File session-messages.test.ts

packages/opencode/test/server/session-messages.test.ts:None–None

import { afterEach, describe, expect } from "bun:test"
import { SessionV1 } from "@opencode-ai/core/v1/session"
import { LayerNode } from "@opencode-ai/core/effect/layer-node"
import { Effect, Layer } from "effect"