diff --git a/.custodian-brief.md b/.custodian-brief.md
index c11ee23..e437b07 100644
--- a/.custodian-brief.md
+++ b/.custodian-brief.md
@@ -2,7 +2,7 @@
 # Custodian Brief — tenant-engine
 
 **Domain:** infotech  
-**Last synced:** 2026-09-22 06:34 UTC  
+**Last synced:** 2026-09-30 16:53 UTC  
 **State Hub:** http://127.0.0.1:8000 *(adjust if running on a remote machine)*
 
 ## Active Workstreams
@@ -14,6 +14,11 @@ Progress: 0/2 done  |  workplan_id: `cb7387d0-431d-56a2-bb7b-86a024aeeefb`
 - ! T01 — audit-core sender registration (AUDIT-IN-0002)  `7898c1aa`
 - ! T02 — boundary-contract amendment (NET-IN-0002)  `f7d27d7c`
 
+## Inbox Hygiene
+
+**Stale unread:** 4 message(s) older than 3 day(s) — triage at session start.
+**Missing thread_id:** 4 unread message(s) lack supersession chains.
+
 ---
 ## MCP Orientation (when available)