refactor(core): remove tool layer exports (#34622)

packages/sdk-next/src/opencode.ts

@@ -1,4 +1,6 @@
 import { OpenCode } from "@opencode-ai/client/effect"
+import { AppNodeBuilder } from "@opencode-ai/core/effect/app-node-builder"
+import { LayerNode } from "@opencode-ai/core/effect/layer-node"
 import { PermissionSaved } from "@opencode-ai/core/permission/saved"
 import { ApplicationTools } from "@opencode-ai/core/tool/application-tools"
 import { createEmbeddedRoutes } from "@opencode-ai/server/routes"
@@ -9,7 +11,7 @@ export const create = Effect.fn("OpenCode.create")(function* () {
   const scope = yield* Scope.Scope
   const memoMap = yield* Layer.makeMemoMap
   const context = yield* Layer.buildWithMemoMap(
-    Layer.merge(ApplicationTools.layer, PermissionSaved.defaultLayer),
+    AppNodeBuilder.build(LayerNode.group([ApplicationTools.node, PermissionSaved.node])),
     memoMap,
     scope,
   )