diff --git a/.custodian-brief.md b/.custodian-brief.md
index 04f7748..ac0306f 100644
--- a/.custodian-brief.md
+++ b/.custodian-brief.md
@@ -2,12 +2,20 @@
 # Custodian Brief — railiance-fabric
 
 **Domain:** railiance  
-**Last synced:** 2026-05-24 13:50 UTC  
+**Last synced:** 2026-05-24 14:22 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)*
+### Zone Boundary Overlays
+Progress: 0/5 done  |  workstream_id: `e9e2d47f-a965-4e2e-b65d-379dbb206a65`
+
+**Open tasks:**
+- · T01 - Define Zone Grouping And Labels  `91777c22`
+- · T02 - Render Rectangle Boundary Overlays  `98ef5ecc`
+- · T03 - Add Zone Overlay Controls  `30d48d5c`
+- · T04 - Surface Zone Boundary Details  `c002aa54`
+- · T05 - Verify Responsive And Dense Graph Behavior  `03f265ad`
 
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 ## MCP Orientation (when available)