首次启动APP，其默认主体模式根据时间自动切换

DreamSleep/DreamSleep/Class/Start/Root/AppDelegate.m

@@ -24,6 +24,12 @@
     self.window.backgroundColor = DSWhite;
     [self.window makeKeyAndVisible];
     
+    // 用户首次启动APP，显示模式为自动
+    if (!kGetUserDefaultsBOOL(FirstShowPrivacy)) {
+        kSetUserDefaultsBOOL(YES, ThemeAutoSwitch);
+        kUserDefaultsSynchronize;
+    }
+    
     BOOL firstShowPrivacy = kGetUserDefaultsBOOL(FirstShowPrivacy);
     BOOL firstGuide = kGetUserDefaultsBOOL(IsFirstGuide);
     if (firstShowPrivacy && firstGuide) {