Sync generated State Hub closeout brief

Assistant: codex
Assistant-Model: gpt-6-astra
Assistant-Session: 01a0e76f-be98-7ae3-965d-e0b31290a4c4

.custodian-brief.md

@@ -2,12 +2,26 @@
 # Custodian Brief — test-driver
 
 **Domain:** infotech  
-**Last synced:** 2026-08-22 22:54 UTC  
+**Last synced:** 2026-09-28 10:05 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)*
+### Generalise the model and settle the open questions
+Progress: 5/8 done  |  workplan_id: `36a082df-1288-567d-9a0b-f2e0f292786c`
+
+**Open tasks:**
+- ! Bounded live-model runtime experiment  `0090ce51`
+  *(wait: Bernd Worsch must select the model, fixed run count, spending ceiling and default-suite policy before any live-model experiment. No paid calls were made.)*
+- ! A browser-engine driver, if it is warranted  `19f8e687`
+  *(wait: Await the existing Playwright setup/licence decision and T01 prerequisite; T02 and T03 are now complete.)*
+- ! Measure the cost of expressing a use case  `62f08e27`
+  *(wait: Initial timer excluded code composition; elapsed authoring cost cannot be reconstructed. Need a prospectively timed fresh implementation by an independent author using the specified contracts, not copying the fixtures.)*
+
+## Inbox Hygiene
+
+**Stale unread:** 1 message(s) older than 3 day(s) — triage at session start.
+**Missing thread_id:** 1 unread message(s) lack supersession chains.
 
 ---
 ## MCP Orientation (when available)