diff --git a/test/lock-utils.test.mjs b/test/lock-utils.test.mjs
index 1bdac59..74d4300 100644
--- a/test/lock-utils.test.mjs
+++ b/test/lock-utils.test.mjs
@@ -1,8 +1,71 @@
 import { describe, it, mock } from 'node:test';
 import assert from 'node:assert/strict';
-import { getCompletedAgents } from '../src/lock-utils.mjs';
+import {
+  getCompletedAgents,
+  withTimeout,
+  relayListLabel,
+  mergeRelayList
+} from '../src/lock-utils.mjs';
 
 describe('lock-utils', () => {
+  describe('withTimeout', () => {
+    it('resolves if promise completes before timeout', async () => {
+      const result = await withTimeout(
+        Promise.resolve('success'),
+        100,
+        'timed out'
+      );
+      assert.equal(result, 'success');
+    });
+
+    it('rejects with timeout message if promise takes too long', async () => {
+      const slowPromise = new Promise((resolve) => setTimeout(resolve, 100));
+      await assert.rejects(
+        () => withTimeout(slowPromise, 10, 'timed out'),
+        { message: 'timed out' }
+      );
+    });
+
+    it('rejects if the promise rejects before timeout', async () => {
+      await assert.rejects(
+        () => withTimeout(Promise.reject(new Error('fail')), 100, 'timed out'),
+        { message: 'fail' }
+      );
+    });
+  });
+
+  describe('relayListLabel', () => {
+    it('joins relays with comma and space', () => {
+      assert.equal(relayListLabel(['wss://relay1', 'wss://relay2']), 'wss://relay1, wss://relay2');
+    });
+
+    it('handles single relay', () => {
+      assert.equal(relayListLabel(['wss://relay1']), 'wss://relay1');
+    });
+
+    it('handles empty list', () => {
+      assert.equal(relayListLabel([]), '');
+    });
+  });
+
+  describe('mergeRelayList', () => {
+    it('merges two lists', () => {
+      const result = mergeRelayList(['r1'], ['r2']);
+      assert.deepEqual(result, ['r1', 'r2']);
+    });
+
+    it('deduplicates relays', () => {
+      const result = mergeRelayList(['r1', 'r2'], ['r2', 'r3']);
+      assert.deepEqual(result, ['r1', 'r2', 'r3']);
+    });
+
+    it('handles empty lists', () => {
+      assert.deepEqual(mergeRelayList([], ['r1']), ['r1']);
+      assert.deepEqual(mergeRelayList(['r1'], []), ['r1']);
+      assert.deepEqual(mergeRelayList([], []), []);
+    });
+  });
+
   describe('getCompletedAgents', () => {
     // Helper to create deps
     const createDeps = (overrides = {}) => ({
diff --git a/torch-config-test.json b/torch-config-test.json
deleted file mode 100644
index 3205b36..0000000
--- a/torch-config-test.json
+++ /dev/null
@@ -1,8 +0,0 @@
-{
-  "dashboard": {
-    "auth": "admin:password123",
-    "relays": [
-      "wss://secure.relay.com"
-    ]
-  }
-}
\ No newline at end of file