Briefs: no test run of any size on Starfire

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

references/briefs.md

@@ -396,6 +396,9 @@ Commits:
 - Say in the message which commits don't build.
 
 Verification: <exact builds, tests, captures, negative greps>.
+- No test run of any size on Starfire: a "quick" local suite counts. Only
+  Windows-only checks the brief names run there (py-msgpack-default h1 ran two
+  Python suites locally on 2026-10-12, red for Windows-only reasons).
 - Verify through `tools/stopgap/ygg-verify.sh` with `SUMMARY=<log>` (above):
   read the summary, and open the full log only at a named failing test, with
   `grep -n -A 40`. Hand mutants go in one list to `tools/mutation-table.sh`,

references/changelog.md

@@ -2,6 +2,14 @@
 
 Record each change to the skill together with the evidence that motivated it.
 
+## 2026-10-12: no test run of any size on Starfire
+
+Self, session `self-2026-10-12-eureka`.
+
+Evidence. `cultlib-gaps:cut_report:cut-py-msgpack-default.h1`: Hands ran the cultmesh-py and cultnet-py suites on Starfire as well as on Yggdrasil; both were red for Windows-only reasons and cost workstation load. The brief said heavy verification goes to Yggdrasil, and Hands read a test suite as not heavy.
+
+What changed. The Hands brief's verification list says no test run of any size runs on Starfire unless the brief names it as Windows-only.
+
 ## 2026-10-12: map only what is about to run
 
 Self, session `self-2026-10-12-eureka`.