Module models 

Structs

AgentRegistration

Approval

A single approval vote recorded on a consensus-gated pending action (Task 1.10).

CreateMemory

DuplicateCheck

Result envelope returned by db::check_duplicate.

DuplicateMatch

One nearest-neighbor result from a memory_check_duplicate lookup (Pillar 2 / Stream D). similarity is the cosine similarity in [-1.0, 1.0], rounded to three decimals at the response layer.

EntityRecord

Resolved entity record returned by db::entity_get_by_alias and embedded in the db::entity_register response (Pillar 2 / Stream B). aliases is the full alias set for the entity, ordered by created_at ASC, alias ASC for stable display.

EntityRegistration

Outcome of db::entity_register. created is true when a new entity memory was inserted, false when an existing entity was reused (idempotent re-registration that just merged new aliases into the existing record).

ForgetQuery

GovernancePolicy

Governance policy attached to a namespace’s standard memory (stored in metadata.governance).

KgQueryNode

One node returned by db::kg_query (Pillar 2 / Stream C — memory_kg_query). Each node represents a memory reachable from the query’s source through one outbound link, carrying the link’s temporal-validity columns plus the target memory’s display fields and the traversal path. depth is the actual number of hops from the source (1..=KG_QUERY_MAX_SUPPORTED_DEPTH); path is the src->mid->target chain as discovered by the recursive CTE.

KgTimelineEvent

Single row returned by db::kg_timeline (Pillar 2 / Stream C).

LinkBody

ListQuery

Memory

MemoryLink

NamespaceCount

NamespaceMetaEntry

v0.6.2 (S35): a namespace-standard metadata row the originating node wants propagated to peers. set_namespace_standard writes to namespace_meta locally; without federation, a peer sees the standard memory (fanned out via broadcast_store_quorum) but not the (namespace, standard_id, parent_namespace) tuple, so inheritance-chain walks on the peer fall back to auto_detect_parent and can miss an explicit parent link.

PendingAction

Row returned by db::list_pending_actions.

PendingDecision

v0.6.2 (S34): a pending-action decision (approve / reject) the originating node wants propagated to peers so callers on any peer see consistent state (approve/reject on node-2 → decision must reach node-1 etc.).

RecallBody

RecallQuery

RegisterAgentBody

SearchQuery

Stats

SyncStateEntry

Phase 3 foundation: one row of the sync_state table serialised for diagnostic / API responses.

Taxonomy

Result envelope returned by db::get_taxonomy.

TaxonomyNode

One node of the hierarchical namespace tree returned by memory_get_taxonomy (Pillar 1 / Stream A).

TierCount

UpdateMemory

VectorClock

Phase 3 foundation (issue #224): vector clock tracking the latest updated_at this peer has seen from each known remote peer.

Enums

ApproverType

Who approves actions gated by GovernanceLevel::Approve.

GovernanceDecision

The outcome of a governance check. Callers MAY execute on Allow, MUST reject on Deny, and SHOULD queue + return the pending_id on Pending.

GovernanceLevel

Who is permitted to perform a governed action.

GovernedAction

Actions that governance gates. Used as the action_type column value in pending_actions and as the discriminator for enforcement calls.

Tier

Memory tier — mirrors human memory systems.

Constants

AGENTS_NAMESPACE

Namespace reserved for agent registrations (Task 1.3).

ENTITY_KIND

Marker written to metadata.kind on entity-typed memories. The db layer keys entity lookups off this field so the alias resolver never returns a regular memory that happens to share a title with an entity registered later.

ENTITY_TAG

Tag stamped on entity-typed memories so (title, namespace) can be shared across regular memories and entities without ambiguity (Pillar 2 / Stream B).

MAX_CONTENT_SIZE

MAX_NAMESPACE_DEPTH

Maximum number of path segments in a hierarchical namespace (Task 1.4). alphaone/engineering/platform/team/squad/pod/role/agent = 8 levels.

MID_TTL_EXTEND_SECS

PROMOTION_THRESHOLD

SHORT_TTL_EXTEND_SECS

How much to extend TTL on access (1 hour for short, 1 day for mid)

VALID_AGENT_TYPES

Closed set of agent types. Extend carefully — values are persisted.

VALID_SCOPES

Closed set of visibility scopes stamped into metadata.scope (Task 1.5). Controls which agents can see a memory via hierarchical namespace matching. Memories without a scope field are treated as private by the query layer.

Functions

default_metadata

namespace_ancestors

Ancestors of a namespace, ordered most-specific-first (including the namespace itself as the first element).

namespace_depth

Number of /-delimited segments in a namespace path.

namespace_parent

Parent of a hierarchical namespace, or None for flat / empty inputs.