diff --git a/.custodian-brief.md b/.custodian-brief.md
index 2dfb61a..da018a7 100644
--- a/.custodian-brief.md
+++ b/.custodian-brief.md
@@ -2,16 +2,15 @@
 # Custodian Brief — prj-state-hub-retirement
 
 **Domain:** infotech  
-**Last synced:** 2026-08-09 15:45 UTC  
+**Last synced:** 2026-08-09 16:00 UTC  
 **State Hub:** http://127.0.0.1:8000 *(adjust if running on a remote machine)*
 
 ## Active Workstreams
 
 ### Project foundation and architecture baseline
-Progress: 3/6 done  |  workplan_id: `8498db77-cbe1-48ff-b7f0-03b933f0aa8a`
+Progress: 4/6 done  |  workplan_id: `8498db77-cbe1-48ff-b7f0-03b933f0aa8a`
 
 **Open tasks:**
-- · Define the hub and extension architecture  `90e8350a`
 - · Establish the child-workplan map  `1fc9da32`
 - · Baseline migration and retirement acceptance  `d793f242`