This is fantastic. To me, this is one of the greatest side-effects of agentic coding; adding new functionality to vintage, abandoned or obsolete hardware. It gives me hope for a solarpunk future where e-waste gets a more functional second life.
Apple keeps changing the name of their desktop operating system, so Hacker News has some sort of filter to automatically change "Mac OS" to whatever the newest name is in order to fit Apple's brand guidelines. This has the consequence of making some submission titles read as anachronistic when the sumission is about an old OS version.
Cool! I've been wondering for some time if a good low-distraction but pleasant environment could be an old Mac OS on a (good looking) Hackintosh. The UI was baked with UX research at least.
Also, the branding was "Mac OS 9".