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I built something like this in Go a few years ago but it reloads your infrastructure when it changes, recompiles your code when it needs to, and syncs static files or interpreted files to wherever your app is running (desktop or cloud). Think of it like docker-compose but with file watching + sync + smart rebuilds. https://skaffold.dev/
If you write your tests with Ginkgo [0] its CLI can do this for you. It also has nice facilities to quickly disable a test or portion of a test by pretending an X to the test function name, or to focus a test (only run that test) by prepending an F. It’s pretty nice.