diff --git a/.custodian-brief.md b/.custodian-brief.md
index 14265b5..872f813 100644
--- a/.custodian-brief.md
+++ b/.custodian-brief.md
@@ -2,12 +2,23 @@
 # Custodian Brief — kontextual-engine
 
 **Domain:** markitect  
-**Last synced:** 2026-05-07 01:45 UTC  
+**Last synced:** 2026-05-08 07:12 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)*
+### CMIS Browser Binding TCK Compatibility
+Progress: 0/10 done  |  workstream_id: `18710625-e573-45b1-9b0a-a8b43caaada1`
+
+**Open tasks:**
+- · F13.1 - Define Browser Binding protocol contract examples  `fa2f99fb`
+- · F13.2 - Implement CMIS Browser Binding serializers  `39949f5b`
+- · F13.3 - Align target repository identity and access-point profile  `96e11fe6`
+- · F13.4 - Add protocol-shape preflight gates  `06506455`
+- · F13.5 - Fix OpenAPI generation for streaming routes  `de73a3ff`
+- · F13.6 - Resolve navigation contract and root children behavior  `1cf8d36c`
+- · F13.7 - Establish OpenCMIS session smoke test  `38777aea`
+- … and 3 more open tasks
 
 ---
 ## MCP Orientation (when available)