Refactor widgets into separate focused files

Split the two large widget files (~2000 lines combined) into 10 focused files:
- WidgetBundle.swift: Main @main bundle registration
- WidgetModels.swift: Shared data models (WatchTimelineView, SimpleEntry, etc.)
- WidgetProviders.swift: Timeline providers and TimeLineCreator
- WidgetSharedViews.swift: Shared voting views
- FeelsTimelineWidget.swift: Timeline widget (small/medium/large)
- FeelsVoteWidget.swift: Vote widget with stats views
- FeelsIconWidget.swift: Custom icon widget
- FeelsGraphicWidget.swift: Graphic mood widget
- FeelsMoodControlWidget.swift: Control Center widget
- FeelsLiveActivity.swift: Live Activity with proper previews

Preserves real-time update architecture (VoteMoodIntent, WidgetCenter,
WidgetDataProvider patterns). Adds proper Live Activity preview support
with sample content states.

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

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

FeelsWidget2/FeelsIconWidget.swift

@@ -0,0 +1,76 @@
+//
+//  FeelsIconWidget.swift
+//  FeelsWidget
+//
+//  Custom icon widget (small only)
+//
+
+import WidgetKit
+import SwiftUI
+import Intents
+
+// MARK: - Widget Configuration
+
+struct FeelsIconWidget: Widget {
+    let kind: String = "FeelsIconWidget"
+
+    var body: some WidgetConfiguration {
+        IntentConfiguration(kind: kind,
+                            intent: ConfigurationIntent.self,
+                            provider: Provider()) { entry in
+            FeelsIconWidgetEntryView(entry: entry)
+        }
+                            .configurationDisplayName("Feels Icon")
+                            .description("")
+                            .supportedFamilies([.systemSmall])
+                            .contentMarginsDisabled()
+    }
+}
+
+// MARK: - Entry View
+
+struct FeelsIconWidgetEntryView: View {
+    @Environment(\.sizeCategory) var sizeCategory
+    @Environment(\.widgetFamily) var family
+
+    var entry: Provider.Entry
+
+    @ViewBuilder
+    var body: some View {
+        SmallIconView(entry: entry)
+    }
+}
+
+// MARK: - Small Icon View
+
+struct SmallIconView: View {
+    var entry: Provider.Entry
+
+    private var customWidget: CustomWidgetModel {
+        UserDefaultsStore.getCustomWidgets().first(where: { $0.inUse == true })
+            ?? CustomWidgetModel.randomWidget
+    }
+
+    var body: some View {
+        CustomWidgetView(customWidgetModel: customWidget)
+            .ignoresSafeArea()
+            .containerBackground(for: .widget) {
+                customWidget.bgColor
+            }
+    }
+}
+
+// MARK: - Preview
+
+#Preview("Custom Icon", as: .systemSmall) {
+    FeelsIconWidget()
+} timeline: {
+    SimpleEntry(
+        date: Date(),
+        configuration: ConfigurationIntent(),
+        timeLineViews: nil,
+        hasSubscription: true,
+        hasVotedToday: true,
+        promptText: ""
+    )
+}