diff --git a/.custodian-brief.md b/.custodian-brief.md
index d366c4d..a386d1f 100644
--- a/.custodian-brief.md
+++ b/.custodian-brief.md
@@ -2,7 +2,7 @@
 # Custodian Brief — hub-core
 
 **Domain:** infotech  
-**Last synced:** 2026-09-28 21:50 UTC  
+**Last synced:** 2026-10-03 01:29 UTC  
 **State Hub:** http://127.0.0.1:8000 *(adjust if running on a remote machine)*
 
 ## Active Workstreams
@@ -42,6 +42,11 @@ Progress: 0/8 done  |  workplan_id: `e61ce290-c5ec-516c-8589-ef9a55cf3aa3`
   *(wait: M1 acceptance; owner: rapp-core-hub via RAPPCOREHUB-WP-0002-T05)*
 - … and 1 more open tasks
 
+## Inbox Hygiene
+
+**Stale unread:** 1 message(s) older than 3 day(s) — triage at session start.
+**Missing thread_id:** 1 unread message(s) lack supersession chains.
+
 ---
 ## MCP Orientation (when available)