diff --git a/WORK-RECORDS.md b/WORK-RECORDS.md
index 42de6c0..0c083c8 100644
--- a/WORK-RECORDS.md
+++ b/WORK-RECORDS.md
@@ -278,7 +278,7 @@
 | task | STATE-WP-0079-T01 | done | — | workplans/STATE-WP-0079-retirement-strangler.md |
 | task | STATE-WP-0079-T02 | done | — | workplans/STATE-WP-0079-retirement-strangler.md |
 | task | STATE-WP-0079-T03 | done | — | workplans/STATE-WP-0079-retirement-strangler.md |
-| task | STATE-WP-0079-T04 | todo | — | workplans/STATE-WP-0079-retirement-strangler.md |
+| task | STATE-WP-0079-T04 | progress | — | workplans/STATE-WP-0079-retirement-strangler.md |
 | task | STATE-WP-0079-T05 | todo | — | workplans/STATE-WP-0079-retirement-strangler.md |
 | task | STATE-WP-0079-T06 | todo | — | workplans/STATE-WP-0079-retirement-strangler.md |
 | task | STATE-WP-0080-T01 | done | — | workplans/STATE-WP-0080-register-project-flavor-awareness.md |
diff --git a/workplans/STATE-WP-0079-retirement-strangler.md b/workplans/STATE-WP-0079-retirement-strangler.md
index 610caa2..1cecf62 100644
--- a/workplans/STATE-WP-0079-retirement-strangler.md
+++ b/workplans/STATE-WP-0079-retirement-strangler.md
@@ -116,7 +116,7 @@ registration suite passes (`20 passed`).
 
 ```task
 id: STATE-WP-0079-T04
-status: todo
+status: progress
 priority: high
 state_hub_task_id: "db5291f2-3801-40fa-abf2-ceb0e77687c9"
 ```
@@ -160,6 +160,22 @@ it changes how live task writes flow.
 Net: of 425 inventory items, roughly **6 can move today**. The retirement is
 gated almost entirely on owner-side capability in `repo-manager` and `hub-core`.
 
+**Readiness update (2026-08-21):** RMGR-WP-0008 is finished, HUB-WP-0004 is
+finished, and the cutover slice plan now records the corrected receiving/UI
+boundaries. Workplan/register/classification adapters and compatibility tests
+exist; execute them by slice rather than relying on this earlier readiness
+snapshot.
+
+**Deterministic-identifier compatibility sub-slice (2026-08-21):** fleet owner
+declared namespace `helixforge`. Repo Manager's sealed plan covers 242 live
+records across 42/42 eligible repositories with zero collisions, but apply is
+not yet authorized. State Hub uses workplan/task UUIDs as primary keys referenced
+by progress, decisions, dependencies, token events, launches, and other tables;
+those foreign keys do not use `ON UPDATE CASCADE`. This task owns the temporary
+transactional projection migration, durable old-id aliases, rollback rehearsal,
+and compatibility evidence needed by RMGR-WP-0005-T04. Do not rewrite repository
+UUID fields until that sub-slice passes in isolated PostgreSQL.
+
 **A2a executed (2026-08-20) — first live cutover slice.** Dual-run is on for the
 pilot repo: