Module features 

Feature Activation Tracking

Tracks when protocol features activate by block height or timestamp. This allows the protocol engine to determine if features are active at a specific block height, not just whether they’re supported.

Structs

FeatureActivation

Feature activation information

FeatureContext

Feature context consolidating all Bitcoin feature flags at a specific height/timestamp This provides a single source of truth for feature activation state

FeatureRegistry

Feature activation registry for a protocol version

Enums

ActivationMethod

Feature activation method