添加guard 蒙层

Shared/KBLocalizationManager.h

@@ -47,6 +47,8 @@ extern NSString * const KBLocalizationDidChangeNotification;
 /// 基于一组“偏好语言”计算最佳支持语言。
 - (NSString *)bestSupportedLanguageForPreferred:(NSArray<NSString *> *)preferred;
 
+- (void)reloadFromSharedStorageIfNeeded;
+
 @end
 
 /// 便捷宏：与 NSLocalizedString 类似，但遵循 KBLocalizationManager 当前语言

Shared/KBLocalizationManager.m

@@ -177,4 +177,14 @@ static inline NSMutableDictionary *KBLocBaseKCQuery(void) {
     return lang;
 }
 
+- (void)reloadFromSharedStorageIfNeeded {
+    NSString *saved = [[self class] kc_read];
+    if (saved.length == 0) return;
+    if ([saved isEqualToString:self.currentLanguageCode]) return;
+
+    [self applyLanguage:saved];
+    [[NSNotificationCenter defaultCenter] postNotificationName:KBLocalizationDidChangeNotification
+                                                        object:nil];
+}
+
 @end