refactor(ai): migrate mistral provider to conversations sdk

packages/ai/src/providers/register-builtins.ts

@@ -5,6 +5,7 @@ import { streamAzureOpenAIResponses, streamSimpleAzureOpenAIResponses } from "./
 import { streamGoogle, streamSimpleGoogle } from "./google.js";
 import { streamGoogleGeminiCli, streamSimpleGoogleGeminiCli } from "./google-gemini-cli.js";
 import { streamGoogleVertex, streamSimpleGoogleVertex } from "./google-vertex.js";
+import { streamMistral, streamSimpleMistral } from "./mistral.js";
 import { streamOpenAICodexResponses, streamSimpleOpenAICodexResponses } from "./openai-codex-responses.js";
 import { streamOpenAICompletions, streamSimpleOpenAICompletions } from "./openai-completions.js";
 import { streamOpenAIResponses, streamSimpleOpenAIResponses } from "./openai-responses.js";
@@ -22,6 +23,12 @@ export function registerBuiltInApiProviders(): void {
 		streamSimple: streamSimpleOpenAICompletions,
 	});
 
+	registerApiProvider({
+		api: "mistral-conversations",
+		stream: streamMistral,
+		streamSimple: streamSimpleMistral,
+	});
+
 	registerApiProvider({
 		api: "openai-responses",
 		stream: streamOpenAIResponses,