I've actually been using this to build a local file search agent. I started building it on the Go version of Antfly, but the new Zig runtime is a huge improvement (better resource utilization, reliability, recovery, ...)

Anyone who has used Spotlight search on macOS knows that (1) it can be an absolute resource hog, and (2) it's relatively useless (even with Siri stuff they added in macOS 27). So I was eager to take a stab at a native app that did both better and kept everything on-device (no external inference providers), and building it on Antfly meant I could run it all from one engine (way simpler to coordinate than a whole RAG pipeline).

[Disclaimer: I work at Antfly. The local search app is in preview now at searchaf.com. We plan on open-sourcing it soon (probably with its own Show HN post), as a handy reference architecture.]