diff --git a/.custodian-brief.md b/.custodian-brief.md
index cd267f5..69b7da1 100644
--- a/.custodian-brief.md
+++ b/.custodian-brief.md
@@ -2,7 +2,7 @@
 # Custodian Brief — the-custodian
 
 **Domain:** infotech  
-**Last synced:** 2026-09-14 09:46 UTC  
+**Last synced:** 2026-09-22 09:27 UTC  
 **State Hub:** http://127.0.0.1:8000 *(adjust if running on a remote machine)*
 
 ## Active Workstreams
@@ -23,6 +23,10 @@ Progress: 1/5 done  |  workplan_id: `2249bddb-7524-5add-bd5c-c4163a6ca0f3`
 ### Ad hoc tasks 2026-08-25
 Progress: 1/1 done  |  workplan_id: `1c53d3db-6633-5e2d-987f-10706d73be9e`
 
+## Inbox Hygiene
+
+**Missing thread_id:** 3 unread message(s) lack supersession chains.
+
 ---
 ## MCP Orientation (when available)