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/YearView/YearViewModel.swift

@@ -7,41 +7,42 @@
 
 import Foundation
 
-class YearViewModel: ObservableObject {    
+@MainActor
+class YearViewModel: ObservableObject {
     @Published public var entryStartDate: Date = Date()
     @Published public var entryEndDate: Date = Date()
     @Published var selectedDays = [Int]()
-    
+
     // year, month, items
     @Published public private(set) var data = [Int: [Int: [DayChartView]]]()
     @Published public private(set) var numberOfRatings: Int = 0
-    public private(set) var uncategorizedData = [MoodEntry]() {
+    public private(set) var uncategorizedData = [MoodEntryModel]() {
         didSet {
             self.numberOfRatings = uncategorizedData.count
         }
     }
-    
+
     init() {
         updateData()
     }
-    
+
     private func updateData() {
-        let filteredEntries = PersistenceController.shared.getData(startDate: Date(timeIntervalSince1970: 0),
-                                                                   endDate: Date(),
-                                                                   includedDays: selectedDays)
-        
-        if let fuckingDAte = filteredEntries.sorted(by: { $0.forDate! < $1.forDate! }).first?.forDate {
-            self.entryStartDate = fuckingDAte
+        let filteredEntries = DataController.shared.getData(startDate: Date(timeIntervalSince1970: 0),
+                                                            endDate: Date(),
+                                                            includedDays: selectedDays)
+
+        if let firstDate = filteredEntries.sorted(by: { $0.forDate < $1.forDate }).first?.forDate {
+            self.entryStartDate = firstDate
         }
         self.entryEndDate = Date()
     }
-    
+
     private let chartViewBuilder = DayChartViewChartBuilder()
-    
+
     public func filterEntries(startDate: Date, endDate: Date) {
-        let filteredEntries = PersistenceController.shared.getData(startDate: startDate,
-                                                                   endDate: endDate,
-                                                                   includedDays: selectedDays)
+        let filteredEntries = DataController.shared.getData(startDate: startDate,
+                                                            endDate: endDate,
+                                                            includedDays: selectedDays)
         data.removeAll()
         let filledOutData = chartViewBuilder.buildGridData(withData: filteredEntries)
         data = filledOutData