chore: establish YCode replication baseline and TODO

scripts/e2e-cancel.mjs

@@ -0,0 +1,114 @@
+/**
+ * 端到端验证「取消」链路：发起长回合 → 中途点停止 → 校验状态与内核行为。
+ *
+ * 用法：node scripts/e2e-cancel.mjs <port>
+ */
+
+const port = Number(process.argv[2] ?? 9335)
+
+async function main() {
+  const list = await (await fetch(`http://127.0.0.1:${port}/json/list`)).json()
+  const page = list.filter((t) => t.type === 'page')[0]
+  if (!page) throw new Error('未找到页面')
+
+  const ws = new WebSocket(page.webSocketDebuggerUrl)
+  await new Promise((r, j) => {
+    const t = setTimeout(() => j(new Error('连接超时')), 8000)
+    ws.addEventListener('open', () => {
+      clearTimeout(t)
+      r()
+    })
+    ws.addEventListener('error', () => {
+      clearTimeout(t)
+      j(new Error('连接失败'))
+    })
+  })
+
+  const send = (method, params = {}) =>
+    new Promise((res, rej) => {
+      const id = Math.floor(Math.random() * 1e9)
+      const timer = setTimeout(() => rej(new Error(`超时 ${method}`)), 25000)
+      const h = (ev) => {
+        const m = JSON.parse(ev.data)
+        if (m.id === id) {
+          clearTimeout(timer)
+          ws.removeEventListener('message', h)
+          res(m.result)
+        }
+      }
+      ws.addEventListener('message', h)
+      ws.send(JSON.stringify({ id, method, params }))
+    })
+
+  const evaluate = (expression) => send('Runtime.evaluate', { expression, returnByValue: true })
+
+  // 1) 发起一个长回合
+  const fill = `(() => {
+    const el = document.querySelector('.composer__input');
+    const setter = Object.getOwnPropertyDescriptor(window.HTMLTextAreaElement.prototype, 'value').set;
+    setter.call(el, '写一篇 4000 字的软件架构设计文章，分十个章节，每章都要有完整内容。');
+    el.dispatchEvent(new Event('input', { bubbles: true }));
+    return 'OK';
+  })()`
+  await evaluate(fill)
+  const clicked = await evaluate(`(() => {
+    const btn = document.querySelector('.btn-send');
+    if (!btn || btn.disabled) return 'FAIL';
+    btn.click();
+    return 'SENT';
+  })()`)
+  console.log('发送:', clicked.result.value)
+  if (clicked.result.value !== 'SENT') process.exit(1)
+
+  // 2) 等出现停止按钮（说明回合在跑）
+  let runningSeen = false
+  for (let i = 0; i < 40; i++) {
+    await new Promise((r) => setTimeout(r, 500))
+    const probe = await evaluate(`JSON.stringify({ stop: !!document.querySelector('.btn-stop') })`)
+    if (JSON.parse(probe.result.value).stop) {
+      runningSeen = true
+      break
+    }
+  }
+  console.log('回合进行中:', runningSeen)
+  if (!runningSeen) {
+    console.log('⚠️ 未进入运行态，无法验证取消')
+    ws.close()
+    process.exit(1)
+  }
+
+  // 3) 让它跑一小会儿再取消
+  await new Promise((r) => setTimeout(r, 3000))
+  const cancel = await evaluate(`(() => {
+    const btn = document.querySelector('.btn-stop');
+    if (!btn) return 'NO_STOP';
+    btn.click();
+    return 'CANCELLED';
+  })()`)
+  console.log('点击停止:', cancel.result.value)
+
+  // 4) 等待终态
+  let final = null
+  for (let i = 0; i < 40; i++) {
+    await new Promise((r) => setTimeout(r, 700))
+    const probe = await evaluate(`JSON.stringify({
+      stopGone: !document.querySelector('.btn-stop'),
+      sendBack: !!document.querySelector('.btn-send'),
+      status: [...document.querySelectorAll('.msg--assistant .msg__status')].map((n) => n.textContent),
+      contentLen: [...document.querySelectorAll('.msg--assistant .msg__content')].pop()?.textContent.length ?? 0
+    })`)
+    final = JSON.parse(probe.result.value)
+    if (final.stopGone && final.sendBack) break
+  }
+
+  console.log('终态:', JSON.stringify(final))
+  const ok = final.sendBack && final.stopGone
+  console.log(ok ? '\n✅ 取消链路：停止按钮消失、发送按钮恢复' : '\n❌ 取消链路未恢复正常')
+  ws.close()
+  process.exit(ok ? 0 : 1)
+}
+
+main().catch((e) => {
+  console.error('失败：', e.message)
+  process.exit(1)
+})