// lib/util/command-env.mjs
// The environment a check command runs in. The command's exit code must be its
// own: under `node --test` a child inherits NODE_TEST_CONTEXT, and a nested
// `node --test` then reports to that parent and exits 0 whatever its tests did
// (measured 2026-10-06: a red start point read as green). So the variable
// never reaches the command. Used by red-proof.mjs, regression-check.mjs and
// the criteria runner's default exec.

export function commandEnv(env = process.env) {
  const { NODE_TEST_CONTEXT, ...rest } = env;
  return rest;
}