Module types 

Object type, actor, artifact, and header primitives.

This module centralizes the low-level metadata shared across the object layer:

• ObjectType defines every persisted object family and the conversions needed by pack encoding, loose-object style headers, JSON payloads, and internal numeric ids.
• ActorKind and ActorRef identify who created an object.
• ArtifactRef links an object to content stored outside the Git object database.
• Header is the immutable metadata envelope embedded into AI objects such as Intent, Plan, or Run.

One important distinction in this module is that object types live in multiple identifier spaces:

• Git pack header type bits support only core Git types and delta entries.
• String/byte names are used for textual encodings and AI object persistence.
• to_u8 / from_u8 provide a crate-local stable numeric mapping that covers every variant.

Structs

ActorRef

Reference to the actor that created or owns an object.

ArtifactRef

Reference to an artifact stored outside the object database.

Header

Shared immutable metadata header embedded into AI objects.

Enums

ActorKind

High-level category of the actor that created an object.

ArchivedObjectType

An archived ObjectType

ObjectType

Canonical object kind shared across Git-native and AI-native objects.

ObjectTypeResolver

The resolver for an archived ObjectType