// core/flags.js (Lane F) — URL flags. The table of record lives in TECH.md; add rows there.

export function parseFlags(search = location.search) {
  const p = new URLSearchParams(search);
  const on = (k) => p.has(k) && p.get(k) !== '0';
  return {
    stub: on('stub'),
    fly: on('fly'),
    dbg: on('dbg'),
    shots: on('shots'),
    mute: on('mute'),
    fakebus: on('fakebus'),
    localassets: p.get('localassets') !== '0',   // ?localassets=0 => empty-manifest boot
    lvl: p.get('lvl') || null,
    seed: p.has('seed') ? (parseInt(p.get('seed'), 10) >>> 0) : null,
    raw: p,
  };
}