feat(ui):优化主题应用

@@ -3,7 +3,7 @@
 	archiveVersion = 1;
 	classes = {
 	};
-	objectVersion = 77;
+	objectVersion = 54;
 	objects = {
 
 /* Begin PBXBuildFile section */

@@ -190,8 +190,7 @@ class CustomWatchThemePreviewController extends GetxController {
       WatchThemeSyncDialog(
         themeImageUrl: themeItem.energeticImage,
         onSync: () async {
-          if (device?.isPaired != true ||
-              device?.isWatchAppInstalled != true) {
+          if (device?.isPaired != true || device?.isWatchAppInstalled != true) {
             Get.back();
             await Get.dialog<void>(
               const WatchThemeNoWatchDialog(),
@@ -217,10 +216,20 @@ class CustomWatchThemePreviewController extends GetxController {
 
     isApplying.value = true;
 
+    WatchTransformTheme? downloadedTheme;
+    if (themeItem.isDefaultTheme != 1) {
+      try {
+        downloadedTheme = await _syncPayloadBuilder.build(themeItem);
+      } catch (e) {
+        AppToast.show(l10n.watchThemeImageDownloadFailed(e.toString()));
+        isApplying.value = false;
+        return false;
+      }
+    }
+
     var syncSuccess = true;
     try {
-      final payload = await _syncPayloadBuilder.build(themeItem);
-      final success = await WearEngineHostApi().syncWatchTheme(payload);
+      final success = await WearEngineHostApi().syncWatchTheme(downloadedTheme);
       if (success) {
         final result = await _themeApi.applyTheme(themeId);
         if (result is! AppSuccess<void>) {

@@ -161,8 +161,7 @@ class WatchThemePreviewController extends GetxController {
       WatchThemeSyncDialog(
         themeImageUrl: themeItem.energeticImage,
         onSync: () async {
-          if (device?.isPaired != true ||
-              device?.isWatchAppInstalled != true) {
+          if (device?.isPaired != true || device?.isWatchAppInstalled != true) {
             Get.back();
             await Get.dialog<void>(
               const WatchThemeNoWatchDialog(),
@@ -188,10 +187,20 @@ class WatchThemePreviewController extends GetxController {
 
     isApplying.value = true;
 
+    WatchTransformTheme? downloadedTheme;
+    if (themeItem.isDefaultTheme != 1) {
+      try {
+        downloadedTheme = await _syncPayloadBuilder.build(themeItem);
+      } catch (e) {
+        AppToast.show(l10n.watchThemeImageDownloadFailed(e.toString()));
+        isApplying.value = false;
+        return false;
+      }
+    }
+
     var syncSuccess = true;
     try {
-      final payload = await _syncPayloadBuilder.build(themeItem);
-      final success = await WearEngineHostApi().syncWatchTheme(payload);
+      final success = await WearEngineHostApi().syncWatchTheme(downloadedTheme);
       if (success) {
         final result = await _themeApi.applyTheme(themeId);
         if (result is! AppSuccess<void>) {

 import 'dart:io';
+import 'dart:typed_data';
 
 import 'package:doublefeel_flutter/app/modules/watch_theme/models/watch_theme_models.dart';
 import 'package:doublefeel_flutter/pigeon/wear_engine_api.g.dart';
-import 'package:flutter/foundation.dart';
 import 'package:flutter/services.dart';
 
 class WatchThemeSyncPayloadBuilder {
@@ -46,18 +46,37 @@ class WatchThemeSyncPayloadBuilder {
   }
 
   Future<Uint8List?> _downloadImage(Uri uri) async {
-    final client = HttpClient();
-    try {
-      final request = await client.getUrl(uri);
-      final response = await request.close();
-      if (response.statusCode < 200 || response.statusCode >= 300) {
-        return null;
+    const maxAttempts = 3;
+    for (var attempt = 0; attempt < maxAttempts; attempt += 1) {
+      final client = HttpClient()
+        ..connectionTimeout = const Duration(seconds: 15)
+        ..idleTimeout = const Duration(seconds: 5);
+      try {
+        final request = await client.getUrl(uri);
+        request.headers.set(HttpHeaders.acceptHeader, 'image/*,*/*');
+        request.headers.set(HttpHeaders.connectionHeader, 'close');
+        request.headers.set(
+          HttpHeaders.userAgentHeader,
+          'doublefeel_flutter/watch_theme',
+        );
+        final response = await request.close();
+        if (response.statusCode < 200 || response.statusCode >= 300) {
+          return null;
+        }
+        final builder = BytesBuilder(copy: false);
+        await for (final chunk in response) {
+          builder.add(chunk);
+        }
+        return builder.takeBytes();
+      } catch (_) {
+        if (attempt == maxAttempts - 1) {
+          return null;
+        }
+        await Future<void>.delayed(Duration(milliseconds: 150 * (attempt + 1)));
+      } finally {
+        client.close(force: true);
       }
-      return consolidateHttpClientResponseBytes(response);
-    } catch (_) {
-      return null;
-    } finally {
-      client.close(force: true);
     }
+    return null;
   }
 }

@@ -659,6 +659,15 @@
   "watchThemeAbandonMessage": "Your changes won't be saved if you close this page. Discard them?",
   "watchThemeContinueEditing": "Continue Editing",
   "watchThemeImageUploadFailed": "Image upload failed. Please try again",
+  "watchThemeImageDownloadFailed": "Failed to download theme images: {error}",
+  "@watchThemeImageDownloadFailed": {
+    "description": "Toast shown when watch theme images fail to download",
+    "placeholders": {
+      "error": {
+        "type": "String"
+      }
+    }
+  },
   "watchThemeCreateFailed": "Failed to create watch face. Please try again",
   "watchThemeDeleteTheme": "Delete Theme",
   "watchThemeDeleteMessage": "Deleted themes cannot be restored. Delete this theme?",

@@ -1038,6 +1038,15 @@
   "watchThemeAbandonMessage": "关闭此页面后，已编辑的内容不会保留，是否放弃编辑？",
   "watchThemeContinueEditing": "继续编辑",
   "watchThemeImageUploadFailed": "图片上传失败，请重试",
+  "watchThemeImageDownloadFailed": "主题图片下载失败：{error}",
+  "@watchThemeImageDownloadFailed": {
+    "description": "表盘主题图片下载失败提示",
+    "placeholders": {
+      "error": {
+        "type": "String"
+      }
+    }
+  },
   "watchThemeCreateFailed": "创建表盘失败，请重试",
   "watchThemeDeleteTheme": "删除主题",
   "watchThemeDeleteMessage": "主题删除后无法恢复，确认删除该主题吗？",

@@ -3867,6 +3867,12 @@ abstract class AppLocalizations {
   /// **'图片上传失败，请重试'**
   String get watchThemeImageUploadFailed;
 
+  /// 表盘主题图片下载失败提示
+  ///
+  /// In zh, this message translates to:
+  /// **'主题图片下载失败：{error}'**
+  String watchThemeImageDownloadFailed(String error);
+
   /// No description provided for @watchThemeCreateFailed.
   ///
   /// In zh, this message translates to:

@@ -2169,6 +2169,11 @@ class AppLocalizationsEn extends AppLocalizations {
       'Image upload failed. Please try again';
 
   @override
+  String watchThemeImageDownloadFailed(String error) {
+    return 'Failed to download theme images: $error';
+  }
+
+  @override
   String get watchThemeCreateFailed =>
       'Failed to create watch face. Please try again';
 

@@ -2061,6 +2061,11 @@ class AppLocalizationsZh extends AppLocalizations {
   String get watchThemeImageUploadFailed => '图片上传失败，请重试';
 
   @override
+  String watchThemeImageDownloadFailed(String error) {
+    return '主题图片下载失败：$error';
+  }
+
+  @override
   String get watchThemeCreateFailed => '创建表盘失败，请重试';
 
   @override