Hide menu bar icons with a cover instead of moving them off screen

Sliding the icons off the screen meant bringing them all back just to
open one menu, which flickered. Draw a frosted window over the other
apps' icons instead: they keep their real positions, so tapping a tile
opens its menu in place with no reveal, and the cover leaves a gap so
the hamburger is never hidden.

💘 Generated with Crush

Assisted-by: Crush:deepseek-v4.1-flash

Sources/SimpleTopBar/App.swift

@@ -43,27 +43,27 @@ final class AppDelegate: NSObject, NSApplicationDelegate {
 
         AppListModel.shared.start()
         MenuBarItemManager.shared.start()
-        // Create the hamburger before the hider so it is placed in the visible
-        // part of the bar; the hider then contracts the space around it.
+        // Create the hamburger before the cover so its own icon is never covered.
         setupStatusItem()
-        MenuBarHider.shared.prepare()
+        MenuBarItemManager.shared.refresh()
 
         if CommandLine.arguments.contains("--diag-press") {
             DispatchQueue.main.asyncAfter(deadline: .now() + 2.0) {
-                MenuBarHider.shared.suspend()
-            }
-            DispatchQueue.main.asyncAfter(deadline: .now() + 2.25) {
                 if let item = MenuBarItemManager.enumerate().first(where: {
                     $0.title.lowercased().contains("wireguard")
                 }) {
-                    NSLog("diag-press: pressing \(item.appName) after brief reveal")
+                    NSLog("diag-press: pressing \(item.appName)")
                     _ = AXUIElementPerformAction(item.element, kAXPressAction as CFString)
                 }
             }
-            DispatchQueue.main.asyncAfter(deadline: .now() + 2.45) {
-                MenuBarHider.shared.resume()
+            DispatchQueue.main.asyncAfter(deadline: .now() + 3.5) {
+                dumpWindows()
             }
-            DispatchQueue.main.asyncAfter(deadline: .now() + 4.5) {
+            return
+        }
+
+        if CommandLine.arguments.contains("--diag-cover") {
+            DispatchQueue.main.asyncAfter(deadline: .now() + 3.0) {
                 dumpWindows()
             }
             return