Add comprehensive WCAG 2.1 AA accessibility support

- Add VoiceOver labels and hints to all voting layouts, settings, widgets,
  onboarding screens, and entry cells
- Add Reduce Motion support to button animations throughout the app
- Ensure 44x44pt minimum touch targets on widget mood buttons
- Enhance AccessibilityHelpers with Dynamic Type support, ScaledValue wrapper,
  and VoiceOver detection utilities
- Gate premium features (Insights, Month/Year views) behind subscription
- Update widgets to show subscription prompts for non-subscribers

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Shared/Views/InsightsView/InsightsView.swift

@@ -101,26 +101,73 @@ struct InsightsView: View {
             .disabled(iapManager.shouldShowPaywall)
 
             if iapManager.shouldShowPaywall {
-                Color.black.opacity(0.3)
-                    .ignoresSafeArea()
-                    .onTapGesture {
-                        showSubscriptionStore = true
+                // Premium insights prompt
+                VStack(spacing: 24) {
+                    Spacer()
+
+                    // Icon
+                    ZStack {
+                        Circle()
+                            .fill(
+                                LinearGradient(
+                                    colors: [.purple.opacity(0.2), .blue.opacity(0.2)],
+                                    startPoint: .topLeading,
+                                    endPoint: .bottomTrailing
+                                )
+                            )
+                            .frame(width: 100, height: 100)
+
+                        Image(systemName: "sparkles")
+                            .font(.system(size: 44))
+                            .foregroundStyle(
+                                LinearGradient(
+                                    colors: [.purple, .blue],
+                                    startPoint: .topLeading,
+                                    endPoint: .bottomTrailing
+                                )
+                            )
                     }
 
-                VStack {
-                    Spacer()
+                    // Text
+                    VStack(spacing: 12) {
+                        Text("Unlock AI-Powered Insights")
+                            .font(.system(size: 24, weight: .bold, design: .rounded))
+                            .foregroundColor(textColor)
+                            .multilineTextAlignment(.center)
+
+                        Text("Discover patterns in your mood, get personalized recommendations, and understand what affects how you feel.")
+                            .font(.system(size: 16))
+                            .foregroundColor(textColor.opacity(0.7))
+                            .multilineTextAlignment(.center)
+                            .padding(.horizontal, 32)
+                    }
+
+                    // Subscribe button
                     Button {
                         showSubscriptionStore = true
                     } label: {
-                        Text(String(localized: "subscription_required_button"))
-                            .font(.headline)
-                            .foregroundColor(.white)
-                            .frame(maxWidth: .infinity)
-                            .padding()
-                            .background(RoundedRectangle(cornerRadius: 10).fill(Color.pink))
+                        HStack {
+                            Image(systemName: "sparkles")
+                            Text("Get Personal Insights")
+                        }
+                        .font(.system(size: 18, weight: .bold))
+                        .foregroundColor(.white)
+                        .frame(maxWidth: .infinity)
+                        .padding(.vertical, 16)
+                        .background(
+                            LinearGradient(
+                                colors: [.purple, .blue],
+                                startPoint: .leading,
+                                endPoint: .trailing
+                            )
+                        )
+                        .clipShape(RoundedRectangle(cornerRadius: 14))
                     }
-                    .padding()
+                    .padding(.horizontal, 24)
+
+                    Spacer()
                 }
+                .background(theme.currentTheme.bg)
             }
         }
         .sheet(isPresented: $showSubscriptionStore) {