feat(登录): 为iOS设备生成更可靠的设备指纹

使用设备的machine和systemVersion信息生成MD5哈希作为设备指纹，提高设备识别的可靠性。当生成失败时回退到原生的identifierForVendor

lib/modules/login/controllers/login_controller.dart

@@ -7,6 +7,7 @@ import 'package:flutter/foundation.dart';
 import 'package:logger/web.dart';
 import 'package:get_storage/get_storage.dart';
 import 'package:device_info_plus/device_info_plus.dart';
+import 'package:crypto/crypto.dart'; // 用于生成设备指纹
 import 'dart:convert';
 import '../../../data/services/db/sqflite_api.dart';
 import 'facebookLogin.dart';
@@ -182,10 +183,26 @@ class LoginController extends GetxController {
       } else if (GetPlatform.isIOS) {
         IosDeviceInfo iosInfo = await deviceInfo.iosInfo;
         //print('lxm---iosInfo: $iosInfo.toString()');
+        final utsname = iosInfo.utsname; // 包含更详细的设备信息
+        //print('lxm---utsname: $utsname');
+        final machineId = utsname.machine.toLowerCase(); // 例如: "iPhone14,2"
+        Logger().d('lxm---machineId: $machineId');
+        final systemVersion = utsname.release; // 例如: "16.4.1"
+        Logger().d('lxm---systemVersion: $systemVersion');
 
-        _deviceId = iosInfo.identifierForVendor ?? 'unknown';
+        try {
+          // 组合 machine 和 systemVersion 生成指纹
+          final fingerprint = '$machineId|$systemVersion';
+          final hashedFingerprint =
+              md5.convert(utf8.encode(fingerprint)).toString();
+          Logger()
+              .d('生成设备指纹: $hashedFingerprint (基于 $machineId 和 $systemVersion)');
+          _deviceId = hashedFingerprint;
+        } catch (e) {
+          Logger().e('生成设备指纹失败: $e');
+          _deviceId = iosInfo.identifierForVendor ?? 'unknown';
+        }
       }
-      Logger().d('lxm--deviceId: $_deviceId');
     } catch (e) {
       Logger().e('获取设备信息失败: $e');
       _deviceId = 'unknown';