Add Lottie-based global loading overlay across key flows.

Introduce GlobalLoadingCenter with reference counting, wire it through RootView and major auth/order/profile screens, and add the loading animation asset plus unit tests.

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

suixinkan/Features/Profile/Views/RealNameAuthView.swift

@@ -15,6 +15,7 @@ struct RealNameAuthView: View {
     @Environment(ProfileAPI.self) private var profileAPI
     @Environment(OSSUploadService.self) private var ossUploadService
     @Environment(ToastCenter.self) private var toastCenter
+    @Environment(\.globalLoading) private var globalLoading
     @State private var viewModel = RealNameAuthViewModel()
     @State private var pickedFrontItem: PhotosPickerItem?
     @State private var pickedBackItem: PhotosPickerItem?
@@ -37,14 +38,6 @@ struct RealNameAuthView: View {
         .task {
             await loadInfo()
         }
-        .overlay {
-            if viewModel.loading && viewModel.info == nil {
-                ProgressView()
-                    .controlSize(.large)
-                    .frame(maxWidth: .infinity, maxHeight: .infinity)
-                    .background(Color.white.opacity(0.35))
-            }
-        }
         .onChange(of: pickedFrontItem) { _, item in
             Task { await prepareIdentityImage(from: item, side: .front) }
         }
@@ -380,7 +373,9 @@ struct RealNameAuthView: View {
     /// 拉取实名认证信息。
     private func loadInfo() async {
         do {
-            try await viewModel.load(api: profileAPI)
+            try await globalLoading.withOptionalLoading(viewModel.info == nil, message: "加载中...") {
+                try await viewModel.load(api: profileAPI)
+            }
         } catch is CancellationError {
             return
         } catch {
@@ -400,11 +395,13 @@ struct RealNameAuthView: View {
     /// 提交实名资料。
     private func submit() async {
         do {
-            try await viewModel.submit(
-                api: profileAPI,
-                uploader: ossUploadService,
-                scenicId: accountContext.currentScenic?.id ?? 0
-            )
+            try await globalLoading.withLoading(message: "提交中...") {
+                try await viewModel.submit(
+                    api: profileAPI,
+                    uploader: ossUploadService,
+                    scenicId: accountContext.currentScenic?.id ?? 0
+                )
+            }
         } catch {
             viewModel.statusMessage = error.localizedDescription
             toastCenter.show(error.localizedDescription)