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/Models/HomeMenuItem.swift

@@ -32,6 +32,10 @@ enum HomeRoute: Hashable {
     case taskManagement
     case taskCreate
     case taskDetail(id: Int, summary: PhotographerTaskItem?)
+    case cloudStorage
+    case cloudStorageTransit
+    case materialLibrary
+    case materialUpload
     case modulePlaceholder(uri: String, title: String)
 }