fix tests

tests/package.test.ts

@@ -1,12 +1,13 @@
 import { expect, test } from "bun:test";
 import { mkdir, mkdtemp, rm } from "node:fs/promises";
+import { tmpdir } from "node:os";
 import { join } from "node:path";
 import { Host } from "@opencode/plugin/host";
 import { build } from "../scripts/build.js";
 import { install } from "../scripts/install.js";
 
 test("packed package has independent native plugins and quota-only TUI discovery", async () => {
-    const directory = await mkdtemp("/tmp/opencode/plugin-package-");
+    const directory = await mkdtemp(join(tmpdir(), "plugin-package-"));
     try {
         await build();
         const archive = join(directory, "stanp-opencode.tgz");