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>

suixinkan/UI/Home/HomeViewController.swift

@@ -185,8 +185,8 @@ final class HomeViewController: BaseViewController {
                     )
                 }
                 cell.cardView.onSubmitTask = { [weak self] in
-                    self?.showToast("功能开发中")
-                }
+            self?.navigationController?.pushViewController(TaskAddViewController(), animated: true)
+        }
                 cell.cardView.onToggleOnline = { [weak self] in
                     self?.viewModel.showOnlineStatusSwitchDialog()
                 }