Rebuilt how AI Studio knows what a model can do (#960)

app/MindWork AI Studio/Models/Microsoft/E5Family.cs

@@ -0,0 +1,31 @@
+using AIStudio.Provider;
+
+using static AIStudio.Provider.Capability;
+
+namespace AIStudio.Models.Microsoft;
+
+/// <summary>
+/// E5, the embedding models built on somebody else's weights.
+/// </summary>
+/// <remarks>
+/// "e5-mistral-7b-instruct" is what made this a family of its own. It is an embedding model, and it
+/// carries the name of the model it was trained from, so the Mistral rules answer for it and tell
+/// it that it chats and calls functions. Saying which name means what it says is cheaper than
+/// teaching every family whose weights somebody built an embedder from.
+///
+/// The E5 part is the whole statement: the rest of the name says nothing about what the model does.
+/// </remarks>
+public sealed class E5Family : ModelFamily
+{
+    /// <inheritdoc />
+    public override ModelVendor Vendor => ModelVendor.MICROSOFT;
+
+    /// <inheritdoc />
+    public override ModelSource Source => new("https://huggingface.co/intfloat/e5-mistral-7b-instruct", new DateOnly(2026, 9, 11), "The app lists this under IProvider.GetEmbeddingModels, which is where the statement that it embeds comes from.");
+
+    /// <inheritdoc />
+    protected override void Declare(ModelFamilyBuilder builder) =>
+        builder.Rule("e5").AsSegment()
+            .Capabilities(TEXT_INPUT | EMBEDDING)
+            .Kind(ModelKind.EMBEDDING);
+}