diff --git a/.custodian-brief.md b/.custodian-brief.md
index a04a79a..40cc410 100644
--- a/.custodian-brief.md
+++ b/.custodian-brief.md
@@ -2,7 +2,7 @@
 # Custodian Brief — user-engine
 
 **Domain:** communication  
-**Last synced:** 2026-09-28 21:47 UTC  
+**Last synced:** 2026-09-28 22:25 UTC  
 **State Hub:** http://127.0.0.1:8000 *(adjust if running on a remote machine)*
 
 ## Active Workstreams
@@ -55,6 +55,10 @@ Progress: 1/2 done  |  workplan_id: `0b948be1-ad75-5548-b4eb-aabc8e3ae6cc`
 - ! Re-point the absolute source path after the rename lands  `e945b036`
   *(wait: FLEX-WP-0020 §8: the canonical access-engine clone must be registered before the blueprint pointer changes.)*
 
+## Inbox Hygiene
+
+**Missing thread_id:** 1 unread message(s) lack supersession chains.
+
 ---
 ## MCP Orientation (when available)