refactor(translation): 优化翻译服务初始化和UI组件

改进火山翻译服务初始化逻辑，优先使用AppConfig配置并添加错误日志
调整翻译页面UI组件样式和布局，包括返回按钮图标和语言选择器

lib/data/services/volcano_translation_service.dart

@@ -9,6 +9,7 @@ import 'package:get/get.dart';
 import '../../core/utils/logger.dart';
 import 'language_manager.dart';
 
+//// 火山引擎机器翻译服务
 class VolcanoTranslationService extends GetxService {
   // API 配置
   late String _baseUrl;
@@ -28,29 +29,44 @@ class VolcanoTranslationService extends GetxService {
   VolcanoTranslationService();
 
   // 初始化服务
-  Future<bool> initialize({
+  Future<bool> initialize() async {
-    String? accessKey,
-    String? secretKey,
-    String? region,
-  }) async {
     try {
-      // final _env = _storage.read("ENV") as Map<String, String>;
+      // 优先使用后端 AppConfig，其次回退到 .env
-      _accessKey =
+      final bool appConfigReady = AppConfig.isInitialized();
-          accessKey ?? AppConfig.env('VOLCANO_TRANSLATION_ACCESS_KEY') ?? '';
+
-      _secretKey =
+      final accessKeyFromConfig = appConfigReady
-          secretKey ?? AppConfig.env('VOLCANO_TRANSLATION_SECRET_KEY') ?? '';
+          ? AppConfig.env('VOLCANO_TRANSLATION_ACCESS_KEY')
-      _region =
+          : null;
-          region ?? AppConfig.env('VOLCANO_TRANSLATION_REGION') ?? 'cn-north-1';
+      final secretKeyFromConfig = appConfigReady
+          ? AppConfig.env('VOLCANO_TRANSLATION_SECRET_KEY')
+          : null;
+      final regionFromConfig =
+          appConfigReady ? AppConfig.env('VOLCANO_TRANSLATION_REGION') : null;
+
+      _accessKey = accessKeyFromConfig ??
+          dotenv.env['VOLCANO_TRANSLATION_ACCESS_KEY'] ??
+          '';
+      _secretKey = secretKeyFromConfig ??
+          dotenv.env['VOLCANO_TRANSLATION_SECRET_KEY'] ??
+          '';
+      _region = regionFromConfig ??
+          dotenv.env['VOLCANO_TRANSLATION_REGION'] ??
+          'cn-north-1';
+
       _service = 'translate';
       _baseUrl = 'https://translate.volcengineapi.com';
 
       if (_accessKey.isEmpty || _secretKey.isEmpty) {
+        Logger.error(
+            'lxm---Volcano Translation Service initialized失败，accessKey或secretKey为空');
         return false;
       }
 
       _isInitialized = true;
+      Logger.info('lxm---Volcano Translation Service initialized成功');
       return true;
     } catch (e) {
+      Logger.error('lxm---Volcano Translation Service initialized失败，$e');
       return false;
     }
   }
@@ -142,6 +158,7 @@ class VolcanoTranslationService extends GetxService {
     required String targetLanguageCode,
   }) async {
     if (!_isInitialized) {
+      Logger.error('翻译服务未初始化');
       return null;
     }
 
@@ -246,8 +263,11 @@ class VolcanoTranslationService extends GetxService {
         return translation;
       }
 
+      Logger.error(
+          '翻译HTTP错误: status=${response.statusCode}, body=${response.body}');
       return null;
     } catch (e) {
+      Logger.error('翻译请求异常: $e');
       return null;
     }
   }

lib/modules/text_translation/views/text_translation_view.dart

@@ -24,15 +24,15 @@ class TextTranslationView extends GetView<TextTranslationController> {
               // 语言选择区域
               _buildLanguageSelector(isDarkMode),
               SizedBox(height: 20.h),
-              
+
               // 输入区域
               _buildInputSection(isDarkMode),
               SizedBox(height: 20.h),
-              
+
               // 翻译按钮
               _buildTranslateButton(isDarkMode),
               SizedBox(height: 20.h),
-              
+
               // 翻译结果区域
               _buildResultSection(isDarkMode),
             ],
@@ -49,8 +49,9 @@ class TextTranslationView extends GetView<TextTranslationController> {
       elevation: 0,
       leading: IconButton(
         icon: Icon(
-          Icons.arrow_back,
+          Icons.arrow_back_ios,
           color: isDarkMode ? Colors.white : Colors.black,
+          size: 20.sp,
         ),
         onPressed: () => Get.back(),
       ),
@@ -94,14 +95,15 @@ class TextTranslationView extends GetView<TextTranslationController> {
         children: [
           // 源语言选择
           Obx(() => _buildLanguageButton(
-            label: 'sourceLanguage'.tr,
+                label: 'sourceLanguage'.tr,
-            selectedLanguage: controller.sourceLanguageChineseName.value,
+                selectedLanguage: controller.sourceLanguageChineseName.value,
-            onTap: () => controller.showLanguageSelector(isSourceLanguage: true),
+                onTap: () =>
-            isDarkMode: isDarkMode,
+                    controller.showLanguageSelector(isSourceLanguage: true),
-          )),
+                isDarkMode: isDarkMode,
-          
+              )),
+
           SizedBox(height: 12.h),
-          
+
           // 交换语言按钮
           Center(
             child: GestureDetector(
@@ -121,16 +123,17 @@ class TextTranslationView extends GetView<TextTranslationController> {
               ),
             ),
           ),
-          
+
           SizedBox(height: 12.h),
-          
+
           // 目标语言选择
           Obx(() => _buildLanguageButton(
-            label: 'targetLanguage'.tr,
+                label: 'targetLanguage'.tr,
-            selectedLanguage: controller.targetLanguageChineseName.value,
+                selectedLanguage: controller.targetLanguageChineseName.value,
-            onTap: () => controller.showLanguageSelector(isSourceLanguage: false),
+                onTap: () =>
-            isDarkMode: isDarkMode,
+                    controller.showLanguageSelector(isSourceLanguage: false),
-          )),
+                isDarkMode: isDarkMode,
+              )),
         ],
       ),
     );
@@ -255,50 +258,53 @@ class TextTranslationView extends GetView<TextTranslationController> {
   /// 构建翻译按钮
   Widget _buildTranslateButton(bool isDarkMode) {
     return Obx(() => SizedBox(
-      width: double.infinity,
+          width: double.infinity,
-      child: ElevatedButton(
+          child: ElevatedButton(
-        onPressed: controller.isTranslating.value ? null : controller.translateText,
+            onPressed: controller.isTranslating.value
-        style: ElevatedButton.styleFrom(
+                ? null
-          backgroundColor: Colors.blue,
+                : controller.translateText,
-          foregroundColor: Colors.white,
+            style: ElevatedButton.styleFrom(
-          padding: EdgeInsets.symmetric(vertical: 16.h),
+              backgroundColor: Colors.blue,
-          shape: RoundedRectangleBorder(
+              foregroundColor: Colors.white,
-            borderRadius: BorderRadius.circular(12.r),
+              padding: EdgeInsets.symmetric(vertical: 16.h),
-          ),
+              shape: RoundedRectangleBorder(
-          elevation: 0,
+                borderRadius: BorderRadius.circular(12.r),
-          disabledBackgroundColor: Colors.grey,
+              ),
-        ),
+              elevation: 0,
-        child: controller.isTranslating.value
+              disabledBackgroundColor: Colors.grey,
-            ? Row(
+            ),
-                mainAxisAlignment: MainAxisAlignment.center,
+            child: controller.isTranslating.value
-                children: [
+                ? Row(
-                  SizedBox(
+                    mainAxisAlignment: MainAxisAlignment.center,
-                    width: 20.w,
+                    children: [
-                    height: 20.w,
+                      SizedBox(
-                    child: const CircularProgressIndicator(
+                        width: 20.w,
-                      strokeWidth: 2,
+                        height: 20.w,
-                      valueColor: AlwaysStoppedAnimation<Color>(Colors.white),
+                        child: const CircularProgressIndicator(
-                    ),
+                          strokeWidth: 2,
-                  ),
+                          valueColor:
-                  SizedBox(width: 12.w),
+                              AlwaysStoppedAnimation<Color>(Colors.white),
-                  Text(
+                        ),
-                    'translating'.tr,
+                      ),
+                      SizedBox(width: 12.w),
+                      Text(
+                        'translating'.tr,
+                        style: TextStyle(
+                          fontSize: 16.sp,
+                          fontWeight: FontWeight.w600,
+                        ),
+                      ),
+                    ],
+                  )
+                : Text(
+                    'translate'.tr,
                     style: TextStyle(
                       fontSize: 16.sp,
                       fontWeight: FontWeight.w600,
                     ),
                   ),
-                ],
+          ),
-              )
+        ));
-            : Text(
-                'translate'.tr,
-                style: TextStyle(
-                  fontSize: 16.sp,
-                  fontWeight: FontWeight.w600,
-                ),
-              ),
-      ),
-    ));
   }
 
   /// 构建翻译结果区域
@@ -339,7 +345,8 @@ class TextTranslationView extends GetView<TextTranslationController> {
                 GestureDetector(
                   onTap: controller.copyResult,
                   child: Container(
-                    padding: EdgeInsets.symmetric(horizontal: 12.w, vertical: 6.h),
+                    padding:
+                        EdgeInsets.symmetric(horizontal: 12.w, vertical: 6.h),
                     decoration: BoxDecoration(
                       color: Colors.blue.withOpacity(0.1),
                       borderRadius: BorderRadius.circular(6.r),