chore: release client-v1.1.12

价签标签两栏布局改版 + 生产日期修复 + 模板预览接真实渲染 +
Windows/macOS 应用内更新进度条修复。

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Bupi8Kdqkfx2N5acFsHTx5

client/lib/core/update/app_updater_io.dart

@@ -26,13 +26,22 @@ Future<void> downloadAndInstall(
     String url, void Function(double) onProgress) async {
   final tmp = await getTemporaryDirectory();
   final dio = Dio();
+
+  // 关键：显式拒绝 gzip（Accept-Encoding: identity）。
+  // nginx 会对 application/octet-stream(.exe) 做即时 gzip，压缩响应走 chunked 传输、
+  // 不带 Content-Length，导致 onReceiveProgress 的 total 恒为 -1、进度卡在 0
+  //（macOS 的 .zip 属 application/zip 不被 gzip，故一直正常）。
+  // identity 让服务端回传原始字节 + Content-Length，total 才有效。
+  final dlOpts =
+      Options(headers: {HttpHeaders.acceptEncodingHeader: 'identity'});
+
   void prog(int r, int t) {
-    if (t > 0) onProgress(r / t);
+    if (t > 0) onProgress((r / t).clamp(0.0, 1.0));
   }
 
   if (Platform.isWindows) {
     final exe = '${tmp.path}\\jiu-update-setup.exe';
-    await dio.download(url, exe, onReceiveProgress: prog);
+    await dio.download(url, exe, onReceiveProgress: prog, options: dlOpts);
     // 启动 Inno Setup 安装包后退出本应用，让其覆盖安装。
     await Process.start(exe, const [], mode: ProcessStartMode.detached);
     await Future<void>.delayed(AppConstants.updaterStepDelay);
@@ -41,7 +50,7 @@ Future<void> downloadAndInstall(
 
   if (Platform.isMacOS) {
     final zip = '${tmp.path}/jiu-update.zip';
-    await dio.download(url, zip, onReceiveProgress: prog);
+    await dio.download(url, zip, onReceiveProgress: prog, options: dlOpts);
 
     final extractDir = '${tmp.path}/jiu-update';
     await Process.run('/bin/rm', ['-rf', extractDir]);