diff --git a/.custodian-brief.md b/.custodian-brief.md
index f94f95d..348373a 100644
--- a/.custodian-brief.md
+++ b/.custodian-brief.md
@@ -2,13 +2,17 @@
 # Custodian Brief — rein-aharness
 
 **Domain:** agents  
-**Last synced:** 2026-08-08 19:34 UTC  
+**Last synced:** 2026-08-22 21:55 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)