diff --git a/.custodian-brief.md b/.custodian-brief.md
index 5dd0811..ce7080b 100644
--- a/.custodian-brief.md
+++ b/.custodian-brief.md
@@ -2,7 +2,7 @@
 # Custodian Brief — user-engine
 
 **Domain:** communication  
-**Last synced:** 2026-09-13 22:11 UTC  
+**Last synced:** 2026-09-22 09:53 UTC  
 **State Hub:** http://127.0.0.1:8000 *(adjust if running on a remote machine)*
 
 ## Active Workstreams
@@ -15,11 +15,10 @@ Progress: 1/3 done  |  workplan_id: `145df9d5-a7e9-5d20-8280-9d3ea069838b`
 - · Connect authoritative application access  `5d1bf977`
 
 ### Clear account state and complete user, tenant-admin and platform-admin journeys
-Progress: 3/6 done  |  workplan_id: `455300ca-ec1e-569e-a584-a8dcda2595cf`
+Progress: 4/6 done  |  workplan_id: `455300ca-ec1e-569e-a584-a8dcda2595cf`
 
 **Open tasks:**
 - ! Complete provider OTP activation and recovery path  `9657abcb`
-- ► Close tenant and platform administrator usability gaps  `92906113`
 - ► Validate all journeys across roles and applications  `550886ca`
 
 ### Account recovery and visible identity and access
@@ -35,6 +34,12 @@ Progress: 2/3 done  |  workplan_id: `85391398-f5be-551b-b90d-c8e987a00098`
 **Open tasks:**
 - ► Coordinate provider-wide sign-out and account switching  `f5ee70b9`
 
+## Inbox Hygiene
+
+**Stale unread:** 1 message(s) older than 3 day(s) — triage at session start.
+**Missing thread_id:** 1 unread message(s) lack supersession chains.
+- ! flex-auth: FLEX-WP-0020 handoff request (documentation)  `94fd6ef0`
+
 ---
 ## MCP Orientation (when available)