Function fileExists

src/index.ts:847–854

* Check if file/directory exists

(filePath: string)

 * Check if file/directory exists
 */
async function fileExists(filePath: string): Promise<boolean> {
  try {
    await fs.access(filePath);
    return true;
  } catch {
    return false;
  }
}

/**
 * Migrate legacy file structure to .codebase-context/ folder.