Resolve model profiles through the registry

app/MindWork AI Studio/Models/ServiceNow/AprielFamily.cs

@@ -0,0 +1,36 @@
+using static AIStudio.Provider.Capability;
+
+namespace AIStudio.Models.ServiceNow;
+
+/// <summary>
+/// Apriel, from ServiceNow.
+/// </summary>
+/// <remarks>
+/// The Thinker models see, and they always reason: their default chat template opens the thinking
+/// channel, so there is nothing to switch on and nothing to switch off.
+///
+/// This family exists although the line is a small one, and the reason is the tool tokens. They
+/// arrived with 1.6; 1.5 has none. Left to the assumption, 1.5 would be offered tools it cannot
+/// use -- which is the one direction the switch-over must not take, because nobody decided it and
+/// nothing would show it until a request comes back as an error.
+/// </remarks>
+public sealed class AprielFamily : ModelFamily
+{
+    /// <inheritdoc />
+    public override ModelVendor Vendor => ModelVendor.SERVICE_NOW;
+
+    /// <inheritdoc />
+    public override ModelSource Source => new("https://huggingface.co/ServiceNow-AI/Apriel-1.5-15b-Thinker", new DateOnly(2026, 9, 12), "Ported unchanged from the Apriel block of ProviderExtensions.OpenSource.cs.");
+
+    /// <inheritdoc />
+    protected override void Declare(ModelFamilyBuilder builder)
+    {
+        builder.Rule("apriel").AsSubstring()
+            .Capabilities(TEXT_INPUT | MULTIPLE_IMAGE_INPUT | TEXT_OUTPUT | FUNCTION_CALLING)
+            .Apis(CHAT_COMPLETION_API)
+            .Reasoning(ReasoningSupport.ALWAYS);
+
+        builder.Rule("apriel-1.5").AsSubstring().Inherits()
+            .Removes(FUNCTION_CALLING);
+    }
+}