First puzzle of 2024. What what. Here's to many more. (Perhaps more than last year. Who knows?)
So, minor spoilers in this paragraph, so continue reading at your own risk: This puzzle's seed entry is one I've been trying to use every December for the past three years, with zero success.... until now. Yes, it's January. I'm a bit miffed about that. And I have the patience of a six-year-old waiting for his turn on the Switch*, so there's no chance of waiting until next December to share this. Especially when there are two other spanners that I've been wanting to use for a while as well.
So uh... enjoy. More commentary on this puzzle in the solution/notes file if you're interested.
Thanks again to Ariel and Quiara for test-solving.
*IDK if this makes sense. In my youth it was the N64.