refactor(agent): dedupe harness and command workflows

src/agents/skills.buildworkspaceskillstatus.e2e.test.ts

@@ -3,28 +3,7 @@ import os from "node:os";
 import path from "node:path";
 import { describe, expect, it } from "vitest";
 import { buildWorkspaceSkillStatus } from "./skills-status.js";
-
-async function writeSkill(params: {
-  dir: string;
-  name: string;
-  description: string;
-  metadata?: string;
-  body?: string;
-}) {
-  const { dir, name, description, metadata, body } = params;
-  await fs.mkdir(dir, { recursive: true });
-  await fs.writeFile(
-    path.join(dir, "SKILL.md"),
-    `---
-name: ${name}
-description: ${description}${metadata ? `\nmetadata: ${metadata}` : ""}
----
-
-${body ?? `# ${name}\n`}
-`,
-    "utf-8",
-  );
-}
+import { writeSkill } from "./skills.e2e-test-helpers.js";
 
 describe("buildWorkspaceSkillStatus", () => {
   it("reports missing requirements and install options", async () => {