Neat!
Anyway, stuff that you didn't post as bugs:
- Scythes do not appear to gain any stat increases.
- Fever appears to quad-trigger even when that doesn't really make sense.
- You mentioned the plinth oddities before entering a room causing a softlock, but specifically, double-card interactions appear to layer in a bad way. An example: I was in the green pool room and used a plinth card. It pulled me into the plinth, which triggered the loss effect from the green pool room. It showed me my explore hand (!), and then when I selected "No Thanks", it ate the leftmost card. Did that twice, eating my entire 2 card hand, and caused a softlock as I lost my Bash option because of it. I believe what happened is that the two dialogues ran concurrently and one tried to force the other to end, causing it to jump back to my explore hand, but didn't actually stop the other. But that's just a guess. Still not 100% why both cards disappeared.