Reworked the Hugging Face provider (#944)

app/MindWork AI Studio/Provider/HuggingFace/HFInferenceProvider.cs

@@ -3,16 +3,46 @@
 /// <summary>
 /// Enum for inference providers that Hugging Face supports.
 /// </summary>
+/// <remarks>
+/// Besides the providers themselves, this enum carries the routing strategies Hugging Face offers.
+/// They are no providers, but they take the same place: the router picks a provider for us instead
+/// of us naming one.
+///
+/// NONE must stay the first value: settings are read through the tolerant enum converter, which
+/// falls back to the first value whenever it meets a name we no longer know. That is what happens
+/// to a configuration naming one of the providers Hugging Face stopped routing in July 2026
+/// (Hyperbolic, SambaNova, Nebius, NVIDIA, Clarifai, Black Forest Labs), and to one naming the
+/// Hugging Face Inference API, which serves no model we can reach: it has no chat models at all,
+/// and its OpenAI-compatible routes for embeddings and transcription do not exist. Such a provider
+/// has to end up on NONE, where the validation asks the user to choose again. Were a routing
+/// strategy first, those configurations would silently switch to automatic routing instead.
+/// </remarks>
 public enum HFInferenceProvider
 {
     NONE,
-    
+
+    //
+    // Routing strategies. Hugging Face writes them where a provider name would go:
+    //
+    AUTOMATIC,
+    CHEAPEST,
+    PREFERRED,
+
+    //
+    // The providers Hugging Face routes:
+    //
+    BASETEN,
     CEREBRAS,
-    NEBIUS_AI_STUDIO,
-    SAMBANOVA,
-    NOVITA,
-    HYPERBOLIC,
-    TOGETHER_AI,
+    COHERE,
+    DEEPINFRA,
+    FEATHERLESS_AI,
     FIREWORKS,
-    HF_INFERENCE_API,
+    GROQ,
+    NOVITA,
+    NSCALE,
+    OVHCLOUD,
+    PUBLIC_AI,
+    SCALEWAY,
+    TOGETHER_AI,
+    ZAI,
 }