diff --git a/client/lib/bridge/log.dart b/client/lib/bridge/log.dart
index bb835ca..b38452c 100644
--- a/client/lib/bridge/log.dart
+++ b/client/lib/bridge/log.dart
@@ -2,14 +2,61 @@
 // 格式: `[时:分:秒.毫秒] [tag] msg`,全部走 logLine(),便于排查时序。
 // 注:sing-box 自身时间戳已在下发配置里关闭(log.timestamp=false),
 //     避免与这里的前缀重复打印两个时间。
+//
+// 除 stdout 外,桌面端还把日志落到固定文件(每次启动截断重写),便于在 GUI/管理员
+// 启动、无法用控制台 Tee 抓 stdout 时排障:
+//   Windows: %LOCALAPPDATA%\Pangolin\pangolin.log
+//   macOS/Linux: ~/.pangolin/pangolin.log
 
 // ignore_for_file: avoid_print
 
+import 'dart:io';
+
 String _ts() {
   final n = DateTime.now();
   String p(int v, [int w = 2]) => v.toString().padLeft(w, '0');
   return '${p(n.hour)}:${p(n.minute)}:${p(n.second)}.${p(n.millisecond, 3)}';
 }
 
-/// 打印一行带时间戳与标签的桌面端日志。
-void logLine(String tag, String msg) => print('[${_ts()}] [$tag] $msg');
+File? _logFile;
+bool _logInit = false;
+
+File? _openLogFile() {
+  try {
+    String? base;
+    String sep = '/';
+    String sub = '.pangolin';
+    if (Platform.isWindows) {
+      base = Platform.environment['LOCALAPPDATA'];
+      sep = '\\';
+      sub = 'Pangolin';
+    } else if (Platform.isMacOS || Platform.isLinux) {
+      base = Platform.environment['HOME'];
+    } else {
+      return null; // 移动端不落文件
+    }
+    if (base == null || base.isEmpty) return null;
+    final dir = Directory('$base$sep$sub');
+    if (!dir.existsSync()) dir.createSync(recursive: true);
+    final f = File('${dir.path}${sep}pangolin.log');
+    f.writeAsStringSync('=== session ${DateTime.now()} ===\n'); // 每次启动截断重写
+    return f;
+  } catch (_) {
+    return null;
+  }
+}
+
+/// 打印一行带时间戳与标签的桌面端日志(stdout + 桌面端日志文件)。
+void logLine(String tag, String msg) {
+  final line = '[${_ts()}] [$tag] $msg';
+  print(line);
+  try {
+    if (!_logInit) {
+      _logInit = true;
+      _logFile = _openLogFile();
+    }
+    _logFile?.writeAsStringSync('$line\n', mode: FileMode.append);
+  } catch (_) {
+    // 落盘失败不影响运行。
+  }
+}
diff --git a/client/lib/main.dart b/client/lib/main.dart
index 1121e23..14d4d6c 100644
--- a/client/lib/main.dart
+++ b/client/lib/main.dart
@@ -129,13 +129,14 @@ class _RootFlowState extends ConsumerState<RootFlow> {
     // 注意:不在此处早读 settingsProvider.autoConnect —— 其 _load 是异步(SharedPreferences),
     // 启动这一刻多半还没加载完,会读到默认 false 而永久跳过。改到「节点就绪」回调里再判:
     // 节点要走网络拉取,远慢于本地设置读取,那时 autoConnect 必已加载到位。
-    // 必须标全泛型:裸 ProviderSubscription(=<dynamic>)会让 listenManual 推断成 dynamic,
-    // next 变 dynamic → valueOrNull(扩展 getter)在 dynamic 上不解析 → 运行期 NoSuchMethod。
+    // 不用回调的 next(裸 ProviderSubscription 会让它退化成 dynamic,valueOrNull 这种
+    // 扩展 getter 在 dynamic 上不解析 → 运行期 NoSuchMethod)。直接 ref.read 拿强类型值。
     late final ProviderSubscription<AsyncValue<List<Node>>> sub;
     sub = ref.listenManual(nodesProvider, (prev, next) {
-      final nodes = next.valueOrNull ?? const <Node>[];
+      final av = ref.read(nodesProvider);
+      final nodes = av.valueOrNull ?? const <Node>[];
       final ready = nodes.any((n) => n.uuid.isNotEmpty);
-      logLine('AutoConnect', 'nodes update: total=${nodes.length} ready=$ready loading=${next.isLoading} err=${next.hasError}');
+      logLine('AutoConnect', 'nodes update: total=${nodes.length} ready=$ready loading=${av.isLoading} err=${av.hasError}');
       if (!ready) return;
       sub.close();
       final ac = ref.read(settingsProvider).autoConnect;
diff --git a/client/pubspec.yaml b/client/pubspec.yaml
index 90b2998..6d86c3e 100644
--- a/client/pubspec.yaml
+++ b/client/pubspec.yaml
@@ -1,7 +1,7 @@
 name: pangolin_vpn
 description: 穿山甲 · Pangolin — 极简、稳定、跨平台网络加速客户端。
 publish_to: "none"
-version: 1.0.20+21
+version: 1.0.21+22
 
 environment:
   sdk: ^3.5.0
diff --git a/client/windows/installer/pangolin.iss b/client/windows/installer/pangolin.iss
index 354282c..9bff8b5 100644
--- a/client/windows/installer/pangolin.iss
+++ b/client/windows/installer/pangolin.iss
@@ -3,7 +3,7 @@
 ; 前置: 先在 client/ 跑 `flutter build windows`(Release),产物在
 ;       ..\..\build\windows\x64\runner\Release
 #define MyAppName "穿山甲 Pangolin"
-#define MyAppVersion "1.0.20"
+#define MyAppVersion "1.0.21"
 #define MyAppPublisher "Pangolin"
 #define MyAppExeName "pangolin_vpn.exe"
 #define BuildDir "..\..\build\windows\x64\runner\Release"