diff --git a/.custodian-brief.md b/.custodian-brief.md
index f806ee7..c610a49 100644
--- a/.custodian-brief.md
+++ b/.custodian-brief.md
@@ -2,20 +2,18 @@
 # Custodian Brief — infospace-bench
 
 **Domain:** markitect  
-**Last synced:** 2026-05-17 04:16 UTC  
+**Last synced:** 2026-05-17 09:36 UTC  
 **State Hub:** http://127.0.0.1:8000 *(adjust if running on a remote machine)*
 
 ## Active Workstreams
 
 ### Infospace Archive Integration With artifact-store
-Progress: 0/5 done  |  workstream_id: `c2d23ee7-6b2b-4db0-b660-a9e295c94956`
+Progress: 2/5 done  |  workstream_id: `c2d23ee7-6b2b-4db0-b660-a9e295c94956`
 
 **Open tasks:**
-- ► Backend contract and URI model  `75b7df31`
 - · S3 object-store backend adapter  `e2ee9497`
 - · Git repository backend adapter  `e2938c5b`
 - · Backend CLI docs and migration path  `20d75d49`
-- · Local and remote folder backend baseline  `2e33d98a`
 
 ### Lefevre EPUB3 Infospace Readiness Pilot
 Progress: 0/7 done  |  workstream_id: `23be7d20-b01f-4b17-9851-4d540e4c0984`