// C2-09b: a pure leading-address parser, shared with the room UI's parity test.
// The remainder is for empty-body checks; the broker always stores the original input.
export function parseAddress(input) {
  if (typeof input !== 'string') throw new TypeError('body must be a string');
  const tags = [];
  let body = input.trimStart();
  while (true) {
    const token = /^@(\S+)(?:\s+|$)/u.exec(body);
    if (!token) break;
    tags.push(token[1]);
    body = body.slice(token[0].length);
  }
  return { tags, body };
}