Wire grade trail notices, dress mark factor, and truancy summons weights.

Lesson multipliers stay explicit in tests; poor marks and unexcused absences toast and may auto-summon, while illness stays excused.

tests/HSchool.Content.Tests/GradeTrailBehaviorTests.cs

@@ -0,0 +1,44 @@
+using HSchool.Content;
+
+namespace HSchool.Content.Tests;
+
+public class GradeTrailBehaviorTests
+{
+    private readonly CatalogLoader _loader = new();
+
+    [Fact]
+    public void VanillaCore_LoadsGradeTrailFields()
+    {
+        var catalog = LoadVanilla();
+        Assert.NotNull(catalog.BehaviorRules);
+        Assert.Equal(0.95f, catalog.BehaviorRules.LessonDressMarkFactor);
+        Assert.Equal(2.5f, catalog.BehaviorRules.PoorMarkTrailMaxAverage);
+        Assert.Equal(3, catalog.BehaviorRules.PoorMarkTrailMinMarks);
+        Assert.Equal(2, catalog.BehaviorRules.TruancyTrailMinCount);
+        Assert.Equal(0.35f, catalog.BehaviorRules.GradeTrailSummonChance);
+        Assert.Contains("truancy", catalog.BehaviorRules.OffenseMemoryKinds);
+    }
+
+    [Fact]
+    public void DressFactorAboveOne_FailsTheCatalog()
+    {
+        var documents = PackDocuments.FromDirectory(
+                CatalogLoader.CorePackId,
+                Path.Combine(AppContext.BaseDirectory, "vanilla"))
+            .Append(PackDocuments.Def(
+                CatalogLoader.CorePackId,
+                "behavior",
+                "bad-dress",
+                """{ "defName": "Behavior", "lessonDressMarkFactor": 1.5 }"""))
+            .ToList();
+
+        var ex = Assert.Throws<ContentLoadException>(() => _loader.Load([CatalogLoader.CorePackId], documents));
+        Assert.Contains("lessonDressMarkFactor", ex.Message, StringComparison.Ordinal);
+    }
+
+    private DefCatalog LoadVanilla()
+    {
+        var root = Path.Combine(AppContext.BaseDirectory, "vanilla");
+        return _loader.Load([CatalogLoader.CorePackId], PackDocuments.FromDirectory(CatalogLoader.CorePackId, root));
+    }
+}