Edit a YAML file, save, the next agent turn uses the new config. No process restart, no re-imports, no rebuilt session state. On Digitorn hot reload runs in around 200ms, which is the difference between iterating on a prompt fluidly and batching changes because the loop is too slow. The single biggest productivity win of declarative agents.
Engineering notes from the Digitorn team. No marketing, no launch announcements, no "10 prompts that will change your life". Just the things we write that we'd want to read.