Add debug bypass subscription toggle, tests, and data layer improvements

- Add runtime toggle in Settings (DEBUG only) to bypass subscription/hide trial banner
- IAPManager.bypassSubscription is now a @Published var persisted via UserDefaults
- Hide upgrade banner in SettingsTabView and trial warnings when bypass is enabled
- Add FeelsTests directory with integration tests
- Update DataController, DataControllerGET, DataControllerUPDATE
- Update Xcode project and scheme configuration
- Update localization strings and App Store screen docs

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

Shared/Views/SettingsView/SettingsView.swift

@@ -67,6 +67,7 @@ struct SettingsContentView: View {
                 #if DEBUG
                 // Debug section
                 debugSectionHeader
+                bypassSubscriptionToggle
                 trialDateButton
                 animationLabButton
                 paywallPreviewButton
@@ -211,6 +212,35 @@ struct SettingsContentView: View {
         .padding(.horizontal, 4)
     }
 
+    private var bypassSubscriptionToggle: some View {
+        ZStack {
+            theme.currentTheme.secondaryBGColor
+            HStack(spacing: 12) {
+                Image(systemName: "lock.open.fill")
+                    .font(.title2)
+                    .foregroundColor(.green)
+                    .frame(width: 32)
+
+                VStack(alignment: .leading, spacing: 2) {
+                    Text("Bypass Subscription")
+                        .foregroundColor(textColor)
+
+                    Text("Hide trial banner & grant full access")
+                        .font(.caption)
+                        .foregroundStyle(.secondary)
+                }
+
+                Spacer()
+
+                Toggle("", isOn: $iapManager.bypassSubscription)
+                    .labelsHidden()
+            }
+            .padding()
+        }
+        .fixedSize(horizontal: false, vertical: true)
+        .cornerRadius(Constants.viewsCornerRaidus, corners: [.topLeft, .topRight, .bottomLeft, .bottomRight])
+    }
+
     private var trialDateButton: some View {
         ZStack {
             theme.currentTheme.secondaryBGColor
@@ -1282,6 +1312,7 @@ struct SettingsView: View {
                 Group {
                     Divider()
                     Text("Test builds only")
+                    Toggle("Bypass Subscription", isOn: $iapManager.bypassSubscription)
                     addTestDataCell
                     clearDB
                     //                    fixWeekday