Lock the Krea catalog at ages 6-11 and keep SDXL ids when a living save has no models list.

tests/HSchool.Server.Tests/SwarmUiSettingsStoreTests.cs

@@ -233,6 +233,25 @@ public class SwarmUiSettingsStoreTests
 
         var child = Assert.Single(config.Presets, preset => preset.Id == "child");
         Assert.Equal(SwarmUiModelDefinition.RealismV25Id, child.Model);
+
+        var ageRule = Assert.Single(config.AgeRules);
+        Assert.Equal(6, ageRule.MinAge);
+        Assert.Equal(11, ageRule.MaxAge);
+        Assert.Equal("child", ageRule.PresetId);
+    }
+
+    [Theory]
+    [InlineData(6, "child")]
+    [InlineData(11, "child")]
+    [InlineData(5, "default")]
+    [InlineData(12, "default")]
+    public void Resolve_AgeRuleCoversSixThroughElevenInclusive(int age, string presetId)
+    {
+        var config = SwarmUiConfigFile.CreateDefault();
+        var profile = config.Resolve(age, PortraitKind.Avatar);
+
+        Assert.Equal(presetId, profile.PresetId);
+        Assert.Equal(SwarmUiModelDefinition.RealismV25Id, profile.Model);
     }
 
     [Fact]
@@ -288,6 +307,8 @@ public class SwarmUiSettingsStoreTests
         Assert.Equal(expected.Presets[1].Model, loaded.Presets[1].Model);
         Assert.Equal(expected.Presets[1].Style, loaded.Presets[1].Style);
         Assert.Equal(expected.Presets[1].Negative, loaded.Presets[1].Negative);
+        Assert.Equal(expected.Presets[1].Avatar?.ShotType, loaded.Presets[1].Avatar?.ShotType);
+        Assert.Equal(expected.Presets[1].FullBody?.ShotType, loaded.Presets[1].FullBody?.ShotType);
     }
 
     [Fact]
@@ -354,6 +375,48 @@ public class SwarmUiSettingsStoreTests
         Assert.Equal(SwarmUiModelDefinition.DreamShaperId, living.Resolve(8, PortraitKind.Avatar).Model);
     }
 
+    [Fact]
+    public void NormalizeAfterLoad_EmptyModelsKeepSdxlPresetIdsInsteadOfKreaCatalog()
+    {
+        var living = new SwarmUiConfigFile
+        {
+            ActivePresetId = "default",
+            Presets =
+            [
+                new SwarmUiPresetDefinition
+                {
+                    Id = "default",
+                    Label = "Default",
+                    Model = SwarmUiModelDefinition.BabesId,
+                    Avatar = new SwarmUiKindPreset { Width = 1024, Height = 1024 },
+                    Custom = new SwarmUiKindPreset { Width = 896, Height = 1152 },
+                    FullBody = new SwarmUiKindPreset { Width = 896, Height = 1152 },
+                },
+                new SwarmUiPresetDefinition
+                {
+                    Id = "child",
+                    Label = "Children",
+                    Model = SwarmUiModelDefinition.DreamShaperId,
+                    Avatar = new SwarmUiKindPreset { Width = 1024, Height = 1024 },
+                    Custom = new SwarmUiKindPreset { Width = 896, Height = 1152 },
+                    FullBody = new SwarmUiKindPreset { Width = 896, Height = 1152 },
+                },
+            ],
+            AgeRules = [new SwarmUiAgeRule { MinAge = 6, MaxAge = 11, PresetId = "child" }],
+        };
+
+        living.NormalizeAfterLoad();
+
+        Assert.Equal(
+            [SwarmUiModelDefinition.BabesId, SwarmUiModelDefinition.DreamShaperId],
+            living.Models.Select(model => model.Id));
+        Assert.DoesNotContain(living.Models, model => model.Id == SwarmUiModelDefinition.MuseId);
+        Assert.DoesNotContain(living.Models, model => model.Id == SwarmUiModelDefinition.RealismV25Id);
+        Assert.Equal(SwarmUiModelDefinition.BabesId, living.Presets[0].Model);
+        Assert.Equal(SwarmUiModelDefinition.DreamShaperId, living.Presets[1].Model);
+        Assert.Equal(SwarmUiModelDefinition.DreamShaperId, living.Resolve(8, PortraitKind.Avatar).Model);
+    }
+
     [Fact]
     public void Clone_DoesNotInjectKreaModelsIntoAnExistingSchoolCopy()
     {