Function collectMarkdown

src/utils/plugins/validatePlugin.ts:718–752

* Recursively collect .md files under a directory. Uses withFileTypes to * avoid a stat per entry. Returns absolute paths so error messages stay * readable.

(
  dir: string,
  isSkillsDir: boolean,
)

 * readable.
 */
async function collectMarkdown(
  dir: string,
  isSkillsDir: boolean,
): Promise<string[]> {
  let entries: Dirent[]
  try {
    entries = await readdir(dir, { withFileTypes: true })
  } catch (e: unknown) {
    const code = getErrnoCode(e)
    if (code === 'ENOENT' || code === 'ENOTDIR') return []
    throw e
  }

  // Skills use <name>/SKILL.md — only descend one level, only collect SKILL.md.
  // Matches the runtime loader: single .md files in skills/ are NOT loaded,
  // and subdirectories of a skill dir aren't scanned. Paths are speculative
  // (the subdir may lack SKILL.md); the caller handles ENOENT.
  if (isSkillsDir) {
    return entries
      .filter(e => e.isDirectory())
      .map(e => path.join(dir, e.name, 'SKILL.md'))
  }

  // Commands/agents: recurse and collect all .md files.
  const out: string[] = []
  for (const entry of entries) {
    const full = path.join(dir, entry.name)
    if (entry.isDirectory()) {
      out.push(...(await collectMarkdown(full, false)))
    } else if (entry.isFile() && entry.name.toLowerCase().endsWith('.md')) {
      out.push(full)
    }
  }
  return out
}

/**
 * Validate the content files inside a plugin directory — skills, agents,