Implement boundary engine and close WP-0004

adaptive_pricing_core/__init__.py

@@ -1,3 +1,12 @@
+from .boundary_engine import (
+    BoundaryPolicy,
+    CommitmentTerms,
+    ConstraintResult,
+    PricingConfiguration,
+    ValidationResult,
+    default_commitment_terms,
+    validate_pricing_configuration,
+)
 from .pricing_models import (
     ChargeComponent,
     Commitment,
@@ -10,12 +19,19 @@ from .pricing_models import (
 )
 
 __all__ = [
+    "BoundaryPolicy",
     "ChargeComponent",
     "Commitment",
+    "CommitmentTerms",
+    "ConstraintResult",
     "PricingModel",
     "PricingModelStatus",
+    "PricingConfiguration",
     "TunableParameter",
+    "ValidationResult",
+    "default_commitment_terms",
     "load_pricing_models",
+    "validate_pricing_configuration",
     "validate_pricing_catalog",
     "validate_pricing_model",
 ]