The harness declared peer deps on the pre-rename @mariozechner/pi-ai and
@mariozechner/pi-agent-core names, so npm auto-installed our own code from the
registry under an alias. sync-versions bumped those aliases in lockstep, which
made every release fail because the new version is not published yet.
Build the eval harness on createHarness from vitest-evals core instead. The
pi-specific code was already ours; the harness only contributed agent-lifecycle
plumbing and unused tool replay.
