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/SharingTemplates/MonthTotalTemplate.swift

@@ -159,6 +159,7 @@ struct MonthTotalTemplate: View, SharingTemplate {
                         .foregroundColor(Color.white)
                         .padding(.top, 20)
                 })
+                    .accessibilityIdentifier(AccessibilityID.SharingTemplate.shareButton)
                     .sheet(isPresented: self.$shareImage.showSheet) {
                         if let uiImage = self.shareImage.selectedShareImage {
                             ShareSheet(photo: uiImage)
@@ -169,7 +170,7 @@ struct MonthTotalTemplate: View, SharingTemplate {
                         Color.green
                     )
                     .padding(.trailing, -5)
-                
+
                 Button(action: {
                     presentationMode.wrappedValue.dismiss()
                 }, label: {
@@ -179,6 +180,7 @@ struct MonthTotalTemplate: View, SharingTemplate {
                         .foregroundColor(Color.white)
                         .padding(.top, 20)
                 })
+                    .accessibilityIdentifier(AccessibilityID.SharingTemplate.dismissButton)
                     .frame(maxWidth: .infinity, alignment: .center)
                     .background(
                         Color.red