docs: reconcile canonical memory with merged Go backend

.project-docs/10-decisions/adr-003-next-go-target.md

@@ -2,7 +2,7 @@
 
 ## Status
 
-Accepted target; implementation pending
+Accepted target; Go implementation merged into `main` on 2026-08-14 (see `.project-docs/30-worklog/current-state.md`); deployment and traffic cutover pending
 
 ## Date
 

.project-docs/10-decisions/decision-index.md

@@ -7,7 +7,7 @@
 | RDS-001 | Production persistence uses explicit direct PostgreSQL through one server-only adapter; local JSON is explicit development/test mode. | Accepted | 2026-08-12 | Server stores and scripts | `ZHINIAN_DATA_BACKEND=postgres` fails closed and never silently falls back. |
 | RDS-002 | Database changes use versioned, checksummed, advisory-locked migrations executed by a one-shot deployment Job. | Accepted | 2026-08-12 | Database schema and ACK rollout | Migrations do not run in each Web pod init container. |
 | ACK-001 | Worker remains an HTTP poller and does not receive RDS credentials; Web owns database access. | Accepted | 2026-08-12 | ACK workloads | Worker calls the internal Web Service with a shared internal token. |
-| ADR-003 | Target architecture is a same-origin Next.js frontend plus Go modular-monolith backend with an initially embedded WorkerLoop. | Accepted target; implementation pending | 2026-08-12 | Application and ACK architecture | Current ACK-001 topology remains authoritative until code migration and cutover pass the required compatibility tests. See `adr-003-next-go-target.md`. |
+| ADR-003 | Target architecture is a same-origin Next.js frontend plus Go modular-monolith backend with an initially embedded WorkerLoop. | Accepted target; Go implementation merged into `main` 2026-08-14; deployment/cutover pending | 2026-08-12 | Application and ACK architecture | Current ACK-001 topology remains authoritative until code migration and cutover pass the required compatibility tests. See `adr-003-next-go-target.md`. |
 
 ## Superseded Decisions