Add 3 passing UI tests (batch 4): personality pack, Spanish locale, accessibility text size

- TC-052: Personality pack selection in Customize tab with accessibility IDs
- TC-137: Spanish localization verification (Ajustes, tab labels)
- TC-142: App navigable at XXL accessibility text size

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

Tests iOS/Screens/CustomizeScreen.swift

@@ -56,6 +56,16 @@ struct CustomizeScreen {
         button.tapWhenReady(timeout: 5)
     }
 
+    func personalityPackButton(named name: String) -> XCUIElement {
+        app.element(UITestID.Customize.personalityPackButton(name))
+    }
+
+    func selectPersonalityPack(_ name: String) {
+        let button = personalityPackButton(named: name)
+        _ = app.swipeUntilExists(button, direction: .up, maxSwipes: 8)
+        button.tapWhenReady(timeout: 5)
+    }
+
     // MARK: - Assertions
 
     func assertThemeButtonExists(_ name: String, file: StaticString = #file, line: UInt = #line) {