refactor(macos): dedupe UI, pairing, and runtime helpers

apps/macos/Sources/OpenClaw/TrackingAreaSupport.swift

@@ -0,0 +1,22 @@
+import AppKit
+
+enum TrackingAreaSupport {
+    @MainActor
+    static func resetMouseTracking(
+        on view: NSView,
+        tracking: inout NSTrackingArea?,
+        owner: AnyObject)
+    {
+        if let tracking {
+            view.removeTrackingArea(tracking)
+        }
+        let options: NSTrackingArea.Options = [
+            .mouseEnteredAndExited,
+            .activeAlways,
+            .inVisibleRect,
+        ]
+        let area = NSTrackingArea(rect: view.bounds, options: options, owner: owner, userInfo: nil)
+        view.addTrackingArea(area)
+        tracking = area
+    }
+}