fix：参考金值，研听，研值工程通用通用工程公共能力，重点对比网络请求、登录认证、状态管理、本地存储、WebView、推送、版本更新、一键登录、主题/UI 等模块，确定后续统一整改方案

lib/common/network/protobuf_wire_reader.dart

@@ -0,0 +1,58 @@
+import 'dart:convert';
+
+/// Minimal reader retained only for endpoints that do not have an
+/// authoritative generated protobuf model yet.
+class ProtobufWireMessage {
+  ProtobufWireMessage(this.bytes);
+
+  final List<int> bytes;
+  Map<int, List<Object>>? _cache;
+
+  Map<int, List<Object>> get _fields => _cache ??= _read();
+  int integer(int tag) => (_fields[tag]?.lastOrNull as int?) ?? 0;
+
+  String string(int tag) {
+    final value = _fields[tag]?.lastOrNull;
+    return value is List<int> ? utf8.decode(value, allowMalformed: true) : '';
+  }
+
+  Map<int, List<Object>> _read() {
+    final result = <int, List<Object>>{};
+    var index = 0;
+
+    int varint() {
+      var value = 0;
+      var shift = 0;
+      while (index < bytes.length) {
+        final byte = bytes[index++];
+        value |= (byte & 127) << shift;
+        if (byte < 128) return value;
+        shift += 7;
+      }
+      throw const FormatException('Invalid protobuf');
+    }
+
+    while (index < bytes.length) {
+      final key = varint();
+      final tag = key >> 3;
+      final Object field;
+      if ((key & 7) == 0) {
+        field = varint();
+      } else if ((key & 7) == 2) {
+        final length = varint();
+        final end = index + length;
+        if (end > bytes.length) throw const FormatException('Invalid protobuf');
+        field = bytes.sublist(index, end);
+        index = end;
+      } else {
+        throw const FormatException('Unsupported protobuf');
+      }
+      (result[tag] ??= []).add(field);
+    }
+    return result;
+  }
+}
+
+extension on List<Object> {
+  Object? get lastOrNull => isEmpty ? null : last;
+}