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/SharingTemplates/CurrentStreakTemplate.swift

@@ -11,12 +11,12 @@ struct CurrentStreakTemplate: View, SharingTemplate {
     static var description: String {
         "Last 10 Days"
     }
-    
+
     var isPreview: Bool
     var startDate: Date
     var endDate: Date
-    let moodEntries: [MoodEntry]
-    
+    let moodEntries: [MoodEntryModel]
+
     @State var showSharingTemplate = false
     @StateObject private var shareImage = StupidAssShareObservableObject()
 
@@ -32,24 +32,24 @@ struct CurrentStreakTemplate: View, SharingTemplate {
         GridItem(.flexible(minimum: 5, maximum: .infinity), alignment: .center),
         GridItem(.flexible(minimum: 5, maximum: .infinity), alignment: .center)
     ]
-    
+
+    @MainActor
     init(isPreview: Bool, startDate: Date, endDate: Date, fakeData: Bool) {
         self.isPreview = isPreview
         self.startDate = startDate
         self.endDate = endDate
-        
-        var _moodEntries: [MoodEntry]?
-        
+
+        var _moodEntries: [MoodEntryModel]?
+
         if fakeData {
-            _moodEntries = PersistenceController.shared.randomEntries(count: 10)
+            _moodEntries = DataController.shared.randomEntries(count: 10)
         } else {
-            
-            _moodEntries = PersistenceController.shared.getData(startDate:startDate,
-                                                                endDate: endDate,
-                                                                includedDays: [1,2,3,4,5,6,7])
+            _moodEntries = DataController.shared.getData(startDate:startDate,
+                                                         endDate: endDate,
+                                                         includedDays: [1,2,3,4,5,6,7])
         }
-        
-        self.moodEntries = _moodEntries ?? [MoodEntry]()
+
+        self.moodEntries = _moodEntries ?? [MoodEntryModel]()
     }
     
     var image: UIImage {