Port the OpenAI families and add the model registry

app/MindWork AI Studio/Models/OpenAI/WhisperFamily.cs

@@ -0,0 +1,29 @@
+using AIStudio.Provider;
+
+using static AIStudio.Provider.Capability;
+
+namespace AIStudio.Models.OpenAI;
+
+/// <summary>
+/// Whisper, which listens and writes down what it heard.
+/// </summary>
+/// <remarks>
+/// OpenAI built it and released the weights, so it turns up far beyond OpenAI's own API: Fireworks,
+/// the GWDG, and Groq all serve a Whisper. This family is bound to no provider for that reason --
+/// it is the same model wherever it runs, and the previous rules answered for it at every one of
+/// those places with the global fallback, tool calling included.
+/// </remarks>
+public sealed class WhisperFamily : ModelFamily
+{
+    /// <inheritdoc />
+    public override ModelVendor Vendor => ModelVendor.OPEN_AI;
+
+    /// <inheritdoc />
+    public override ModelSource Source => new("https://platform.openai.com/docs/guides/speech-to-text", new DateOnly(2026, 9, 11), "The app lists these under IProvider.GetTranscriptionModels, which is where the statement that they transcribe comes from.");
+
+    /// <inheritdoc />
+    protected override void Declare(ModelFamilyBuilder builder) =>
+        builder.Rule("whisper").AsSegment()
+            .Capabilities(SPEECH_INPUT | TEXT_OUTPUT)
+            .Kind(ModelKind.TRANSCRIPTION);
+}