diff --git a/.custodian-brief.md b/.custodian-brief.md
index af3cbe8..b65b6e3 100644
--- a/.custodian-brief.md
+++ b/.custodian-brief.md
@@ -2,16 +2,23 @@
 # Custodian Brief — qonto-assistant
 
 **Domain:** infotech  
-**Last synced:** 2026-09-24 08:08 UTC  
+**Last synced:** 2026-10-03 20:49 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)*
+### Adopt canonical cadence and establish observer delivery requirements
+Progress: 1/3 done  |  workplan_id: `d6ed8fec-06a4-504d-8119-80575d87afbf`
+
+**Open tasks:**
+- ! Establish actual sender and accepted-count mapping  `77af5db4`
+- ! Obtain independent observer acceptance  `9eb725b2`
 
 ## Inbox Hygiene
 
+**Stale unread:** 2 message(s) older than 3 day(s) — triage at session start.
 **Missing thread_id:** 2 unread message(s) lack supersession chains.
+- ! risk-nexus: [FINDING] RISK-F-0012 e-invoice receipt and retention: you are the fix owner, workplan requested  `88507a8a`
 
 ---
 ## MCP Orientation (when available)