Say at the model where Codestral cannot be chatted with

app/MindWork AI Studio/Models/Mistral/CodestralFamily.cs

@@ -1,3 +1,5 @@
+using AIStudio.Provider;
+
 using static AIStudio.Provider.Capability;
 
 namespace AIStudio.Models.Mistral;
@@ -10,6 +12,12 @@ namespace AIStudio.Models.Mistral;
 /// words the Mistral block looked for, so it walked past every rule and reached the answer meant
 /// for everything nobody had written one for. That answer happened to describe it correctly, which
 /// is why nothing looked wrong -- and is exactly the situation this rebuild is meant to end.
+///
+/// That Mistral serves it to fill in the middle of a file rather than to talk to was the one thing
+/// the rebuild left behind: it stayed in the Mistral provider, as a name check which dropped every
+/// model whose ID begins with "code". It says something about a model, so it belongs to the model,
+/// and it is bound to the provider because it is only true there. Somebody's own server and the
+/// gateways serve the same weights to chat with, which is what the unbound rule above keeps saying.
 /// </remarks>
 public sealed class CodestralFamily : ModelFamily
 {
@@ -17,11 +25,22 @@ public sealed class CodestralFamily : ModelFamily
     public override ModelVendor Vendor => ModelVendor.MISTRAL_AI;
 
     /// <inheritdoc />
-    public override ModelSource Source => new("https://docs.mistral.ai/getting-started/models/models_overview/", new DateOnly(2026, 9, 11), "The answer the previous rules gave it through their fallback: text in, text out, tool calling.");
+    public override ModelSource Source => new("https://docs.mistral.ai/getting-started/models/models_overview/", new DateOnly(2026, 9, 19), "The answer the previous rules gave it through their fallback: text in, text out, tool calling. What Mistral's own catalog makes of it was read from the same page, where Codestral is the model behind the FIM endpoint.");
 
     /// <inheritdoc />
-    protected override void Declare(ModelFamilyBuilder builder) =>
+    protected override void Declare(ModelFamilyBuilder builder)
+    {
         builder.Rule("codestral").AsSegment()
             .Capabilities(TEXT_INPUT | TEXT_OUTPUT | FUNCTION_CALLING)
             .Apis(CHAT_COMPLETION_API);
+
+        //
+        // Bound to Mistral, which makes it the more specific of the two and lets it win there
+        // without anybody writing an order. It continues a text instead of answering in a
+        // conversation, so it must not stand among the models somebody picks for a chat.
+        //
+        builder.Rule("codestral").AsSegment().OnlyOn(LLMProviders.MISTRAL)
+            .Inherits()
+            .Kind(ModelKind.TEXT_COMPLETION);
+    }
 }