remove Expo project and all related files

Remove the entire Expo/React Native application: routes (app/), source
code (src/), assets, iOS native build, config plugins, StoreKit config,
npm dependencies, TypeScript/ESLint/Vitest configs, and Expo-specific
documentation. The repository now contains only: admin-web, supabase,
youtube-worker, tabatago-swift, docs, scripts, and CI/tooling configs.

tabatago-swift/TabataGo/App/AppState.swift

@@ -0,0 +1,18 @@
+import Foundation
+import Observation
+
+/// Global app bootstrap state — initialises all services once at launch.
+@Observable
+final class AppState {
+
+    var isBootstrapped = false
+
+    @MainActor
+    func bootstrap() async {
+        guard !isBootstrapped else { return }
+        guard !AppEnvironment.isPreview else { isBootstrapped = true; return }
+        await PurchaseService.shared.initialize()
+        AnalyticsService.shared.initialize()
+        isBootstrapped = true
+    }
+}

tabatago-swift/TabataGo/App/RootView.swift

@@ -0,0 +1,21 @@
+import SwiftUI
+import SwiftData
+
+/// Root entry point: decides between onboarding and main tab view.
+struct RootView: View {
+    @Environment(AppState.self) private var appState
+    @Query private var profiles: [UserProfile]
+
+    private var profile: UserProfile? { profiles.first }
+
+    var body: some View {
+        Group {
+            if let profile, profile.onboardingCompleted {
+                MainTabView()
+            } else {
+                OnboardingView()
+            }
+        }
+        .animation(.easeInOut(duration: 0.3), value: profile?.onboardingCompleted)
+    }
+}

tabatago-swift/TabataGo/App/TabataGoApp.swift

@@ -0,0 +1,19 @@
+import SwiftUI
+import SwiftData
+
+@main
+struct TabataGoApp: App {
+
+    @State private var appState = AppState()
+
+    var body: some Scene {
+        WindowGroup {
+            RootView()
+                .environment(appState)
+                .modelContainer(TabataGoSchema.container)
+                .task {
+                    await appState.bootstrap()
+                }
+        }
+    }
+}