diff --git a/.custodian-brief.md b/.custodian-brief.md
index d93368e..86d7ce1 100644
--- a/.custodian-brief.md
+++ b/.custodian-brief.md
@@ -2,16 +2,15 @@
 # Custodian Brief — shard-wiki
 
 **Domain:** whynot  
-**Last synced:** 2026-06-14 21:39 UTC  
+**Last synced:** 2026-06-14 21:46 UTC  
 **State Hub:** http://127.0.0.1:8000 *(adjust if running on a remote machine)*
 
 ## Active Workstreams
 
 ### computational / interactive-knowledge systems research
-Progress: 3/8 done  |  workstream_id: `5fc3911a-1c68-4826-bbd2-b892dec8f981`
+Progress: 4/8 done  |  workstream_id: `5fc3911a-1c68-4826-bbd2-b892dec8f981`
 
 **Open tasks:**
-- · Mathematica Notebooks  `6e46ec45`
 - · Processing.org and Processing.js  `0f54cb0e`
 - · Strudel.cc — live-coding REPL  `2b099639`
 - · Squeak Smalltalk  `50723598`