Add submit-task flow aligned with Android and extract profile edit page.

Implement task creation with cloud/local media, order linking, and OSS upload; wire home entry and move profile nickname/avatar editing to ProfileEditViewController.

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

suixinkanTests/CloudStoragePickForTaskViewModelTests.swift

@@ -0,0 +1,108 @@
+//
+//  CloudStoragePickForTaskViewModelTests.swift
+//  suixinkanTests
+//
+
+import XCTest
+@testable import suixinkan
+
+@MainActor
+/// 任务云盘多选 ViewModel 测试。
+final class CloudStoragePickForTaskViewModelTests: XCTestCase {
+
+    func testHandleItemTapTogglesMediaSelection() async throws {
+        let listJSON = try makeListJSON(files: [
+            makeFileJSON(id: 5, name: "图片", type: 2),
+        ])
+        let api = makeAPI(responses: [listJSON, listJSON])
+        let viewModel = CloudStoragePickForTaskViewModel()
+        await viewModel.refresh(api: api)
+        let file = try XCTUnwrap(viewModel.files.first)
+
+        await viewModel.handleItemTap(file, api: api)
+        XCTAssertTrue(viewModel.isSelected(5))
+
+        await viewModel.handleItemTap(file, api: api)
+        XCTAssertFalse(viewModel.isSelected(5))
+    }
+
+    func testHandleItemTapShowsImportedMessage() async throws {
+        let listJSON = try makeListJSON(files: [
+            makeFileJSON(id: 5, name: "图片", type: 2),
+        ])
+        let api = makeAPI(responses: [listJSON])
+        let viewModel = CloudStoragePickForTaskViewModel(importedFileIDs: [5])
+        var message: String?
+        viewModel.onShowMessage = { message = $0 }
+        await viewModel.refresh(api: api)
+        let file = try XCTUnwrap(viewModel.files.first)
+
+        await viewModel.handleItemTap(file, api: api)
+
+        XCTAssertEqual(message, "已选择")
+        XCTAssertFalse(viewModel.isSelected(5))
+    }
+
+    func testNavigateToFolderUpdatesPathStack() async throws {
+        let rootJSON = try makeListJSON(files: [
+            makeFileJSON(id: 8, name: "文件夹", type: 99),
+        ])
+        let childJSON = try makeListJSON(files: [])
+        let api = makeAPI(responses: [rootJSON, childJSON])
+        let viewModel = CloudStoragePickForTaskViewModel()
+        await viewModel.refresh(api: api)
+        let folder = try XCTUnwrap(viewModel.files.first)
+
+        await viewModel.handleItemTap(folder, api: api)
+
+        XCTAssertEqual(viewModel.pathStack.map(\.id), [0, 8])
+    }
+
+    func testSelectedFileListReturnsAllChosenFiles() async throws {
+        let listJSON = try makeListJSON(files: [
+            makeFileJSON(id: 1, name: "A", type: 2),
+            makeFileJSON(id: 2, name: "B", type: 2),
+        ])
+        let api = makeAPI(responses: [listJSON, listJSON, listJSON])
+        let viewModel = CloudStoragePickForTaskViewModel()
+        await viewModel.refresh(api: api)
+
+        await viewModel.handleItemTap(viewModel.files[0], api: api)
+        await viewModel.handleItemTap(viewModel.files[1], api: api)
+
+        XCTAssertEqual(Set(viewModel.selectedFileList.map(\.id)), Set([1, 2]))
+    }
+
+    private func makeAPI(responses: [Data]) -> TaskAPI {
+        TaskAPI(client: APIClient(environment: .testing, session: MockURLSession(responses: responses)))
+    }
+
+    private func makeListJSON(files: [[String: Any]]) throws -> Data {
+        let listData = try JSONSerialization.data(withJSONObject: files)
+        let listObject = try JSONSerialization.jsonObject(with: listData)
+        let envelope: [String: Any] = [
+            "code": 100000,
+            "msg": "success",
+            "data": [
+                "total": files.count,
+                "list": listObject,
+            ],
+        ]
+        return try JSONSerialization.data(withJSONObject: envelope)
+    }
+
+    private func makeFileJSON(id: Int, name: String, type: Int) -> [String: Any] {
+        [
+            "id": id,
+            "parent_folder_id": 0,
+            "file_url": "https://cdn/\(id).jpg",
+            "cover_url": "",
+            "updated_at": "",
+            "name": name,
+            "created_at": "",
+            "child_num": 0,
+            "type": type,
+            "file_size": 100,
+        ]
+    }
+}