0.7.4

首先我加了CI课程表json的读取，然后把天气时钟这个老问题也修了。

LanMountainDesktop/Models/AppSettingsSnapshot.cs

@@ -33,6 +33,8 @@ public sealed class AppSettingsSnapshot
 
     public string WallpaperPlacement { get; set; } = "Fill";
 
+    public int SystemWallpaperRefreshIntervalSeconds { get; set; } = 300;
+
     public int SettingsTabIndex { get; set; } = 0;
 
     public string? SettingsTabTag { get; set; }