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/Persisence/DataControllerUPDATE.swift

@@ -16,6 +16,7 @@ extension DataController {
         }
 
         entry.moodValue = mood.rawValue
+        entry.timestamp = Date()
         saveAndRunDataListeners()
 
         AnalyticsManager.shared.track(.moodUpdated(mood: mood.rawValue))