Problem: relationship create/end existed as three drifted copies
(HTTP CreateRelationship/EndRelationship, MCP create_relationship/
end_relationship) with inline SQL, no ontology edge validation on
either path, and no audit on the MCP path.
Change:
- Internal/adapters/postgres/repositories.go: RelRepo implements
ports.RelationshipRepository (Create/End/ListFor) over the pool,
with in-tx upsert + audit/event side effects on Create.
- Internal/core/app/relationships.go: RelationshipService validates
edges against the cached ontology TypeTree (tree.ValidateEdge) and
delegates the tx to the repository. The adapter resolves slug→entity
and extracts types before calling the service.
- HTTP CreateRelationship: resolves source/target via ReadModels,
passes resolved types to RelationshipService for edge validation.
EndRelationship calls the service directly (audit stays in the
adapter for End — a simple toggle with no ontology check).
- MCP create_relationship/end_relationship: rewired to the service
(pool resolves entity IDs inline for the tool handlers; the service
validates edges and writes audit). The MCP path now gets ontology
validation and audit coverage for the first time.
- Composition root: RelationshipService built with RelRepo + Ontology
and wired through httpapi.NewHandler, ListenAndServe, and MCP
constructors.
Verification: go build/vet, full test suite (19 pkgs, DB integration
postgres+mcp green).
