noahdunnagan/fsearch ? reverse-engineered prompt

Build me a fast macOS file search tool that can look through my whole disk, not just one folder.

I want to be able to find files by name even if I misspell them, and also search inside file contents when I remember a function name or a phrase. It should feel instant for name search, and still stay very fast for content search across a big codebase.

Please make it work as a command line app with a small background process so searches stay quick after the first run. If it makes sense, also include a simple API that coding agents can use, and a way to install it so it runs in the background on my Mac.

It should handle common things like file types, folders, modified files, and regex searches, and it should be smart about skipping stuff it does not need to index. If you need to check current docs for macOS behavior or Rust details, go ahead and look them up.