diff --git a/.custodian-brief.md b/.custodian-brief.md
index 4ddb9d7..c8985dd 100644
--- a/.custodian-brief.md
+++ b/.custodian-brief.md
@@ -2,13 +2,12 @@
 # Custodian Brief — activity-core
 
 **Domain:** custodian  
-**Last synced:** 2026-05-14 10:41 UTC  
+**Last synced:** 2026-05-14 10:56 UTC  
 **State Hub:** http://127.0.0.1:8000 *(adjust if running on a remote machine)*
 
 ## Active Workstreams
 
-### activity-core Foundation — Temporal Backbone
-Progress: 21/21 done  |  workstream_id: `e22516cc-4fdf-4dad-a928-a9e04a9fa7c7`
+*(none — repo may need first-session setup)*
 
 ---
 ## MCP Orientation (when available)