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/xiaomi-token-plan-sgp.ts

@@ -0,0 +1,15 @@
+import { openAICompletionsApi } from "../api/openai-completions.lazy.ts";
+import { envApiKeyAuth } from "../auth/helpers.ts";
+import { createProvider, type Provider } from "../models.ts";
+import { XIAOMI_TOKEN_PLAN_SGP_MODELS } from "./xiaomi-token-plan-sgp.models.ts";
+
+export function xiaomiTokenPlanSgpProvider(): Provider<"openai-completions"> {
+	return createProvider({
+		id: "xiaomi-token-plan-sgp",
+		name: "Xiaomi Token Plan SGP",
+		baseUrl: "https://token-plan-sgp.xiaomimimo.com/v1",
+		auth: { apiKey: envApiKeyAuth("Xiaomi Token Plan SGP API key", ["XIAOMI_TOKEN_PLAN_SGP_API_KEY"]) },
+		models: Object.values(XIAOMI_TOKEN_PLAN_SGP_MODELS),
+		api: openAICompletionsApi(),
+	});
+}