#261 iterative_dpo._default_train_fn rendered output as a {dir: ...} mapping
that SoupConfig rejected; render it flat so the spawned soup train succeeds.
#246 CMA-ES merge now loads the base model once and reuses it across the
candidate population (_CachedBaseScorer) instead of reloading per candidate.
#245 soup loop estimate_cost wires run_cost.estimate_run_cost_usd off the last
completed run instead of a 0.0 placeholder; never crashes the daemon.
#244 soup train --track-energy --energy-out persists the measurement JSON so
soup bom emit --energy can attach it to an ML-BOM.
#170 --diagnose-gate is RANK-aware: gate once per cluster (RANK==0), not per node.
Tests: 13476 -> 13511 (+35 in tests/test_v07115.py). Validated end-to-end on
SmolLM2-135M / RTX 3050.