Complete accessibility identifier coverage across all 152 project files

Exhaustive file-by-file audit of every Swift file in the project (iOS app,
Watch app, Widget extension). Every interactive UI element — buttons, toggles,
pickers, links, menus, tap gestures, text editors, color pickers, photo
pickers — now has an accessibilityIdentifier for XCUITest automation.

46 files changed across Shared/, Onboarding/, Watch App/, and Widget targets.
Added ~100 new ID definitions covering settings debug controls, export/photo
views, sharing templates, customization subviews, onboarding flows, tip
modals, widget voting buttons, and watch mood buttons.

Shared/Views/CustomizeView/SubViews/CustomWigetView.swift

@@ -23,6 +23,7 @@ struct CustomWigetView: View {
                             CustomWidgetView(customWidgetModel: widget)
                                 .frame(width: 50, height:  50)
                                 .cornerRadius(10)
+                                .accessibilityIdentifier(AccessibilityID.Customize.customWidget(UserDefaultsStore.getCustomWidgets().firstIndex(where: { $0.uuid == widget.uuid }) ?? 0))
                                 .onTapGesture {
                                     AnalyticsManager.shared.track(.widgetViewed)
                                     selectedWidget.selectedItem = widget.copy() as? CustomWidgetModel
@@ -34,6 +35,7 @@ struct CustomWigetView: View {
                             .overlay(
                                 Image(systemName: "plus")
                             )
+                            .accessibilityIdentifier(AccessibilityID.Customize.customWidgetAdd)
                             .onTapGesture {
                                 AnalyticsManager.shared.track(.widgetCreateTapped)
                                 selectedWidget.selectedItem = CustomWidgetModel.randomWidget
@@ -47,6 +49,7 @@ struct CustomWigetView: View {
                 .cornerRadius(10)
                 
                 Text("[\(String(localized: "how_to_add_widget"))](https://support.apple.com/guide/iphone/add-widgets-iphb8f1bf206/ios)")
+                    .accessibilityIdentifier(AccessibilityID.Customize.widgetHowToLink)
                     .accentColor(textColor)
                     .padding(.bottom)
             }