refactor(test): share skills e2e helper

src/agents/skills.e2e-test-helpers.ts

@@ -0,0 +1,24 @@
+import fs from "node:fs/promises";
+import path from "node:path";
+
+export 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",
+  );
+}