const sleep = ms => new Promise(r => setTimeout(r, ms));
const propsOf = el => { for (const k of Object.keys(el)) if (k.startsWith('__reactProps$')) return el[k]; return null; };
const btn = (txt) => {
  for (const b of document.querySelectorAll('button')) if ((b.innerText||'').trim() === txt) return b;
  return null;
};
const out = {};
out.pourBefore = (await eda.pcb_PrimitivePour.getAll()).length;
out.pouredBefore = (await eda.pcb_PrimitivePoured.getAll()).length;
const b = btn('重建所有');
if (!b) return {err: '没找到 重建所有 按钮 —— 铺铜管理器是不是关了？', out};
// 先试 React 的 onClick，不行再 native
let fired = 'none';
const p = propsOf(b);
if (p && typeof p.onClick === 'function') {
  p.onClick({target: b, currentTarget: b, stopPropagation(){}, preventDefault(){}, nativeEvent:{}, button:0, detail:1});
  fired = 'react';
} else { b.click(); fired = 'native'; }
out.fired = fired;
// 等填充：每 2 s 看一次 poured 数，最多 90 s
for (let i = 0; i < 45; i++) {
  await sleep(2000);
  const n = (await eda.pcb_PrimitivePoured.getAll()).length;
  if (n > out.pouredBefore) { out.pouredAfter = n; out.waitedS = (i+1)*2; break; }
}
if (out.pouredAfter === undefined) {
  out.pouredAfter = (await eda.pcb_PrimitivePoured.getAll()).length;
  out.waitedS = 90;
}
return out;