Save automatically, improve mocks

CHDataManagement/Model/Loading/LoadingContext.swift

@@ -29,7 +29,7 @@ final class LoadingContext {
             tags: tags.values.sorted(),
             files: files.values.sorted { $0.id },
             tagOverview: tagOverview,
-            errors: errors.sorted())
+            errors: errors.sorted().map { StorageError(message: $0) })
     }
 
     func error(_ message: String) {

CHDataManagement/Model/Loading/LoadingResult.swift

@@ -13,5 +13,5 @@ struct LoadingResult {
 
     let tagOverview: Tag?
 
-    let errors: [String]
+    let errors: [StorageError]
 }

CHDataManagement/Model/Loading/ModelLoader.swift

@@ -1,17 +1,4 @@
 
-final class LoadingErrorHandler: SecurityBookmarkErrorDelegate {
-
-    let context: LoadingContext
-
-    init(context: LoadingContext) {
-        self.context = context
-    }
-
-    func securityBookmark(error: String) {
-        context.error("\(error)")
-    }
-}
-
 final class ModelLoader {
 
     let content: Content
@@ -20,14 +7,10 @@ final class ModelLoader {
 
     let context: LoadingContext
 
-    let errorHandler: LoadingErrorHandler
-
     init(content: Content, storage: Storage) {
         self.content = content
         self.storage = storage
         self.context = .init(content: content)
-        self.errorHandler = .init(context: context)
-        storage.contentScope?.delegate = errorHandler
     }
 
     func load() -> LoadingResult {