diff --git a/src/campaign.ts b/src/campaign.ts
index 6606b17..199c3b1 100644
--- a/src/campaign.ts
+++ b/src/campaign.ts
@@ -2636,8 +2636,8 @@ export async function probeTerminalSpawnObservability(
   const declared = new Set<string>();
   const owned = new Set<string>();
   let previousFocus: string | undefined;
-  let baselineTerminals: ReadonlySet<string> = new Set();
-  let baselineViews: ReadonlySet<string> = new Set();
+  let baselineTerminals: ReadonlySet<string>;
+  let baselineViews: ReadonlySet<string>;
   try {
     const before = await terminalSummary(dispatcher, "before");
     baselineTerminals = new Set(before.terminals);
diff --git a/tests/campaign.test.ts b/tests/campaign.test.ts
index b9aaee8..a7456f8 100644
--- a/tests/campaign.test.ts
+++ b/tests/campaign.test.ts
@@ -51,7 +51,6 @@ import {
   type CtlInvocation,
   type CtlResult,
   type ProcessDispatcherConfig,
-  type SocketDirStat,
 } from "../src/campaign.js";
 import { ProtocolErrorImpl, decodeResponse } from "../src/protocol.js";
 import {