test: cover camera list invoke

apps/macos/Tests/ClawdisIPCTests/MacNodeRuntimeTests.swift

@@ -29,4 +29,23 @@ struct MacNodeRuntimeTests {
             BridgeInvokeRequest(id: "req-3", command: ClawdisSystemCommand.notify.rawValue, paramsJSON: json))
         #expect(response.ok == false)
     }
+
+    @Test func handleInvokeCameraListRequiresEnabledCamera() async {
+        let defaults = UserDefaults.standard
+        let previous = defaults.object(forKey: cameraEnabledKey)
+        defaults.set(false, forKey: cameraEnabledKey)
+        defer {
+            if let previous {
+                defaults.set(previous, forKey: cameraEnabledKey)
+            } else {
+                defaults.removeObject(forKey: cameraEnabledKey)
+            }
+        }
+
+        let runtime = MacNodeRuntime()
+        let response = await runtime.handleInvoke(
+            BridgeInvokeRequest(id: "req-4", command: ClawdisCameraCommand.list.rawValue))
+        #expect(response.ok == false)
+        #expect(response.error?.message.contains("CAMERA_DISABLED") == true)
+    }
 }