Author here. I forked this Home Assistant calendar card 6 years ago when the original went unmaintained for 18 months. It's now ~1,700 commits in, 629 stars, and I've kept it running alongside a day job the whole time.

The post is mostly the non-obvious stuff: why backwards compatibility matters more than features, how keeping pace with a monthly-releasing platform shapes everything, and the burnout management that nobody warns you about when you take on someone else's abandoned code.

Happy to go deep on any of it, the maintainer-burnout angle, HACS/TypeScript specifics, or the "should you even fork it" decision.