diff --git a/.custodian-brief.md b/.custodian-brief.md
index fab1536..abaf19e 100644
--- a/.custodian-brief.md
+++ b/.custodian-brief.md
@@ -2,11 +2,21 @@
 # Custodian Brief — shard-wiki
 
 **Domain:** whynot  
-**Last synced:** 2026-06-14 23:44 UTC  
+**Last synced:** 2026-06-14 23:57 UTC  
 **State Hub:** http://127.0.0.1:8000 *(adjust if running on a remote machine)*
 
 ## Active Workstreams
 
+### core architecture hardening II (round-2 review fixes)
+Progress: 0/5 done  |  workstream_id: `badb83f8-2806-4018-9d7f-d4666d3510ba`
+
+**Open tasks:**
+- · §A overview-reconciliation pass  `b0b4087b`
+- · Journal & coordination-state model (single vs multi-writer)  `fd17f7b9`
+- · Adapter conformance suite (profiles must be verified, not asserted)  `900c8234`
+- · Incremental-maintenance correctness & I-2 verification  `adf4ed28`
+- · Track second-tier items; close-out  `18cb718a`
+
 ### federation architecture design
 Progress: 0/18 done  |  workstream_id: `2af4c46d-cbfd-40ea-a94b-d9e60b0f9945`