Move the model kinds into the rule engine

app/MindWork AI Studio/Models/Kinds/RerankingModelsFamily.cs

@@ -0,0 +1,34 @@
+using AIStudio.Provider;
+
+namespace AIStudio.Models.Kinds;
+
+/// <summary>
+/// The models which put search results back into order.
+/// </summary>
+/// <remarks>
+/// A reranker is almost always named after the embedding model it belongs to: bge-reranker sits
+/// next to bge, gte-multilingual-reranker next to gte, Qwen3-VL-Reranker next to Qwen3-VL-Embedding.
+/// So nearly every one of these names carries an embedding marker as well, and the computed
+/// specificity has no way of knowing which of the two statements is the one about the model itself.
+/// This is the one place where the order of asking is the knowledge, which is what the explicit rank
+/// is for.
+/// </remarks>
+public sealed class RerankingModelsFamily : ModelFamily
+{
+    /// <summary>
+    /// Why this outranks every statement about embedding models.
+    /// </summary>
+    private const string NAMED_AFTER_THE_EMBEDDING_MODEL = "A reranker carries the name of the embedding model it reorders for, so the embedding markers match it too. Which of them is right cannot be worked out of the text.";
+
+    /// <inheritdoc />
+    public override ModelVendor Vendor => ModelVendor.UNKNOWN;
+
+    /// <inheritdoc />
+    public override ModelSource Source => new("https://huggingface.co/models?pipeline_tag=text-ranking", new DateOnly(2026, 9, 12), "Ported from the reranking markers of Provider/ModelKindExtensions.cs, where the same precedence was written as the order of two if statements.");
+
+    /// <inheritdoc />
+    protected override void Declare(ModelFamilyBuilder builder) =>
+        builder.Modifier("rerank").AsSubstring()
+            .Rank(1, NAMED_AFTER_THE_EMBEDDING_MODEL)
+            .Kind(ModelKind.RERANKING);
+}