Add Assets module with cloud storage and media library flows.

Wire home routing for cloud and material management pages, move shared cloud models into Assets, and add API/view model tests.

Co-authored-by: Cursor <cursoragent@cursor.com>

suixinkan/Features/Home/Views/HomeSupportViews.swift

@@ -36,6 +36,14 @@ extension HomeRoute {
             TaskCreateView()
         case .taskDetail(let id, let summary):
             TaskDetailView(taskId: id, summary: summary)
+        case .cloudStorage:
+            CloudStorageView()
+        case .cloudStorageTransit:
+            CloudStorageTransitView()
+        case .materialLibrary:
+            MediaLibraryView()
+        case .materialUpload:
+            MediaLibraryUploadView()
         case let .modulePlaceholder(uri, title):
             HomeMigrationModuleView(title: title, uri: uri)
         }