diff --git a/.custodian-brief.md b/.custodian-brief.md
index 83434d0..0588dd4 100644
--- a/.custodian-brief.md
+++ b/.custodian-brief.md
@@ -2,17 +2,16 @@
 # Custodian Brief — open-cmis-tck
 
 **Domain:** markitect  
-**Last synced:** 2026-05-07 09:13 UTC  
+**Last synced:** 2026-05-07 10:14 UTC  
 **State Hub:** http://127.0.0.1:8000 *(adjust if running on a remote machine)*
 
 ## Active Workstreams
 
 ### Guide Board Bootstrapping
-Progress: 6/11 done  |  workstream_id: `1d812b7d-74f0-4d71-86a7-0f390b22daf7`
+Progress: 7/11 done  |  workstream_id: `1d812b7d-74f0-4d71-86a7-0f390b22daf7`
 
 **Open tasks:**
-- · D1.6 - Extension SDK Skeleton  `3c757929`
-- · D1.7 - CMIS Seed Extension Integration  `455f92b0`
+- ► D1.7 - CMIS Seed Extension Integration  `455f92b0`
 - · D1.8 - Containerized Execution Design  `21e5c1e0`
 - · D1.9 - Optional Local Service API  `58bd6ec6`
 - · D1.10 - Compliance Evidence Pack Strategy  `2f845860`