Add Apple Watch companion app with complications and WCSession sync

- Add watchOS app target with mood voting UI (5 mood buttons)
- Add WidgetKit complications (circular, corner, inline, rectangular)
- Add WatchConnectivityManager for bidirectional sync between iOS and watch
- iOS app acts as central coordinator - all mood logging flows through MoodLogger
- Watch votes send to iPhone via WCSession, iPhone logs and notifies watch back
- Widget votes use openAppWhenRun=true to run MoodLogger in main app process
- Add #if !os(watchOS) guards to Mood.swift and Random.swift for compatibility
- Update SKStoreReviewController to AppStore.requestReview (iOS 18 deprecation fix)
- Watch reads user's moodImages preference from GroupUserDefaults for emoji style

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Feels Watch App/FeelsWatchApp.swift

@@ -0,0 +1,23 @@
+//
+//  FeelsWatchApp.swift
+//  Feels Watch App
+//
+//  Entry point for the Apple Watch companion app.
+//
+
+import SwiftUI
+
+@main
+struct FeelsWatchApp: App {
+
+    init() {
+        // Initialize Watch Connectivity for cross-device widget updates
+        _ = WatchConnectivityManager.shared
+    }
+
+    var body: some Scene {
+        WindowGroup {
+            ContentView()
+        }
+    }
+}