diff --git a/.custodian-brief.md b/.custodian-brief.md
index d7ca2c1..7840634 100644
--- a/.custodian-brief.md
+++ b/.custodian-brief.md
@@ -2,18 +2,11 @@
 # Custodian Brief — tenant-engine
 
 **Domain:** infotech  
-**Last synced:** 2026-08-17 20:09 UTC  
+**Last synced:** 2026-08-17 20:53 UTC  
 **State Hub:** http://127.0.0.1:8000 *(adjust if running on a remote machine)*
 
 ## Active Workstreams
 
-### Make tenant grouping mutable and the identifier segment historical
-Progress: 3/5 done  |  workplan_id: `956d202f-e69d-4786-9525-6acf6e93116c`
-
-**Open tasks:**
-- · T01 - Propose the ADR-0013 amendment to NetKingdom canon  `374626c0`
-- · T05 - Ship, and tell the consumers  `072cddc6`
-
 ### Bring tenant-engine under the staged-promotion contract
 Progress: 0/4 done  |  workplan_id: `e9da1c15-7beb-48d9-97ab-b657fdf9366e`