add native examples

todo-swiftui/TodoSwiftUI/Models/Todo.swift

@@ -0,0 +1,69 @@
+import Foundation
+
+// MARK: - Priority
+
+enum Priority: String, CaseIterable, Identifiable {
+    case low
+    case medium
+    case high
+
+    var id: String { rawValue }
+
+    var displayName: String {
+        switch self {
+        case .low: return "Low"
+        case .medium: return "Medium"
+        case .high: return "High"
+        }
+    }
+
+    var colorHex: UInt {
+        switch self {
+        case .low: return 0x4CAF50     // green
+        case .medium: return 0xFF9800  // orange
+        case .high: return 0xF44336    // red
+        }
+    }
+}
+
+// MARK: - TodoFilter
+
+enum TodoFilter: String, CaseIterable, Identifiable {
+    case all
+    case active
+    case done
+
+    var id: String { rawValue }
+
+    var displayName: String {
+        switch self {
+        case .all: return "All"
+        case .active: return "Active"
+        case .done: return "Done"
+        }
+    }
+}
+
+// MARK: - Categories
+
+let todoCategories: [String] = ["Personal", "Work", "Shopping", "Health", "Learning"]
+
+// MARK: - Todo
+
+struct Todo: Identifiable, Equatable {
+    let id: Int64
+    var title: String
+    var completed: Bool
+    var category: String
+    var priority: Priority
+    var createdAt: Int64
+
+    static func == (lhs: Todo, rhs: Todo) -> Bool {
+        lhs.id == rhs.id
+            && lhs.title == rhs.title
+            && lhs.completed == rhs.completed
+            && lhs.category == rhs.category
+            && lhs.priority == rhs.priority
+            && lhs.createdAt == rhs.createdAt
+    }
+}