diff --git a/.custodian-brief.md b/.custodian-brief.md
index 5fac11a..9aa040b 100644
--- a/.custodian-brief.md
+++ b/.custodian-brief.md
@@ -2,12 +2,19 @@
 # Custodian Brief — clay-borg
 
 **Domain:** consumer  
-**Last synced:** 2026-08-07 07:56 UTC  
+**Last synced:** 2026-08-07 09:27 UTC  
 **State Hub:** http://127.0.0.1:8000 *(adjust if running on a remote machine)*
 
 ## Active Workstreams
 
-*(none — repo may need first-session setup)*
+### A number that does not move: a control for the wrong-subject family
+Progress: 0/4 done  |  workplan_id: `e6a0dad9-9b45-41fb-92ab-07c8b5690366`
+
+**Open tasks:**
+- · Task: decide the rule and its limits  `4be3630e`
+- · Task: the rule, in the spec that governs findings  `cefcc917`
+- · Task: make the mechanical half mechanical  `b773bc85`
+- · Task: evidence  `7206661a`
 
 ---
 ## MCP Orientation (when available)