chore(vendor): import pi 0.85.1

Imported as a linear vendor commit so forge rebases do not replay the upstream root tree.

git-subtree-dir: third_party/pi

git-subtree-split: d981de1229ef899957bbe968bc8dcda02a21f477

third_party/pi/packages/ai/src/providers/fireworks.ts

@@ -0,0 +1,19 @@
+import { anthropicMessagesApi } from "../api/anthropic-messages.lazy.ts";
+import { openAICompletionsApi } from "../api/openai-completions.lazy.ts";
+import { envApiKeyAuth } from "../auth/helpers.ts";
+import { createProvider, type Provider } from "../models.ts";
+import { FIREWORKS_MODELS } from "./fireworks.models.ts";
+
+export function fireworksProvider(): Provider<"anthropic-messages" | "openai-completions"> {
+	return createProvider({
+		id: "fireworks",
+		name: "Fireworks",
+		baseUrl: "https://api.fireworks.ai/inference",
+		auth: { apiKey: envApiKeyAuth("Fireworks API key", ["FIREWORKS_API_KEY"]) },
+		models: Object.values(FIREWORKS_MODELS),
+		api: {
+			"anthropic-messages": anthropicMessagesApi(),
+			"openai-completions": openAICompletionsApi(),
+		},
+	});
+}