- Role models: run_improvement_via_tasks gains role_models
(probe/editor/selector/reflector) plus --model-<role> CLI flags;
missing/empty falls back to shared --model, both empty means
server default, so default behavior is unchanged.
- Sweep: run_sweep + examples/harness2_sweep.py manifest CLI with
shared library_root (library restore), per-run failure isolation
and sweep-report.json summary; preflight gates task creation.
- Deliverable assets: GET /tasks/{id}/files for local-executor
tasks (safe path resolution, UTF-8 text <=256KB, listing <=200;
docker/cloud/cross-host 409 with explicit reason, since tenant
Docker shares one /app/work per project and per-task attribution
would misattribute); probe rollout deliverable_files from the
endpoint plus DELIVERABLE FILE reply blocks (endpoint wins on
collision, bad blocks dropped), surfaced in
deliverables/<label>/files/ context and full_result summary.
- Docs: harness2.md comparison table updated for all three items.
