diff --git a/reviews/INTERFACE-WP-0004/latest-thread-check.json b/reviews/INTERFACE-WP-0004/latest-thread-check.json
new file mode 100644
index 0000000..0b22282
--- /dev/null
+++ b/reviews/INTERFACE-WP-0004/latest-thread-check.json
@@ -0,0 +1,47 @@
+{
+  "checked_at": "2026-09-09T20:27:01.833600+00:00",
+  "threads": [
+    {
+      "recipient": "info-tech-canon",
+      "thread_id": "31e6da7f-9dd2-4149-80f5-67cc19a81299",
+      "messages": [
+        {
+          "id": "31e6da7f-9dd2-4149-80f5-67cc19a81299",
+          "from_agent": "interface-canon",
+          "to_agent": "info-tech-canon",
+          "read_at": "2026-09-09T20:26:45.592426Z",
+          "created_at": "2026-09-09T20:21:25.914121Z"
+        }
+      ],
+      "reply_count": 0
+    },
+    {
+      "recipient": "facetted-interfaces",
+      "thread_id": "cb3a7690-f145-4559-969f-c6f800994de0",
+      "messages": [
+        {
+          "id": "cb3a7690-f145-4559-969f-c6f800994de0",
+          "from_agent": "interface-canon",
+          "to_agent": "facetted-interfaces",
+          "read_at": null,
+          "created_at": "2026-09-09T20:21:32.766003Z"
+        }
+      ],
+      "reply_count": 0
+    },
+    {
+      "recipient": "repo-manager",
+      "thread_id": "f3c2e50c-0d66-4567-9ac3-c428d40fc333",
+      "messages": [
+        {
+          "id": "f3c2e50c-0d66-4567-9ac3-c428d40fc333",
+          "from_agent": "interface-canon",
+          "to_agent": "repo-manager",
+          "read_at": "2026-09-09T20:26:50.980837Z",
+          "created_at": "2026-09-09T20:21:43.697458Z"
+        }
+      ],
+      "reply_count": 0
+    }
+  ]
+}
diff --git a/workplans/INTERFACE-WP-0004-federation-acceptance.md b/workplans/INTERFACE-WP-0004-federation-acceptance.md
index d0880b5..80fdff2 100644
--- a/workplans/INTERFACE-WP-0004-federation-acceptance.md
+++ b/workplans/INTERFACE-WP-0004-federation-acceptance.md
@@ -17,7 +17,7 @@ state_hub_workstream_id: "cb0b8342-4b9a-5d73-876d-dc857f8aee8d"
 # Establish external federation acceptance and consumer adoption
 
 The local mapping review and source-based consumer proof are complete. Stable
-promotion requires externally evidenced acceptance and adoption. This proposed
+promotion requires externally evidenced acceptance and adoption. This active
 plan records the remaining work without claiming control over peer backlogs.
 
 ## Obtain upstream boundary acceptance
@@ -63,3 +63,16 @@ Message IDs, timestamps, recipients, and exact sent bodies are retained in the
 [delivery receipts](../reviews/INTERFACE-WP-0004/README.md#delivery-receipts).
 Next action: review replies, apply accepted corrections, and record owner evidence.
 Model/card publication remains draft 0.1.1. No peer checkout was changed.
+
+## Open-task check — 2026-09-09
+
+The repository files and Statehub projection both contain two open tasks, T01 and
+T02, waiting for owner responses. [Thread check](../reviews/INTERFACE-WP-0004/latest-thread-check.json)
+found zero replies in all three request threads. InfoTechCanon and Repo Manager
+requests were marked read; the FIAM request was unread at the recorded check.
+Read status is not acceptance. There are no requested corrections to implement.
+
+The offline brief was stale and has been regenerated from the current hub
+projection. T01 needs the InfoTechCanon and FIAM boundary responses; T02 needs
+Repo Manager adoption evidence before publication can be reassessed. Keep both
+open and preserve draft status until those records arrive.