Port the Gemma, Nemotron, and Phi families

app/MindWork AI Studio/Models/NVIDIA/NemotronFamily.cs

@@ -0,0 +1,41 @@
+using static AIStudio.Provider.Capability;
+
+namespace AIStudio.Models.NVIDIA;
+
+/// <summary>
+/// Nemotron, which NVIDIA builds for agentic work and mostly out of somebody else's weights.
+/// </summary>
+/// <remarks>
+/// That last part is what the rules have to get right. Llama-3.3-Nemotron-Super carries two family
+/// names, and the previous rules answered it as a Llama for no better reason than that the Llama
+/// block stood higher up in the file. What NVIDIA changed about those weights is exactly the part
+/// the answer is about: the thinking switch and the tool template. Here the name part wins over the
+/// substring, so the model is answered by the family which made it what it is.
+///
+/// Every generation is text only. The point releases carry a line of their own because a dot
+/// separates versions rather than name parts, so "nemotron-3" does not answer for "nemotron-3.5".
+/// </remarks>
+public sealed class NemotronFamily : ModelFamily
+{
+    /// <inheritdoc />
+    public override ModelVendor Vendor => ModelVendor.NVIDIA;
+
+    /// <inheritdoc />
+    public override ModelSource Source => new("https://huggingface.co/nvidia", new DateOnly(2026, 9, 11), "Ported unchanged from the Nemotron block of ProviderExtensions.OpenSource.cs.");
+
+    /// <inheritdoc />
+    protected override void Declare(ModelFamilyBuilder builder)
+    {
+        // The earlier generations have to be asked to think:
+        builder.Rule("nemotron").AsSegment()
+            .Capabilities(TEXT_INPUT | TEXT_OUTPUT | FUNCTION_CALLING)
+            .Apis(CHAT_COMPLETION_API)
+            .Reasoning(ReasoningSupport.OPTIONAL);
+
+        // The third one thinks unless the request says otherwise, through enable_thinking=False:
+        builder.Rule("nemotron-3").AsSegment().Inherits()
+            .Reasoning(ReasoningSupport.ON_BY_DEFAULT);
+
+        builder.Rule("nemotron-3.5").AsSegment().Inherits();
+    }
+}