refactor(test): reuse shared skill writer in sandbox and bundled tests

src/agents/skills/bundled-dir.e2e.test.ts

@@ -4,17 +4,9 @@ import path from "node:path";
 import { pathToFileURL } from "node:url";
 import { afterEach, beforeEach, describe, expect, it } from "vitest";
 import { captureEnv } from "../../test-utils/env.js";
+import { writeSkill } from "../skills.e2e-test-helpers.js";
 import { resolveBundledSkillsDir } from "./bundled-dir.js";
 
-async function writeSkill(dir: string, name: string) {
-  await fs.mkdir(dir, { recursive: true });
-  await fs.writeFile(
-    path.join(dir, "SKILL.md"),
-    `---\nname: ${name}\ndescription: ${name}\n---\n\n# ${name}\n`,
-    "utf-8",
-  );
-}
-
 describe("resolveBundledSkillsDir", () => {
   let envSnapshot: ReturnType<typeof captureEnv>;
 
@@ -38,7 +30,11 @@ describe("resolveBundledSkillsDir", () => {
     const root = await fs.mkdtemp(path.join(os.tmpdir(), "openclaw-bundled-"));
     await fs.writeFile(path.join(root, "package.json"), JSON.stringify({ name: "openclaw" }));
 
-    await writeSkill(path.join(root, "skills", "peekaboo"), "peekaboo");
+    await writeSkill({
+      dir: path.join(root, "skills", "peekaboo"),
+      name: "peekaboo",
+      description: "peekaboo",
+    });
 
     const distDir = path.join(root, "dist");
     await fs.mkdir(distDir, { recursive: true });