Remove dead code and wire the two-worker smoke script

scimesh/worker/config.py

@@ -2,7 +2,6 @@
 
 from __future__ import annotations
 
-import json
 from dataclasses import dataclass
 from math import isfinite
 from pathlib import Path

scimesh/worker/daemon.py

@@ -5,7 +5,6 @@ from __future__ import annotations
 import logging
 from dataclasses import replace
 from dataclasses import dataclass
-from pathlib import Path
 import random
 import re
 import shutil

scimesh/worker/runners.py

@@ -24,7 +24,6 @@ from uuid import NAMESPACE_URL, uuid5
 
 from scimesh.sdk.artifacts import (
     ArtifactCollection,
-    ArtifactRef,
     OutputManifest,
     Provenance,
 )