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

apps/macos/Sources/OpenClaw/SimpleFileWatcher.swift

@@ -0,0 +1,21 @@
+import Foundation
+
+final class SimpleFileWatcher: @unchecked Sendable {
+    private let watcher: CoalescingFSEventsWatcher
+
+    init(_ watcher: CoalescingFSEventsWatcher) {
+        self.watcher = watcher
+    }
+
+    deinit {
+        self.stop()
+    }
+
+    func start() {
+        self.watcher.start()
+    }
+
+    func stop() {
+        self.watcher.stop()
+    }
+}