结构大修改，改成朴实无华的结构，不过度架构。能跑就行

Assets/Scripts/NBC/Asset/Runtime/Tasks/Initialization/OfflineInitializationTask.cs

@@ -0,0 +1,25 @@
+namespace NBC.Asset
+{
+    /// <summary>
+    /// 离线模式初始化任务
+    /// </summary>
+    internal sealed class OfflineInitializationTask : InitializationTask
+    {
+        public override float Progress => _taskList.Progress;
+        private readonly SequenceTaskCollection _taskList = new SequenceTaskCollection();
+
+        protected override void OnStart()
+        {
+            _taskList.AddTask(new CheckCoverInstallTask());
+            _taskList.AddTask(new UnpackVersionTask());
+            _taskList.AddTask(new CheckUnpackPackageTask());
+            _taskList.AddTask(new RunFunctionTask(Addressable.Load));
+            _taskList.Run(TaskRunner.Def);
+        }
+
+        protected override NTaskStatus OnProcess()
+        {
+            return _taskList.IsDone ? _taskList.Status : NTaskStatus.Running;
+        }
+    }
+}