Admin page: the top bar clears the status bar in the iOS app (#423)

admin.html's viewport meta lacked viewport-fit=cover, which index.html
has. Without it env(safe-area-inset-top) is 0, so the top bar's padding
did not clear the clock in the app's full-screen web view, and the back
arrow sat under it and could not be tapped. Seen in the simulator, the
built page served locally: the arrow and the title level with the
clock before, below the status bar after.

Also a launch argument, -ipx.noBadgePrompt, so a simulator run can get
past the badge permission dialog.

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

ios/Sources/Badge.swift

@@ -32,6 +32,9 @@ enum Badge {
 
     /// Asks once, for the badge alone: no alerts, no sounds.
     static func requestPermission() {
+        // `-ipx.noBadgePrompt YES` on the launch arguments: a simulator run that drives the page
+        // has nobody to tap Allow, and the dialog covers it.
+        if UserDefaults.standard.bool(forKey: "ipx.noBadgePrompt") { return }
         UNUserNotificationCenter.current().requestAuthorization(options: [.badge]) { _, _ in }
     }