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>

Shared/AccessibilityIdentifiers.swift

@@ -93,6 +93,9 @@ enum AccessibilityID {
         static func iconPackButton(_ name: String) -> String {
             "customize_iconpack_\(name.lowercased())"
         }
+        static func personalityPackButton(_ name: String) -> String {
+            "customize_personality_\(name.lowercased())"
+        }
         static func appThemeCard(_ name: String) -> String {
             "apptheme_card_\(name.lowercased())"
         }