chore: Enable "experimentalSortImports" in Oxfmt and reformat all imorts.

src/agents/pi-embedded-runner.test.ts

@@ -1,7 +1,6 @@
 import fs from "node:fs/promises";
 import os from "node:os";
 import path from "node:path";
-
 import { afterAll, beforeAll, describe, expect, it, vi } from "vitest";
 import "./test-helpers/fast-coding-tools.js";
 import type { OpenClawConfig } from "../config/config.js";