test: contain media roots state env

src/media/local-roots.test.ts

@@ -1,7 +1,8 @@
 // Local media root tests cover allowed root normalization and matching.
 import path from "node:path";
 import { pathToFileURL } from "node:url";
-import { afterEach, describe, expect, it, vi } from "vitest";
+import { describe, expect, it } from "vitest";
+import { withEnv } from "../test-utils/env.js";
 import {
   appendLocalMediaParentRoots,
   buildMediaLocalRoots,
@@ -16,8 +17,7 @@ function normalizeHostPath(value: string): string {
 
 describe("local media roots", () => {
   function withStateDir<T>(stateDir: string, run: () => T): T {
-    vi.stubEnv("OPENCLAW_STATE_DIR", stateDir);
-    return run();
+    return withEnv({ OPENCLAW_STATE_DIR: stateDir }, run);
   }
 
   function expectNormalizedRootsContain(
@@ -73,10 +73,6 @@ describe("local media roots", () => {
     }
   }
 
-  afterEach(() => {
-    vi.unstubAllEnvs();
-  });
-
   it.each([
     {
       name: "keeps temp, media cache, canvas, and workspace roots by default",