File agentSession.preStreamError.test.ts

src/node/services/agentSession.preStreamError.test.ts:None–None

import { describe, expect, it, mock, afterEach } from "bun:test";
import { EventEmitter } from "events";
import { PROVIDER_DISPLAY_NAMES } from "@/common/constants/providers";
import type { AIService } from "@/node/services/aiService";