v1.15.0 -- Identity Graph

Identity Graph (v2.0 headline feature)

A durable, queryable graph layer above run-local clusters. Stable entity_id (UUIDv7) per identity, source-record nodes, evidence edges, append-only event log, aliases.

SQLite default, Postgres optional. Resolve runs after dedupe clustering; idempotent on (run_name, kind, entity_id). Additive feature -- failure logs + skips, never blocks dedupe output.

Surfaces shipping in v1.15.0

• Python: goldenmatch.identity.* + root re-exports
• CLI: goldenmatch identity {list,show,resolve,history,conflicts,merge,split}
• REST: /api/v1/identities/...
• Web: new "Identities" tab
• MCP: 6 identity_* tools
• A2A: 6 skills (agent card: 12 -> 18)
• Postgres: goldenmatch/db/migrations/identity_v1.sql + 3 analytical views
• DuckDB / Postgres extensions: 5 read-only UDFs/functions in packages/rust/extensions/
• TS edge-safe core: InMemoryIdentityStore + query helpers (ships as goldenmatch@0.8.0 on npm)

Tests

• 47 new Python tests + 13 new TS tests + 9 new extensions tests
• Full Python sweep: 1984 passed, 60 skipped, 0 regressions
• CI green on all lanes incl. duckdb_extensions and rust_pgrx PG 15/16/17

Documentation

• Design: docs/superpowers/specs/2026-05-12-identity-graph-design.md
• DuckDB / extensions contract: docs/superpowers/specs/2026-05-12-identity-graph-duckdb-contract.md

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