fix(ai): bound the provider test and explain why it failed (#3319)

Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
Co-authored-by: Amruth Pillai <im.amruth@gmail.com>

packages/ai/src/types.ts

@@ -41,3 +41,24 @@ export const AI_PROVIDER_DEFAULT_BASE_URLS: Record<AIProvider, string> = {
 	ollama: "https://ollama.com/api",
 	"openai-compatible": "",
 };
+
+// Brand names, used when a message has to name the provider outside a translated UI string. Every
+// such message opens with this value, so the generic fallback is capitalised to match.
+export const AI_PROVIDER_DISPLAY_NAMES: Record<AIProvider, string> = {
+	openai: "OpenAI",
+	anthropic: "Anthropic",
+	gemini: "Google Gemini",
+	"vercel-ai-gateway": "Vercel AI Gateway",
+	openrouter: "OpenRouter",
+	mistral: "Mistral",
+	cohere: "Cohere",
+	xai: "xAI",
+	groq: "Groq",
+	deepseek: "DeepSeek",
+	togetherai: "Together AI",
+	fireworks: "Fireworks AI",
+	cerebras: "Cerebras",
+	perplexity: "Perplexity",
+	ollama: "Ollama",
+	"openai-compatible": "The provider",
+};