Pause the school on warning notices until the owner dismisses them.

Co-authored-by: Cursor <cursoragent@cursor.com>

src/HSchool.Simulation/SimulationOptions.cs

@@ -64,6 +64,11 @@ public sealed class SimulationOptions
     /// </summary>
     public int MaxDecisionsPerTick { get; set; } = 64;
 
+    /// <summary>
+    /// Unclosed warning/error notices kept in the save. The next one is not posted.
+    /// </summary>
+    public int MaxStickyNotices { get; set; } = 8;
+
     /// <summary>
     /// Working days from Monday. Five is Mon–Fri; six adds Saturday; seven is every day.
     /// </summary>