diff --git a/.custodian-brief.md b/.custodian-brief.md
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+++ b/.custodian-brief.md
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 # Custodian Brief — shard-wiki
 
 **Domain:** whynot  
-**Last synced:** 2026-06-15 22:36 UTC  
+**Last synced:** 2026-06-15 22:57 UTC  
 **State Hub:** http://127.0.0.1:8000 *(adjust if running on a remote machine)*
 
 ## Active Workstreams
 
-### wiki-engine implementation — kernel + typed-extension runtime + activation
-Progress: 5/6 done  |  workstream_id: `bfce1644-d93d-44c7-af2c-6b0cb50cedd4`
-
-**Open tasks:**
-- · First built-in extension (prove the framework end-to-end)  `b88d1640`
-
 ### second adapter — git-IS-store shard (contract validation on a new substrate)
 Progress: 0/3 done  |  workstream_id: `9e24eeb0-c0f0-41e6-a1ca-88d71e4139ea`