diff --git a/src/__tests__/renderer/hooks/useAgentConfiguration.test.ts b/src/__tests__/renderer/hooks/useAgentConfiguration.test.ts
index 13b37ec6d..0ce7429fe 100644
--- a/src/__tests__/renderer/hooks/useAgentConfiguration.test.ts
+++ b/src/__tests__/renderer/hooks/useAgentConfiguration.test.ts
@@ -254,10 +254,8 @@ describe('useAgentConfiguration', () => {
 			});
 
 			await waitFor(() => {
-				expect(mockGetConfig).toHaveBeenCalledWith('claude-code');
+				expect(result.current.agentConfig).toEqual({ model: 'opus' });
 			});
-
-			expect(result.current.agentConfig).toEqual({ model: 'opus' });
 		});
 	});
 
diff --git a/src/main/constants.ts b/src/main/constants.ts
index 7ea4307dd..7cea3cec1 100644
--- a/src/main/constants.ts
+++ b/src/main/constants.ts
@@ -6,7 +6,7 @@
  */
 
 import path from 'path';
-import os from 'os';
+import * as os from 'node:os';
 
 // ============================================================================
 // Pre-compiled Regex Patterns (Performance Optimization)