Advent of Code 2025

At the suggestion of a co-worker, I'm participating in the Advent of Code for 2025, and thiss repo will have my solutions.

While I plan to do some of these in different languages, I'm 2 days in and so far, it's 100% JavaScript (my preferred language over the decade or so, and the one I work in the most).

Each day should have instructions for running it. Fopr the JS stuff, it's node 22 with no special packages.