refactor(opencode): remove core service layer exports (#34518)

packages/opencode/src/storage/storage.ts

@@ -210,7 +210,7 @@ const MIGRATIONS: Migration[] = [
   }),
 ]
 
-export const layer = Layer.effect(
+const layer = Layer.effect(
   Service,
   Effect.gen(function* () {
     const fs = yield* FSUtil.Service
@@ -322,8 +322,6 @@ export const layer = Layer.effect(
   }),
 )
 
-export const defaultLayer = layer.pipe(Layer.provide(FSUtil.defaultLayer), Layer.provide(Git.defaultLayer))
-
 export const node = LayerNode.make({ service: Service, layer: layer, deps: [FSUtil.node, Git.node] })
 
 export * as Storage from "./storage"