around!

Thank you everyone for your support.
Here's my post-jam development diary full disclosure wrap-up thing: