Add Krea portrait models and write appearance as prose.

New schools default to Realism v2.5; living saves keep their catalog.

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

tests/HSchool.AppHost.Tests/PortraitApiTests.cs

@@ -85,7 +85,8 @@ public class PortraitApiTests(AppHostFixture fixture)
         var payload = await response.Content.ReadFromJsonAsync<PortraitPromptPayload>(TestContext.Current.CancellationToken);
         Assert.NotNull(payload);
         Assert.Equal("avatar", payload!.Kind);
-        Assert.Contains("age", payload.Positive, StringComparison.OrdinalIgnoreCase);
+        Assert.Contains("years old", payload.Positive, StringComparison.OrdinalIgnoreCase);
+        Assert.DoesNotContain("age ", payload.Positive, StringComparison.OrdinalIgnoreCase);
         Assert.False(string.IsNullOrWhiteSpace(payload.Negative));
         Assert.False(string.IsNullOrWhiteSpace(payload.PresetId));
     }
@@ -103,6 +104,8 @@ public class PortraitApiTests(AppHostFixture fixture)
         Assert.NotNull(settings);
         Assert.NotEmpty(settings!.Presets);
         Assert.NotEmpty(settings.Models);
+        Assert.Contains(settings.Models, model => model.Id == "museByStableYogi_v30TurboGguf.gguf");
+        Assert.Contains(settings.Models, model => model.Id == "realismByStableYogi_v25INT8Turbo.safetensors");
         Assert.False(string.IsNullOrWhiteSpace(settings.ActivePresetId));
     }
 
@@ -122,6 +125,14 @@ public class PortraitApiTests(AppHostFixture fixture)
         Assert.True(list.GetArrayLength() > 0);
         Assert.True(presets.TryGetProperty("models", out var models));
         Assert.True(models.GetArrayLength() > 0);
+        var ids = models.EnumerateArray().Select(model => model.GetProperty("id").GetString()).ToList();
+        Assert.Contains("museByStableYogi_v30TurboGguf.gguf", ids);
+        Assert.Contains("realismByStableYogi_v25INT8Turbo.safetensors", ids);
+        var defaultPreset = presets.GetProperty("presets").EnumerateArray()
+            .First(preset => preset.GetProperty("id").GetString() == "default");
+        Assert.Equal(
+            "realismByStableYogi_v25INT8Turbo.safetensors",
+            defaultPreset.GetProperty("model").GetString());
     }
 
     [Fact]