feat: add XCUITest suite with 10 critical flow tests and QA test plan

Add comprehensive UI test infrastructure with Page Object pattern,
accessibility identifiers, UI test mode (--ui-testing, --reset-state,
--disable-animations), and 10 passing tests covering app launch, tab
navigation, trip wizard, trip saving, settings, schedule, and
accessibility at XXXL Dynamic Type. Also adds a 229-case QA test plan
Excel workbook for manual QA handoff.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

SportsTime/Features/Home/Views/HomeView.swift

@@ -52,6 +52,7 @@ struct HomeView: View {
                 Label("Home", systemImage: "house.fill")
             }
             .tag(0)
+            .accessibilityIdentifier("tab.home")
 
             // Schedule Tab
             NavigationStack {
@@ -61,6 +62,7 @@ struct HomeView: View {
                 Label("Schedule", systemImage: "calendar")
             }
             .tag(1)
+            .accessibilityIdentifier("tab.schedule")
 
             // My Trips Tab
             NavigationStack {
@@ -70,6 +72,7 @@ struct HomeView: View {
                 Label("My Trips", systemImage: "suitcase.fill")
             }
             .tag(2)
+            .accessibilityIdentifier("tab.myTrips")
 
             // Progress Tab
             NavigationStack {
@@ -85,6 +88,7 @@ struct HomeView: View {
                 Label("Progress", systemImage: "chart.bar.fill")
             }
             .tag(3)
+            .accessibilityIdentifier("tab.progress")
 
             // Settings Tab
             NavigationStack {
@@ -94,6 +98,7 @@ struct HomeView: View {
                 Label("Settings", systemImage: "gear")
             }
             .tag(4)
+            .accessibilityIdentifier("tab.settings")
         }
         .tint(Theme.warmOrange)
         .onChange(of: selectedTab) { oldTab, newTab in
@@ -633,6 +638,7 @@ struct SavedTripsListView: View {
                 .padding(Theme.Spacing.xl)
                 .background(Theme.cardBackground(colorScheme))
                 .clipShape(RoundedRectangle(cornerRadius: Theme.CornerRadius.large))
+                .accessibilityIdentifier("myTrips.emptyState")
             } else {
                 ForEach(Array(sortedTrips.enumerated()), id: \.element.id) { index, savedTrip in
                     if let trip = savedTrip.trip {

SportsTime/Features/Home/Views/Variants/Classic/HomeContent_ClassicAnimated.swift

@@ -82,6 +82,7 @@ struct HomeContent_ClassicAnimated: View {
             }
             .pressableStyle()
             .glowEffect(color: Theme.warmOrange, radius: 12)
+            .accessibilityIdentifier("home.startPlanningButton")
         }
         .padding(Theme.Spacing.lg)
         .background(Theme.cardBackground(colorScheme))