refactor(core): refine layer node replacements (#34377)

packages/core/test/models.test.ts

@@ -1,11 +1,12 @@
 import { describe, expect, beforeAll, beforeEach, afterAll } from "bun:test"
 import { Effect, Layer, Ref } from "effect"
 import { HttpClient, HttpClientResponse } from "effect/unstable/http"
-import { FSUtil } from "@opencode-ai/core/fs-util"
+import { AppNodeBuilder } from "@opencode-ai/core/effect/app-node-builder"
+import { LayerNodePlatform } from "@opencode-ai/core/effect/app-node-platform"
+import { LayerNode } from "@opencode-ai/core/effect/layer-node"
 import { Flag } from "@opencode-ai/core/flag/flag"
 import { Global } from "@opencode-ai/core/global"
 import { ModelsDev } from "@opencode-ai/core/models-dev"
-import { EventV2 } from "@opencode-ai/core/event"
 import { it } from "./lib/effect"
 import { readFile, rm, writeFile, utimes, mkdir } from "fs/promises"
 import path from "path"
@@ -90,10 +91,10 @@ const buildLayer = (state: Ref.Ref<MockState>) =>
   // Layer.fresh is required: ModelsDev.layer is a module-level Layer constant,
   // and Effect.provide uses a process-global MemoMap by default — without fresh,
   // every test would reuse the cachedInvalidateWithTTL state from the first run.
-  Layer.fresh(ModelsDev.layer).pipe(
-    Layer.provide(Layer.succeed(HttpClient.HttpClient, makeMockClient(state))),
-    Layer.provide(FSUtil.defaultLayer),
-    Layer.provide(EventV2.defaultLayer),
+  Layer.fresh(
+    AppNodeBuilder.build(ModelsDev.node, [
+      [LayerNodePlatform.httpClient, Layer.succeed(HttpClient.HttpClient, makeMockClient(state))],
+    ]),
   )
 
 const writeCacheText = (text: string, mtimeMs?: number) =>