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

packages/opencode/test/tool/edit.test.ts

@@ -4,7 +4,7 @@ import fs from "fs/promises"
 import { Effect, Layer, ManagedRuntime } from "effect"
 import { EditTool } from "../../src/tool/edit"
 import { Instance } from "../../src/project/instance"
-import { tmpdir } from "../fixture/fixture"
+import { disposeAllInstances, tmpdir } from "../fixture/fixture"
 import { LSP } from "@/lsp/lsp"
 import { AppFileSystem } from "@opencode-ai/core/filesystem"
 import { Format } from "../../src/format"
@@ -26,7 +26,7 @@ const ctx = {
 }
 
 afterEach(async () => {
-  await Instance.disposeAll()
+  await disposeAllInstances()
 })
 
 const runtime = ManagedRuntime.make(