diff --git a/agents/gizmoduck/work/queue-234/BUILD.md b/agents/gizmoduck/work/queue-234/BUILD.md
index 7046eca03..8bd8797ea 100644
--- a/agents/gizmoduck/work/queue-234/BUILD.md
+++ b/agents/gizmoduck/work/queue-234/BUILD.md
@@ -243,13 +243,33 @@ Other `src` files:
 - **Run sheet (N5).** The writer refuses `config-privileged` when the file is missing, so each host needs an
   empty, root-owned `/etc/mosaic-keys/privileged` (0644) before the first enrollment.
 
-## Status after duckworth-0081
+## Mutant results (Sage's slot, 2026-10-21)
 
-Done: every Split item, 1 to 8, and duckworth-0081 B1 to B3 (G10, G18, the G6 withdraw and arbiter
-cases, G20's human check). Single files green: grant-enroll 24, host-run 24, hard-waits 13,
-host-tools 6, grant-migration 5, project-runtime 3, credentials 5, credential-verbs 2, decision-route 5,
-account-migration 3, tester-writes 8, seat sandbox 10, business hosts 4, business 16, cli hosts 5, cli
-app 30, cli host 42, cli names 2, cli credentials 5.
+All 25 killed: A1 to A23, with A3b added for duckworth-0083 N8 and A22 split into A22a and A22b. The
+runner is `mutants.py` outside the repo. Each mutant gets its own session, a 420 s limit with a group kill,
+and a byte restore checked against git status. None hung. Run 1 (04:24Z, on 95f966b1c) killed A1 to A22a
+and stopped at A22b, which survived. Run 2 (04:43Z, on 097892741) killed A22b and A23.
 
-Left, in Sage's slot: mutants A1 to A23, then the whole bus, business and cli suites and every
-`scripts/test-*.sh`. Then the manifest and the in-review move.
+- Each kill comes from a named assertion in the mutant's own test files, except A9. Dropping the `hosts`
+  primary key leaves `host_grants`' foreign key with no parent key, so the store refuses to open
+  ("foreign key mismatch") and 28 of 29 tests fail at setup. That's a structural kill, not the S1 test.
+  The schema can't exist without the key (sage-1709).
+- A22b drops the actor filter from `GRANT_EVIDENCE`. The trigger can't stand in for it, because a 3i store
+  can hold a session-written grant row that the 3i-3j step keeps. The grant-migration test "A22b,
+  sage-1703" kills it (see the A22 row above).
+
+Follow-up, not in row a: G18's control calls `runHost` directly, so nothing runs `hg.check` end to end
+with a good pin (duckworth-0083 N9). The #433 VM run covers it.
+
+## Status at 097892741
+
+Done: every Split item, 1 to 8, duckworth-0081 B1 to B3, duckworth-0083 N8, and all 25 mutants killed.
+
+Single files in the slot, all exit 0, 178 pass and 0 fail by an awk sum over 23 logs: bus grant-enroll
+24, host-run 24, grant-migration 6, host-tools 6, account-migration 3, chief-of-staff 18,
+comment-migration 5, hard-waits 13, name-migration 1, project-runtime 3, spec-migration 1,
+thread-migration 3, usage-migration 1, project-files 8, spec-socket 6, spec-review 12, land 17, spec 4;
+harness spec-tools 2, raise-domain 2; business hosts 4; cli hosts 5; seat sandbox 10.
+
+Left: Sage runs the whole bus, business and cli suites and every `scripts/test-*.sh` at the landing gate,
+after Duckworth approves.