Module node 

Merkle node definition and builder.

Each node in the Merkle-DAG contains:

• A content identifier (CID) computed from its contents
• References to parent nodes (causal predecessors)
• A payload (delta-group or snapshot)
• A logical timestamp

Structs

MerkleNode

A node in the Merkle-DAG representing a causal event.

NodeBuilder

Builder for creating Merkle nodes.

Enums

Payload

The payload carried by a Merkle node.