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/TipModalView.swift

@@ -140,6 +140,7 @@ struct TipModalView: View {
                         y: 6
                     )
             }
+            .accessibilityIdentifier(AccessibilityID.TipModal.dismissButton)
             .padding(.horizontal, 24)
             .padding(.bottom, 24)
             .opacity(appeared ? 1 : 0)
@@ -308,6 +309,7 @@ struct TipsPreviewView: View {
                         }
                         .padding(.vertical, 4)
                     }
+                    .accessibilityIdentifier(AccessibilityID.TipModal.tipPreviewButton(index))
                 }
             } header: {
                 Text("Tap to preview")
@@ -320,11 +322,13 @@ struct TipsPreviewView: View {
                     ReflectTipsManager.shared.resetAllTips()
                 }
                 .foregroundColor(.red)
+                .accessibilityIdentifier(AccessibilityID.TipModal.resetTipsButton)
 
                 Toggle("Tips Enabled", isOn: Binding(
                     get: { ReflectTipsManager.shared.tipsEnabled },
                     set: { ReflectTipsManager.shared.tipsEnabled = $0 }
                 ))
+                .accessibilityIdentifier(AccessibilityID.TipModal.tipsEnabledToggle)
             } header: {
                 Text("Settings")
             }
@@ -346,6 +350,7 @@ struct TipsPreviewView: View {
                 Button("Done") {
                     dismiss()
                 }
+                .accessibilityIdentifier(AccessibilityID.TipModal.doneButton)
             }
         }
         .sheet(item: Binding(