Adit fix, address copilot comments

__tests__/saveCache.test.ts

@@ -265,6 +265,7 @@ test('save with reserve cache denied by read-only token logs warning (not info)'
     `Failed to save: Unable to reserve cache with key ${primaryKey}. More details: ${deniedMessage}`
   )
 
+  expect(logWarningMock).toHaveBeenCalledTimes(1)
   expect(reserveCacheMock).toHaveBeenCalledTimes(1)
   expect(createTarMock).toHaveBeenCalledTimes(1)
   expect(saveCacheMock).toHaveBeenCalledTimes(0)

__tests__/saveCacheV2.test.ts

@@ -154,6 +154,7 @@ test('create cache entry denied by read-only token logs single warning and skips
     `Failed to save: Unable to reserve cache with key ${key}. More details: ${deniedMessage}`
   )
 
+  expect(warningLogMock).toHaveBeenCalledTimes(1)
   expect(createCacheEntryMock).toHaveBeenCalledWith({
     key,
     version: cacheVersion