The unified-graph Brain substrate for CLEO — a substrate-agnostic projection across all five CLEO databases: BRAIN, NEXUS, TASKS, CONDUIT, and SIGNALDOCK.

Purpose

@cleocode/brain promotes the unified-graph substrate from a studio-internal module to a first-class workspace package, mirroring @cleocode/nexus. Operator mandate per T962 reconciliation: BRAIN is the super-domain (wraps memory + nexus + tasks + conduit + signaldock), deserves CLI access, and needs a package standalone publish lane.

Substrates

Every node carries a substrate-prefixed ID so cross-substrate edges can reference nodes unambiguously, e.g. brain:O-abc vs nexus:sym-123.

Substrate	Database	Node kinds
`brain`	brain.db (project)	observation, decision, pattern, learning
`nexus`	nexus.db (global)	symbol, file
`tasks`	tasks.db (project)	task, session
`conduit`	conduit.db (project)	message
`signaldock`	signaldock.db (global)	agent

Usage

import { getAllSubstrates, type BrainGraph } from '@cleocode/brain';

const graph: BrainGraph = getAllSubstrates({ limit: 500, minWeight: 0 });
console.log(`${graph.nodes.length} nodes across ${Object.keys(graph.counts.nodes).length} substrates`);

Individual substrate adapters are exported from @cleocode/brain/adapters:

import {
  getBrainSubstrate,
  getConduitSubstrate,
  getNexusSubstrate,
  getSignaldockSubstrate,
  getTasksSubstrate,
} from '@cleocode/brain/adapters';

Wire Format

The wire format (types BrainNode, BrainEdge, BrainGraph, BrainQueryOptions, BrainStreamEvent) is re-exported from the top-level entry point. See src/types.ts for the canonical definitions.

A parallel contracts mirror lives at @cleocode/contracts/operations/brain (T968) for programmatic-API consumers. It describes the HTTP wire format for the brain.* operations and is intentionally structurally distinct from these runtime types (e.g. contract BrainNode uses type: string + data, runtime uses kind: BrainNodeKind + meta + an optional adapter-produced weight).

Naming

All exported types carry the Brain* prefix (BrainNode, BrainEdge, BrainGraph, BrainSubstrate, BrainQueryOptions, BrainStreamEvent, BrainConnectionStatus, BrainNodeKind). T973 completed the LB* → Brain* rename started by the T969 package extraction. The LB* prefix is no longer exported by this package.