Replace Instance.disposeAll/load with fixture helper (#25418)

packages/opencode/src/effect/app-runtime.ts

@@ -39,6 +39,7 @@ import { Command } from "@/command"
 import { Truncate } from "@/tool/truncate"
 import { ToolRegistry } from "@/tool/registry"
 import { Format } from "@/format"
+import { InstanceStore } from "@/project/instance-store"
 import { Project } from "@/project/project"
 import { Vcs } from "@/project/vcs"
 import { Workspace } from "@/control-plane/workspace"
@@ -90,6 +91,7 @@ export const AppLayer = Layer.mergeAll(
   Truncate.defaultLayer,
   ToolRegistry.defaultLayer,
   Format.defaultLayer,
+  InstanceStore.defaultLayer,
   Project.defaultLayer,
   Vcs.defaultLayer,
   Workspace.defaultLayer,