diff --git a/android/app/src/main/res/mipmap-hdpi/ic_launcher.png b/android/app/src/main/res/mipmap-hdpi/ic_launcher.png
index 7c4a4e8..6744150 100644
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diff --git a/android/app/src/main/res/mipmap-hdpi/ic_launcher2.png b/android/app/src/main/res/mipmap-hdpi/ic_launcher2.png
index f833d7f..b35e580 100644
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diff --git a/android/app/src/main/res/mipmap-mdpi/ic_launcher.png b/android/app/src/main/res/mipmap-mdpi/ic_launcher.png
index bbfcfa2..f717c27 100644
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diff --git a/android/app/src/main/res/mipmap-mdpi/ic_launcher2.png b/android/app/src/main/res/mipmap-mdpi/ic_launcher2.png
index 270b6cb..c31590c 100644
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diff --git a/android/app/src/main/res/mipmap-xhdpi/ic_launcher.png b/android/app/src/main/res/mipmap-xhdpi/ic_launcher.png
index 9de0224..b288e2d 100644
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diff --git a/android/app/src/main/res/mipmap-xhdpi/ic_launcher2.png b/android/app/src/main/res/mipmap-xhdpi/ic_launcher2.png
index 2ffd647..37e8815 100644
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diff --git a/android/app/src/main/res/mipmap-xxhdpi/ic_launcher.png b/android/app/src/main/res/mipmap-xxhdpi/ic_launcher.png
index d18b10f..bf3f81a 100644
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diff --git a/android/app/src/main/res/mipmap-xxhdpi/ic_launcher2.png b/android/app/src/main/res/mipmap-xxhdpi/ic_launcher2.png
index dcecf72..ed9bccb 100644
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diff --git a/android/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png b/android/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png
index 390a843..db0c418 100644
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diff --git a/android/app/src/main/res/mipmap-xxxhdpi/ic_launcher2.png b/android/app/src/main/res/mipmap-xxxhdpi/ic_launcher2.png
index 937d7d0..b372304 100644
Binary files a/android/app/src/main/res/mipmap-xxxhdpi/ic_launcher2.png and b/android/app/src/main/res/mipmap-xxxhdpi/ic_launcher2.png differ
diff --git a/assets/icon/app_icon.png b/assets/icon/app_icon.png
index 797e9d9..72fc5bc 100644
Binary files a/assets/icon/app_icon.png and b/assets/icon/app_icon.png differ
diff --git a/assets/icon/app_icon2.png b/assets/icon/app_icon2.png
index 9637dd5..e23ba03 100644
Binary files a/assets/icon/app_icon2.png and b/assets/icon/app_icon2.png differ
diff --git a/lib/pages/profile_page.dart b/lib/pages/profile_page.dart
index df6233d..c206ed6 100644
--- a/lib/pages/profile_page.dart
+++ b/lib/pages/profile_page.dart
@@ -993,6 +993,18 @@ class _SettingsPageState extends State<SettingsPage> {
             onTap: () =>
                 launchUrl(Uri.parse('https://mooknote.iletter.top/#/')),
           ),
+          Divider(
+              height: 0.5,
+              indent: 24,
+              endIndent: 24,
+              color: colors.outlineVariant),
+          _buildActionItem(
+            icon: Icons.open_in_new_outlined,
+            title: '项目源码',
+            subtitle: '查看 GitHub 项目仓库',
+            onTap: () =>
+                launchUrl(Uri.parse('https://github.com/dellevin/mooknote')),
+          ),
           Divider(
               height: 0.5,
               indent: 24,
diff --git a/lib/utils/sync/backup_service.dart b/lib/utils/sync/backup_service.dart
index 8ce1559..3af6fd7 100644
--- a/lib/utils/sync/backup_service.dart
+++ b/lib/utils/sync/backup_service.dart
@@ -7,6 +7,7 @@ import 'package:flutter/foundation.dart';
 import 'package:path_provider/path_provider.dart';
 import 'package:path/path.dart' as path;
 import 'package:share_plus/share_plus.dart';
+import 'package:shared_preferences/shared_preferences.dart';
 import 'package:sqflite/sqflite.dart';
 import '../database_helper.dart';
 import '../user_prefs.dart';
@@ -75,6 +76,7 @@ class BackupService {
       'appName': 'MookNote',
       'hasImages': true,
       'userInfo': userInfo,
+      'sharedPrefs': await _exportSharedPrefs(),
       'data': {
         'movies': movies,
         'books': books,
@@ -455,6 +457,44 @@ class BackupService {
         }
       }
     }
+
+    // 恢复完整 SharedPreferences
+    if (backupData.containsKey('sharedPrefs')) {
+      await _restoreSharedPrefs(backupData['sharedPrefs'] as Map<String, dynamic>);
+    }
+  }
+
+  /// 导出完整 SharedPreferences
+  Future<Map<String, dynamic>> _exportSharedPrefs() async {
+    final prefs = await SharedPreferences.getInstance();
+    final keys = prefs.getKeys();
+    final map = <String, dynamic>{};
+    for (final key in keys) {
+      map[key] = prefs.get(key);
+    }
+    return map;
+  }
+
+  /// 恢复 SharedPreferences（保留当前 avatarPath，因为已在上面用 imagePathMap 更新过）
+  Future<void> _restoreSharedPrefs(Map<String, dynamic> data) async {
+    final prefs = await SharedPreferences.getInstance();
+    for (final entry in data.entries) {
+      final key = entry.key;
+      final value = entry.value;
+      // avatarPath 已单独处理，跳过
+      if (key == 'avatarPath') continue;
+      if (value is String) {
+        await prefs.setString(key, value);
+      } else if (value is int) {
+        await prefs.setInt(key, value);
+      } else if (value is double) {
+        await prefs.setDouble(key, value);
+      } else if (value is bool) {
+        await prefs.setBool(key, value);
+      } else if (value is List) {
+        await prefs.setStringList(key, value.cast<String>());
+      }
+    }
   }
 
   Map<String, int> _buildStats(Map<String, dynamic> data, int imageCount) {
diff --git a/lib/utils/sync/webdav_service.dart b/lib/utils/sync/webdav_service.dart
index 0cf3e58..50dfe0f 100644
--- a/lib/utils/sync/webdav_service.dart
+++ b/lib/utils/sync/webdav_service.dart
@@ -1,7 +1,7 @@
 import 'dart:async';
 import 'dart:convert';
 import 'dart:io';
-import 'dart:typed_data';
+import 'package:flutter/foundation.dart';
 import 'package:http/http.dart' as http;
 import 'package:path_provider/path_provider.dart';
 import 'package:shared_preferences/shared_preferences.dart';
@@ -227,7 +227,7 @@ class WebDAVService {
           if (success) {
             uploadedFiles = 1;
             uploadedImages = exportResult.imageCount;
-            print('[WebDAV] 备份上传成功 (影视${exportResult.movieCount} 书籍${exportResult.bookCount} 笔记${exportResult.noteCount} 图片${exportResult.imageCount})');
+            debugPrint('[WebDAV] 备份上传成功 (影视${exportResult.movieCount} 书籍${exportResult.bookCount} 笔记${exportResult.noteCount} 图片${exportResult.imageCount})');
           } else {
             return SyncResult(success: false, message: '上传备份文件失败');
           }
@@ -246,7 +246,7 @@ class WebDAVService {
               downloadedFiles = 1;
               downloadedImages = importResult.stats?['图片'] ?? 0;
               needReload = true;
-              print('[WebDAV] 备份恢复成功: ${importResult.statsText}');
+              debugPrint('[WebDAV] 备份恢复成功: ${importResult.statsText}');
             } else {
               return SyncResult(success: false, message: importResult.errorMessage ?? '恢复备份失败');
             }
@@ -268,11 +268,11 @@ class WebDAVService {
               downloadedFiles = 1;
               downloadedImages = importResult.stats?['图片'] ?? 0;
               needReload = true;
-              print('[WebDAV] 远程备份已恢复: ${importResult.statsText}');
+              debugPrint('[WebDAV] 远程备份已恢复: ${importResult.statsText}');
             }
           } else {
             try { await tempZip.delete(); } catch (_) {}
-            print('[WebDAV] 服务器无备份，仅上传本地数据');
+            debugPrint('[WebDAV] 服务器无备份，仅上传本地数据');
           }
 
           // 始终上传本地，确保远程是最新的
@@ -282,7 +282,7 @@ class WebDAVService {
             if (uploadSuccess) {
               uploadedFiles = 1;
               uploadedImages = exportResult.imageCount;
-              print('[WebDAV] 本地备份已上传 (影视${exportResult.movieCount} 书籍${exportResult.bookCount} 笔记${exportResult.noteCount} 图片${exportResult.imageCount})');
+              debugPrint('[WebDAV] 本地备份已上传 (影视${exportResult.movieCount} 书籍${exportResult.bookCount} 笔记${exportResult.noteCount} 图片${exportResult.imageCount})');
             }
           }
         }
@@ -338,7 +338,7 @@ class WebDAVService {
     await prefs.setBool(_autoSyncKey, true);
 
     // 立即执行一次同步
-    print('[WebDAV] 自动同步已启动，间隔 $_autoSyncIntervalMinutes 分钟');
+    debugPrint('[WebDAV] 自动同步已启动，间隔 $_autoSyncIntervalMinutes 分钟');
     await syncData(direction: SyncDirection.bidirectional);
 
     // 设置定时器
@@ -407,10 +407,10 @@ class WebDAVService {
         }
       }
 
-      print('[WebDAV] PUT $url -> ${response.statusCode}');
+      debugPrint('[WebDAV] PUT $url -> ${response.statusCode}');
       return response.statusCode == 200 || response.statusCode == 201 || response.statusCode == 204;
     } catch (e) {
-      print('[WebDAV] _uploadBytes error: $e');
+      debugPrint('[WebDAV] _uploadBytes error: $e');
       return false;
     }
   }
@@ -440,13 +440,13 @@ class WebDAVService {
         }
       }
 
-      print('[WebDAV] GET $url -> ${response.statusCode}');
+      debugPrint('[WebDAV] GET $url -> ${response.statusCode}');
 
       if (response.statusCode == 200) {
         await localFile.parent.create(recursive: true);
         final bytes = await response.stream.toBytes();
         await localFile.writeAsBytes(bytes);
-        print('[WebDAV] Downloaded ${bytes.length} bytes');
+        debugPrint('[WebDAV] Downloaded ${bytes.length} bytes');
         return true;
       }
       return false;