Prelude + Just

The Justfile stays the canonical owner of task semantics; Prelude imports it at runtime — recipes are never copied into prelude.commands. Treat the user's request as the specification, never as shell text to interpolate. Bind every recipe to the project's real canonical command — the invocation the tool owner already uses (bun run test, go test ./..., nix flake check) — and confirm it actually exists in the repo before writing it; never invent placeholder scripts.

Enable the import (once)

In the flake-parts module (sidecar prelude.nix or inline configuration):