row 269 (264b, #1774): BUILD.md M11 kill line is the survivor log assertion at session-launch.test.mjs:309, not the outcome assertion (mutant run 17:49Z, duckworth-0181)

agents/gizmoduck/work/queue-269/BUILD.md

@@ -267,7 +267,7 @@ another fence (sage-2707, C3 duckworth-0128).
 | M8 | a non-default session binds its workspace at the legacy `workspaces/<b>/<instance>` in-sandbox path | T1: `assert.equal` that a named session's in-sandbox workspace is its `session-workspaces/<b>/<instance>/<s>` path, read from the fake adapter's recorded cwd (sage-2717) |
 | M9 | `#threadRows` back to the default session only | T1: the named session's message starts its run |
 | M10 | the `legacy-run-live` refusal removed from check() | the legacy-run-live test: `outcome` equals `[[S, "legacy-run-live"]]` |
-| M11 | recover() keeps a survivor only when the outer pid outlived the kill (the runner ignored) | the legacy-run-live test, same assertion |
+| M11 | recover() keeps a survivor only when the outer pid outlived the kill (the runner ignored) | the legacy-run-live test: the survivor log `assert.ok` (session-launch.test.mjs:309); the host doesn't see the live runner, so the survivor line is never logged (run 17:49Z 10-22, duckworth-0181) |
 | M12 | check() reads every survivor, live or not | the legacy-run-live test: after the runner exits, `settle` gives one launch |
 
 M6 and the halt fences (C2, duckworth-0150). A plain halt never reaches start(). tick() admits first