Add sharing style picker for design variation selection

Users can now swipe between design variations (e.g. Gradient vs Color Block)
when sharing from month/year views and the sharing templates list. Removes
#if DEBUG wrappers from variation files and disables auto-start demo animation.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Shared/Views/YearView/YearView.swift

@@ -22,6 +22,7 @@ struct YearView: View {
     @StateObject private var shareImage = ShareImageStateViewModel()
     @State private var trialWarningHidden = false
     @State private var showSubscriptionStore = false
+    @State private var sharePickerData: SharePickerData? = nil
 
     /// Cached sorted year keys to avoid re-sorting in ForEach on every render
     @State private var cachedSortedYearKeys: [Int] = []
@@ -146,9 +147,23 @@ struct YearView: View {
                                 filteredDays: filteredDays.currentFilters,
                                 yearIndex: yearIndex,
                                 demoManager: demoManager,
-                                onShare: { image in
-                                    shareImage.selectedShareImage = image
-                                    shareImage.showSheet = true
+                                onShare: { metrics, entries, year in
+                                    let totalCount = entries.filter { ![.missing, .placeholder].contains($0.mood) }.count
+                                    sharePickerData = SharePickerData(
+                                        title: String(year),
+                                        designs: [
+                                            SharingDesign(
+                                                name: "Gradient",
+                                                shareView: AnyView(AllMoodsV2(metrics: metrics, totalCount: totalCount)),
+                                                image: { AllMoodsV2(metrics: metrics, totalCount: totalCount).image }
+                                            ),
+                                            SharingDesign(
+                                                name: "Color Block",
+                                                shareView: AnyView(AllMoodsV5(metrics: metrics, totalCount: totalCount)),
+                                                image: { AllMoodsV5(metrics: metrics, totalCount: totalCount).image }
+                                            ),
+                                        ]
+                                    )
                                 }
                             )
                         }
@@ -260,23 +275,13 @@ struct YearView: View {
         .sheet(isPresented: $showSubscriptionStore) {
             FeelsSubscriptionStoreView()
         }
-        .sheet(isPresented: $shareImage.showSheet) {
-            if let uiImage = shareImage.selectedShareImage {
-                ImageOnlyShareSheet(photo: uiImage)
-            }
+        .sheet(item: $sharePickerData) { data in
+            SharingStylePickerView(title: data.title, designs: data.designs)
         }
         .onAppear(perform: {
             self.viewModel.filterEntries(startDate: Date(timeIntervalSince1970: 0), endDate: Date())
             cachedSortedYearKeys = Array(viewModel.data.keys.sorted(by: >))
-            #if DEBUG
-            // Auto-start or restart demo mode for video recording
-            if demoManager.isDemoMode {
-                // Already in demo mode (e.g., came from MonthView), restart animation
-                demoManager.restartAnimation()
-            } else {
-                demoManager.startDemoMode()
-            }
-            #endif
+            // Demo mode is toggled manually via triple-tap
         })
         .onChange(of: viewModel.data.keys.count) { _, _ in
             cachedSortedYearKeys = Array(viewModel.data.keys.sorted(by: >))
@@ -321,7 +326,7 @@ struct YearCard: View, Equatable {
     let filteredDays: [Int]
     let yearIndex: Int  // Which year this is (0 = most recent)
     @ObservedObject var demoManager: DemoAnimationManager
-    let onShare: (UIImage) -> Void
+    let onShare: ([MoodMetrics], [MoodEntryModel], Int) -> Void
 
     private var textColor: Color { theme.currentTheme.labelColor }
 
@@ -519,8 +524,7 @@ struct YearCard: View, Equatable {
                 Spacer()
 
                 Button(action: {
-                    let image = shareableView.asImage(size: CGSize(width: 400, height: 750))
-                    onShare(image)
+                    onShare(cachedMetrics, yearEntries, year)
                 }) {
                     Image(systemName: "square.and.arrow.up")
                         .font(.subheadline.weight(.medium))