API - CODEX AGENTS: persistence and lifecycle endpoints

docs/IMPLEMENTATION_PLAN.md

@@ -4,7 +4,7 @@ Last updated: 2026-05-14.
 
 ## Phase 0. Architecture baseline
 
-Status: current phase.
+Status: done in `97d98a7`.
 
 Deliverables:
 
@@ -23,6 +23,8 @@ Exit criteria:
 
 ## Phase 1. Agent Gateway skeleton
 
+Status: in progress. Initial service, migrations, persistence endpoints, token hashing, local Postgres compose, and smoke checks are implemented.
+
 Create standalone service with:
 
 - Dockerfile;