feat(preprocess): resume evidence jobs by run id

harness/tht/jobs/runner.py

@@ -7,6 +7,7 @@ import hashlib
 import os
 import uuid
 import stat
+import shutil
 from collections.abc import Callable, Sequence
 from dataclasses import dataclass
 from pathlib import Path
@@ -155,6 +156,9 @@ def run_job(spec: JobSpec, stages: Sequence[Stage]) -> JobReport:
             run = _new_run(spec, run_id, stages)
         else:
             run = _resume_run(spec, run_id, stages, source)
+            source_artifacts = jobs_root / source.run_id / "artifacts"
+            if source_artifacts.exists():
+                shutil.copytree(source_artifacts, run_dir / "artifacts")
         _persist(checkpoint_path, run)
         context = JobContext(run_id, spec.job_type, spec.dry_run, spec.workspace_root, run_dir)