# issue-24136 row6 proof — test commit 08b1f88a8b on ee96b4b5a2

## Mutation (removed runId guard only)
diff --git a/apps/server/src/orchestration-v2/Orchestrator.ts b/apps/server/src/orchestration-v2/Orchestrator.ts
index 6f1eedd322..e9b846ce35 100644
--- a/apps/server/src/orchestration-v2/Orchestrator.ts
+++ b/apps/server/src/orchestration-v2/Orchestrator.ts
@@ -3080,7 +3080,7 @@ const makeOrchestrator = Effect.fn("orchestrationV2.Orchestrator.layer")(functio
         // Checked here, not by the caller, so a newer run or a visit that lands
         // while the deferred mark is in flight still wins.
         markUnreadVisitedAt =
-          latestRun?.id === command.runId &&
+          latestRun !== undefined &&
           latestRun.status === "completed" &&
           latestRunCompletedAt !== null &&
           (thread.lastVisitedAt === null ||

## RED (mutated, filter 'deferred mark-unread')
[11:18:41.026] ERROR (#3098): Error [AssertionError]: expected DateTime.Utc(1970-01-01T00:00:03.999Z) to deeply equal DateTime.Utc(1970-01-01T00:00:03.500Z)
  expected: DateTime.Utc(1970-01-01T00:00:03.500Z),
     × keeps a visit when a deferred mark-unread lands after a newer run completed 60ms
⎯⎯⎯⎯⎯⎯⎯ Failed Tests 1 ⎯⎯⎯⎯⎯⎯⎯
 FAIL  src/orchestration-v2/runtimeLayer.test.ts > OrchestrationV2LayerLive lifecycle > keeps a visit when a deferred mark-unread lands after a newer run completed
AssertionError: expected DateTime.Utc(1970-01-01T00:00:03.999Z) to deeply equal DateTime.Utc(1970-01-01T00:00:03.500Z)
 ❯ src/orchestration-v2/runtimeLayer.test.ts:4009:14
 Test Files  1 failed (1)
      Tests  1 failed | 1 passed | 88 skipped (90)

## GREEN (restored implementation, full runtimeLayer.test.ts)
 Test Files  1 passed (1)
      Tests  90 passed (90)
   Duration  12.08s (tests 51%, import 31%, transform 17%, setup 1%)