diff --git a/.custodian-brief.md b/.custodian-brief.md
index f4cd6d3..1ff6067 100644
--- a/.custodian-brief.md
+++ b/.custodian-brief.md
@@ -2,7 +2,7 @@
 # Custodian Brief — key-cape
 
 **Domain:** infotech  
-**Last synced:** 2026-09-13 22:11 UTC  
+**Last synced:** 2026-09-23 20:01 UTC  
 **State Hub:** http://127.0.0.1:8000 *(adjust if running on a remote machine)*
 
 ## Active Workstreams
@@ -22,6 +22,11 @@ Progress: 1/2 done  |  workplan_id: `144dd430-1a09-51e1-9aad-e799ee86c338`
 ### Approval-engine resource audience and client registrations
 Progress: 7/7 done  |  workplan_id: `6e815d88-b0e3-5ce0-be5d-13ab15917f7f`
 
+## Inbox Hygiene
+
+**Stale unread:** 3 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)