feat: add entity layer for cross-agent discovery (spec 13)#39
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Entities are hub nodes (kind: "entity") that unify knowledge about the same real-world thing across multiple agents. When "Company X pivoting to AI" (strategy agent) and "Evaluated Company X SDK" (engineering agent) both tag entity-company-x, the auto-linker detects the co-occurrence and eventually promotes it to a first-class entity node with references edges. - Add authored_by, references, shared_entity relations - Entity extraction from node metadata (entities array) and tags (entity- prefix) - Auto-linker: entity co-occurrence rule creates shared_entity edges across agents - Auto-linker: periodic entity promotion creates entity hub nodes (configurable) - Briefing engine: find_agent_node supports both kind:agent and kind:entity - Agent-to-entity migration helper - 34 new tests (22 unit + 3 storage integration + 9 edge cases) Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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Summary
entitiesarray) and tags (entity-prefix)shared_entityedges when nodes from different agents reference the same entitykind: "entity"hub nodes withreferencesedges when 2+ agents mention the same entityfind_agent_node()now finds both oldkind: "agent"and newkind: "entity"nodesauthored_by,references,shared_entityadded to defaultsentity_promote_every_n_cycles(default 60) andentity_promote_min_agents(default 2)Test plan
cargo clippy -p cortex-corecleancargo build -p cortex-memory(server) compiles🤖 Generated with Claude Code