diff --git a/apps/macos/Sources/Clawdis/HealthStore.swift b/apps/macos/Sources/Clawdis/HealthStore.swift
index ce4d0b69e..bced307fa 100644
--- a/apps/macos/Sources/Clawdis/HealthStore.swift
+++ b/apps/macos/Sources/Clawdis/HealthStore.swift
@@ -67,7 +67,10 @@ final class HealthStore: ObservableObject {
     private let refreshInterval: TimeInterval = 60
 
     private init() {
-        self.start()
+        // Avoid background health polling in SwiftUI previews and tests.
+        if !ProcessInfo.processInfo.isPreview, !ProcessInfo.processInfo.isRunningTests {
+            self.start()
+        }
     }
 
     func start() {
diff --git a/apps/macos/Sources/Clawdis/Utilities.swift b/apps/macos/Sources/Clawdis/Utilities.swift
index ab724b9f8..f277df620 100644
--- a/apps/macos/Sources/Clawdis/Utilities.swift
+++ b/apps/macos/Sources/Clawdis/Utilities.swift
@@ -5,6 +5,15 @@ extension ProcessInfo {
     var isPreview: Bool {
         self.environment["XCODE_RUNNING_FOR_PREVIEWS"] == "1"
     }
+
+    var isRunningTests: Bool {
+        // SwiftPM test bundles are typically loaded from a `.xctest` bundle.
+        // We also check common XCTest env vars because some runners still set them.
+        if Bundle.main.bundleURL.pathExtension == "xctest" { return true }
+        return self.environment["XCTestConfigurationFilePath"] != nil
+            || self.environment["XCTestBundlePath"] != nil
+            || self.environment["XCTestSessionIdentifier"] != nil
+    }
 }
 
 enum LaunchdManager {