diff --git a/.custodian-brief.md b/.custodian-brief.md
index e40d9c2..ea91755 100644
--- a/.custodian-brief.md
+++ b/.custodian-brief.md
@@ -2,13 +2,17 @@
 # Custodian Brief — prj-state-hub-retirement
 
 **Domain:** infotech  
-**Last synced:** 2026-08-09 19:47 UTC  
+**Last synced:** 2026-08-21 14:29 UTC  
 **State Hub:** http://127.0.0.1:8000 *(adjust if running on a remote machine)*
 
 ## Active Workstreams
 
 *(none — repo may need first-session setup)*
 
+## Inbox Hygiene
+
+**Missing thread_id:** 1 unread message(s) lack supersession chains.
+
 ---
 ## MCP Orientation (when available)