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/Core/Theme/DemoMode.swift

@@ -61,11 +61,28 @@ enum DemoConfig {
     static let demoTripIndex: Int = 3
 }
 
-// MARK: - Demo Mode Launch Argument
+// MARK: - Launch Arguments
 
 extension ProcessInfo {
     /// Check if app was launched in demo mode
     static var isDemoMode: Bool {
         ProcessInfo.processInfo.arguments.contains("-DemoMode")
     }
+
+    /// Check if app was launched for UI testing.
+    /// When true, the app suppresses non-essential popups, disables analytics
+    /// and CloudKit sync, forces Pro mode, and disables animations.
+    static var isUITesting: Bool {
+        ProcessInfo.processInfo.arguments.contains("--ui-testing")
+    }
+
+    /// Check if state should be reset before the test run.
+    static var shouldResetState: Bool {
+        ProcessInfo.processInfo.arguments.contains("--reset-state")
+    }
+
+    /// Check if animations should be disabled.
+    static var shouldDisableAnimations: Bool {
+        ProcessInfo.processInfo.arguments.contains("--disable-animations")
+    }
 }