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/Managers/MenuManager.swift

@@ -366,7 +366,7 @@ class MenuManager: @unchecked Sendable {
             trailing = ""
         } else if let n = series.nextGameNumber {
             statusTag = "(Game \(n))"
-            trailing = roundItem.nextGame.map { Self.nextGameLabel(for: $0) } ?? ""
+            trailing = roundItem.nextGame?.nextGameLabel ?? ""
         } else {
             statusTag = ""
             trailing = ""
@@ -381,28 +381,4 @@ class MenuManager: @unchecked Sendable {
         return item
     }
 
-    private static func nextGameLabel(for game: Scoreboard.Game) -> String {
-        let state = game.parsedGameState
-        if state.isLive {
-            return state.shortTag
-        }
-        let dayLabel: String
-        switch game.gameDate {
-        case Date.todayET: dayLabel = "Today"
-        case Date.tomorrowET: dayLabel = "Tomorrow"
-        case Date.yesterdayET: dayLabel = "Yesterday"
-        default:
-            let formatter = DateFormatter()
-            formatter.dateFormat = "yyyy-MM-dd"
-            formatter.timeZone = TimeZone(identifier: "America/New_York")
-            if let date = formatter.date(from: game.gameDate) {
-                dayLabel = date.formatDateET(format: "EEE")
-            } else {
-                dayLabel = ""
-            }
-        }
-        let time = game.startTimeET.trimmingCharacters(in: .whitespaces)
-        let base = "\(dayLabel) \(time)"
-        return state == .pre ? "\(base) (PRE)" : base
-    }
 }