malkhut(T6): training core — CMA-ES trainer, registry, pipeline, selector

CMA-ES trainer (cma_trainer.py): self-play pool, bootstrap CI, ScenarioFactory
with behavior-driven scenarios, auto-compile, label query interfaces.
Policy registry (registry.py): CANDIDATE → ACTIVE lifecycle.
Training pipeline (pipeline.py): bounded continuous learning loop + logger.
Strategy selector (selector.py): regime → strategy mapping, performance matrix.

MALKHUT/malkhut/training/__init__.py

@@ -0,0 +1 @@
+from malkhut.training.cma_trainer import CMAESTrainer, CMAParameterCodec