Fix model, delete if necessary

Sesame/Common/Extensions/App+Extensions.swift

@@ -0,0 +1,37 @@
+import SwiftUI
+import SwiftData
+
+extension App {
+    
+    static func loadModelContainer() -> ModelContainer {
+        do {
+            return try ModelContainer(for: HistoryItem.self)
+        } catch {
+            print("[WARNING] Removing default SwiftData storage")
+            removeDefaultModelContainer()
+        }
+        // Try again to load an empty container
+        do {
+            return try ModelContainer(for: HistoryItem.self)
+        } catch {
+            fatalError("Failed to create empty model container: \(error)")
+        }
+    }
+    
+    private static func removeDefaultModelContainer() {
+        guard let appSupportDir = FileManager.default.urls(for: .applicationSupportDirectory, in: .userDomainMask).last else {
+            fatalError("Failed to get application support directory")
+        }
+        do {
+            try FileManager.default.contentsOfDirectory(at: appSupportDir, includingPropertiesForKeys: nil)
+                .filter { $0.lastPathComponent.hasPrefix("default") }
+                .forEach {
+                try FileManager.default.removeItem(at: $0)
+            }
+        } catch {
+            print(error)
+            fatalError("Failed to remove default SwiftData database files")
+        }
+    }
+    
+}