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/ProfileViewModelTests.swift

@@ -44,9 +44,17 @@ final class ProfileViewModelTests: XCTestCase {
         }
     }
 
-    func testBeginEditingPrefillsNickname() {
+    func testApplyLocalProfileUpdateSyncsNicknameAndAvatar() {
+        AppStore.shared.userName = "全局昵称"
+        AppStore.shared.avatar = "https://cdn.example.com/new.jpg"
+
         let viewModel = ProfileViewModel()
-        viewModel.beginEditing()
-        XCTAssertTrue(viewModel.isEditingProfile)
+        viewModel.applyLocalProfileUpdate()
+
+        XCTAssertEqual(viewModel.displayNickname, "全局昵称")
+        XCTAssertEqual(viewModel.displayAvatarURL, "https://cdn.example.com/new.jpg")
+
+        AppStore.shared.userName = ""
+        AppStore.shared.avatar = ""
     }
 }