Add iPhone target with shared data layer and persistent cache

Two-target restructure: shared sources (models, services, settings,
extensions, team logos) move into Shared/, consumed by both the
existing macOS menu bar app and a new iOS app. MainService no longer
imports AppKit — platform code attaches via a MainServiceObserver
protocol (MacObserverAdapter wires back to MenuManager / StatusItemManager
/ NotificationManager).

iPhone app is a single SwiftUI page mirroring the macOS menu (playoff
round + yesterday/today/tomorrow), with a gear-icon settings sheet
(display option + IndieAbout for license/changelog). Persistent JSON
snapshot in Application Support paints last-known data on cold launch;
"Updated …" header escalates secondary → orange (>5min) → red (>30min)
so staleness is visually unmistakable. Foreground polling, scenePhase
refresh, and pull-to-refresh; no notifications on iOS in v1.

IceGlass/AppDelegate.swift

@@ -16,11 +16,15 @@ class AppDelegate: NSObject, NSApplicationDelegate, UNUserNotificationCenterDele
     )
 
     private var mainService = MainService.shared
+    private let observerAdapter = MacObserverAdapter()
 
     func applicationDidFinishLaunching(_ notification: Notification) {
         logger.info("applicationDidFinishLaunching")
         UNUserNotificationCenter.current().delegate = self
 
+        // Install MainService → AppKit bridge before any data flows in.
+        mainService.observer = observerAdapter
+
         // Force re-register with Launch Services to refresh cached icon
         LSRegisterURL(Bundle.main.bundleURL as CFURL, true)
 
@@ -48,3 +52,29 @@ class AppDelegate: NSObject, NSApplicationDelegate, UNUserNotificationCenterDele
         completionHandler()
     }
 }
+
+/// Bridges MainService callbacks to the macOS-only managers so MainService
+/// stays AppKit-free and shareable with the iOS target.
+@MainActor
+final class MacObserverAdapter: MainServiceObserver {
+    func mainServiceDidUpdate() {
+        StatusItemManager.shared.updateStatusText(MainService.shared.statusBarText)
+        MenuManager.shared.scoreboardChanged()
+    }
+
+    func mainServiceDidDetectGameStart(_ game: Scoreboard.Game) {
+        NotificationManager.shared.notifyGameStarted(game)
+    }
+
+    func mainServiceDidDetectGoal(
+        _ game: Scoreboard.Game,
+        scoringTeam: Scoreboard.Game.Team,
+        scorer: GoalScorer?
+    ) {
+        NotificationManager.shared.notifyGoalScored(game, scoringTeam: scoringTeam, scorer: scorer)
+    }
+
+    func mainServiceDidDetectGameEnd(_ game: Scoreboard.Game) {
+        NotificationManager.shared.notifyGameEnded(game)
+    }
+}