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.

README.md

@@ -1,9 +1,10 @@
 # IceGlass
 
-A macOS menu bar app for NHL game situational awareness.
+NHL game situational awareness for macOS (menu bar) and iPhone (single-page app).
 
 ## Key Features
 
+### macOS menu bar app
 - NHL shield icon in the menu bar with game count
 - Shows games from yesterday, today, and tomorrow grouped by date (configurable)
 - Regular-season rows show league-wide game number (`#547 NYR @ WAS …`)
@@ -11,28 +12,37 @@ A macOS menu bar app for NHL game situational awareness.
 - Game format: `NYR @ WAS 0:2 (FINAL)` / `DAL @ TOR Today @ 7:30 PM`
 - Click a game to open NHL GameCenter; option-click for NHL Videocast
 - Goal scored notifications with scoring team logo
-- Game start notifications on FUT→LIVE state transition
+- Game start / game ended notifications
 - Dynamic polling: 7s during live games, scales back when idle
 - Display Options: choose which days to show (yesterday/today/tomorrow)
 - Refresh Now (⌘R) for immediate updates
 - Launch at Login support
 - About window via IndieAbout
 
+### iPhone app
+- Single scrollable page mirroring the macOS menu's content
+- "Updated …" header showing relative + absolute ET timestamps; turns orange after 5 min, red after 30 min
+- Persistent JSON cache in Application Support so cold launches paint last-known data instantly
+- Pull-to-refresh, plus auto-refresh on scene activation and foreground polling timer
+- Settings sheet (gear, top-right): display option picker + IndieAbout (license + changelog)
+- Tap a game to open NHL GameCenter; tap a series to open the NHL series page
+
 ## Building
 
 Requires XcodeGen to generate the project:
 
 ```bash
 xcodegen generate
-xcodebuild -scheme IceGlass -configuration Debug build
+xcodebuild -scheme IceGlass -configuration Debug build                                                    # macOS
+xcodebuild -scheme IceGlass-iOS -configuration Debug -destination 'platform=iOS Simulator,name=iPhone 17 Pro' build
 ```
 
 ## Architecture
 
-Menu bar app using singleton services pattern:
-- **MainService** — polls NHL scoreboard API, manages game data
-- **MenuManager** — builds dropdown menu with date-grouped games
-- **StatusItemManager** — manages menu bar icon
-- **NotificationManager** — game start and goal scored notifications with team logos
+Two targets sharing a common data layer (`Shared/`) and platform-specific UI:
 
-Uses the NHL Web API (`api-web.nhle.com/v1/scoreboard/now`) for league-wide schedule and score data.
+- **Shared/** — `MainService`, `ApiService`, `AppSettings`, `NHLDataCache`, models, Date/Time/Logger helpers
+- **IceGlass/** — macOS-only managers (MenuManager, StatusItemManager, NotificationManager, AboutWindow)
+- **IceGlass-iOS/** — SwiftUI views, ScoreboardViewModel (`@Observable`)
+
+`MainService` exposes a `MainServiceObserver` protocol; each platform installs its own adapter to bridge data updates into AppKit (macOS) or `@Observable` invalidation (iOS). Data is fetched from the NHL Web API (`api-web.nhle.com/v1/scoreboard/now`, `/standings/{date}`, `/playoff-bracket/{year}`).