Migrate from Core Data to SwiftData

- Replace Core Data with SwiftData for iOS 18+
- Create MoodEntryModel as @Model class replacing MoodEntry entity
- Create SharedModelContainer for App Group container sharing
- Create DataController with CRUD extensions replacing PersistenceController
- Update all views and view models to use MoodEntryModel
- Update widget extension to use SwiftData
- Remove old Core Data files (Persistence*.swift, .xcdatamodeld)
- Add EntryType enum with all entry type cases
- Fix widget label truncation with proper spacing and text scaling

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

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

Shared/Views/SmallRollUpHeaderView.swift

@@ -10,18 +10,18 @@ import SwiftUI
 struct SmallRollUpHeaderView: View {
     @Binding var viewType: MainSwitchableViewType
     @AppStorage(UserDefaultsStore.Keys.moodTint.rawValue, store: GroupUserDefaults.groupDefaults) private var moodTint: MoodTints = .Default
-    
+
     @AppStorage(UserDefaultsStore.Keys.shape.rawValue, store: GroupUserDefaults.groupDefaults) private var shape: BGShape = .circle
-    
+
     @AppStorage(UserDefaultsStore.Keys.textColor.rawValue, store: GroupUserDefaults.groupDefaults) private var textColor: Color = DefaultTextColor.textColor
 
-    let entries: [MoodEntry]
+    let entries: [MoodEntryModel]
     private var moodMetrics = [MoodMetrics]()
-    
-    init(entries: [MoodEntry], viewType: Binding<MainSwitchableViewType>) {
+
+    init(entries: [MoodEntryModel], viewType: Binding<MainSwitchableViewType>) {
         self.entries = entries
         self._viewType = viewType
-        
+
         moodMetrics = Random.createTotalPerc(fromEntries: entries)
     }
     
@@ -85,16 +85,16 @@ struct SmallRollUpHeaderView: View {
 struct SmallHeaderView_Previews: PreviewProvider {
     static var previews: some View {
         Group {
-            SmallRollUpHeaderView(entries: PersistenceController.shared.randomEntries(count: 10),
+            SmallRollUpHeaderView(entries: DataController.shared.randomEntries(count: 10),
                                   viewType: .constant(.total))
-            
-            SmallRollUpHeaderView(entries: PersistenceController.shared.randomEntries(count: 10),
+
+            SmallRollUpHeaderView(entries: DataController.shared.randomEntries(count: 10),
                                   viewType: .constant(.percentageShape))
                 .background(.gray)
-            
-            SmallRollUpHeaderView(entries: PersistenceController.shared.randomEntries(count: 10),
+
+            SmallRollUpHeaderView(entries: DataController.shared.randomEntries(count: 10),
                                   viewType: .constant(.percentage))
-                
+
                 .background(.gray)
         }
     }