fix: raise Sparkle windows above the floating panel

Sparkle's update / progress / installed-version windows are plain
NSWindows at .normal level, so the TerminalPanel (level .floating)
and the NotchWindow (level .statusBar) both occluded them — users
saw 'check for updates' do nothing visible.

Watch NSWindow.didBecomeKeyNotification globally and, when the new
key window belongs to Sparkle (class or delegate name prefix 'SU' /
contains 'Sparkle'), promote it to .popUpMenu and add it to the
active space. Also collapses the notch hover so the prompt is
unobstructed.

Author: javierpr0

Notchy/AppDelegate.swift

@@ -47,6 +47,7 @@ class AppDelegate: NSObject, NSApplicationDelegate {
         }
         setupHotkey()
         setupUpdater()
+        observeUpdaterWindows()
         FullDiskAccessChecker.promptIfNeeded()
 
         NotificationCenter.default.addObserver(
@@ -57,6 +58,37 @@ class AppDelegate: NSObject, NSApplicationDelegate {
         )
     }
 
+    /// Sparkle's update / progress / installed-version windows are plain
+    /// NSWindows at .normal level, so our floating TerminalPanel obscures
+    /// them. Watch every NSWindow that becomes key and, if it's owned by
+    /// Sparkle, raise it to a level above the panel and the notch pill.
+    private func observeUpdaterWindows() {
+        NotificationCenter.default.addObserver(
+            forName: NSWindow.didBecomeKeyNotification,
+            object: nil,
+            queue: .main
+        ) { [weak self] note in
+            guard let window = note.object as? NSWindow,
+                  Self.isSparkleWindow(window) else { return }
+            // .popUpMenu (101) is above .floating (3), .statusBar (25), and
+            // .modalPanel (8) — guarantees the update prompt is reachable
+            // even with the notch + panel both showing.
+            window.level = .popUpMenu
+            window.collectionBehavior.insert(.moveToActiveSpace)
+            self?.notchWindow?.endHover()
+        }
+    }
+
+    private static func isSparkleWindow(_ window: NSWindow) -> Bool {
+        let className = String(describing: type(of: window))
+        if className.hasPrefix("SU") || className.contains("Sparkle") { return true }
+        if let delegate = window.delegate {
+            let delegateClass = String(describing: type(of: delegate))
+            if delegateClass.hasPrefix("SU") || delegateClass.contains("Sparkle") { return true }
+        }
+        return false
+    }
+
     @objc private func handleCheckForUpdates() {
         updaterController?.checkForUpdates(nil)
     }