diff --git a/.custodian-brief.md b/.custodian-brief.md
index 84afc64..1e22473 100644
--- a/.custodian-brief.md
+++ b/.custodian-brief.md
@@ -2,17 +2,16 @@
 # Custodian Brief — tenant-engine
 
 **Domain:** infotech  
-**Last synced:** 2026-08-17 19:41 UTC  
+**Last synced:** 2026-08-17 20:06 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: 0/5 done  |  workplan_id: `956d202f-e69d-4786-9525-6acf6e93116c`
+Progress: 1/5 done  |  workplan_id: `956d202f-e69d-4786-9525-6acf6e93116c`
 
 **Open tasks:**
 - · T01 - Propose the ADR-0013 amendment to NetKingdom canon  `374626c0`
-- · T02 - Find out who parses the grouping segment  `d98353d6`
 - · T03 - Implement the audited grouping mutation  `b6c0c54f`
 - · T04 - Interactions with guardrails and grants  `807c34ab`
 - · T05 - Ship, and tell the consumers  `072cddc6`