Fix theme selection bug and update onboarding with AppTheme picker

- Change Theme enum from Int to String raw values to fix theme selection bug
- Replace OnboardingStyle icon/color pickers with unified AppTheme grid
- Remove visible text labels from voting layouts while keeping accessibility labels (WCAG 2.1 AA compliant)
- Update widget voting views to use icons only with proper accessibility support
- Consolidate app icons to single unified icon set

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

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

Shared/Views/CustomizeView/CustomizeView.swift

@@ -117,9 +117,9 @@ struct CustomizeContentView: View {
                 }
 
                 // WIDGETS
-                SettingsSection(title: "Widgets") {
-                    CustomWidgetSection()
-                }
+//                SettingsSection(title: "Widgets") {
+//                    CustomWidgetSection()
+//                }
 
                 // NOTIFICATIONS
                 SettingsSection(title: "Notifications") {
@@ -208,9 +208,9 @@ struct CustomizeView: View {
                 }
 
                 // WIDGETS
-                SettingsSection(title: "Widgets") {
-                    CustomWidgetSection()
-                }
+//                SettingsSection(title: "Widgets") {
+//                    CustomWidgetSection()
+//                }
 
                 // NOTIFICATIONS
                 SettingsSection(title: "Notifications") {
@@ -330,7 +330,7 @@ struct ThemePickerCompact: View {
                             .foregroundColor(theme == aTheme ? .accentColor : textColor.opacity(0.6))
                     }
                 }
-                .buttonStyle(.plain)
+                .buttonStyle(BorderlessButtonStyle())
             }
             Spacer()
         }

Shared/Views/CustomizeView/SubViews/ThemePickerView.swift

@@ -9,42 +9,19 @@ import SwiftUI
 
 struct ThemePickerView: View {
     @Environment(\.colorScheme) var colorScheme
-    
-    @AppStorage(UserDefaultsStore.Keys.theme.rawValue, store: GroupUserDefaults.groupDefaults) private var theme: Theme = .system
+
+    @State private var selectedTheme: Theme = UserDefaultsStore.theme()
     @AppStorage(UserDefaultsStore.Keys.textColor.rawValue, store: GroupUserDefaults.groupDefaults) private var textColor: Color = DefaultTextColor.textColor
-    
+
     var body: some View {
         ZStack {
-            theme.currentTheme.secondaryBGColor
+            selectedTheme.currentTheme.secondaryBGColor
             VStack {
-                HStack {
-                    Spacer()
-                    ForEach(Theme.allCases, id:\.rawValue) { aTheme in
-                        Button(action: {
-                            theme = aTheme
-                            changeTextColor(forTheme: aTheme)
-                            EventLogger.log(event: "change_theme_id", withData: ["id": aTheme.rawValue])
-                        }, label: {
-                            VStack {
-                                aTheme.currentTheme.preview
-                                    .overlay(
-                                        Circle()
-                                            .stroke(Color(UIColor.systemGray), style: StrokeStyle(lineWidth: 2))
-                                    )
-                                Text(aTheme.title)
-                                    .foregroundColor(textColor)
-                                    .font(.body)
-                            }
-                        })
-                        .contentShape(Rectangle())
-                        .background(
-                            RoundedRectangle(cornerRadius: 10, style: .continuous)
-                                .fill(theme == aTheme ? theme.currentTheme.bgColor : .clear)
-                                .padding(-5)
-                            
-                        )
-                        Spacer()
-                    }
+                HStack(spacing: 0) {
+                    themeButton(for: .system)
+                    themeButton(for: .iFeel)
+                    themeButton(for: .dark)
+                    themeButton(for: .light)
                 }
                 .padding(.top)
             }
@@ -52,8 +29,51 @@ struct ThemePickerView: View {
         }
         .fixedSize(horizontal: false, vertical: true)
         .cornerRadius(Constants.viewsCornerRaidus, corners: [.topLeft, .topRight, .bottomLeft, .bottomRight])
+        .onAppear {
+            selectedTheme = UserDefaultsStore.theme()
+        }
     }
-    
+
+    @ViewBuilder
+    private func themeButton(for theme: Theme) -> some View {
+        Button {
+            selectTheme(theme)
+        } label: {
+            VStack {
+                theme.currentTheme.preview
+                    .allowsHitTesting(false)
+                    .overlay(
+                        Circle()
+                            .stroke(Color(UIColor.systemGray), style: StrokeStyle(lineWidth: 2))
+                    )
+                Text(theme.title)
+                    .foregroundColor(textColor)
+                    .font(.body)
+            }
+            .frame(maxWidth: .infinity)
+            .contentShape(Rectangle())
+        }
+        .buttonStyle(.plain)
+        .background(
+            RoundedRectangle(cornerRadius: 10, style: .continuous)
+                .fill(selectedTheme == theme ? selectedTheme.currentTheme.bgColor : .clear)
+                .padding(-5)
+        )
+    }
+
+    private func selectTheme(_ theme: Theme) {
+        // Save theme value
+        GroupUserDefaults.groupDefaults.set(theme.rawValue, forKey: UserDefaultsStore.Keys.theme.rawValue)
+        GroupUserDefaults.groupDefaults.synchronize()
+
+        withAnimation(.easeInOut(duration: 0.2)) {
+            selectedTheme = theme
+        }
+
+        changeTextColor(forTheme: theme)
+        EventLogger.log(event: "change_theme_id", withData: ["id": theme.rawValue])
+    }
+
     private func changeTextColor(forTheme theme: Theme) {
         if [Theme.iFeel, Theme.system].contains(theme) {
             let currentSystemScheme = UITraitCollection.current.userInterfaceStyle