03-会话核心流与指令交互引擎

[data-cds="UserMessage"][data-author="self"][data-state="done"][data-text-size="md"]
 ├── AttachmentPreview (若随附附件，MessageAttachmentsFile 7.5rem 磁贴)
 ├── Bubble Container (yY: rounded-[--cds-message-bubble-radius] px-[--cds-message-bubble-pad-x] py-[--cds-message-bubble-pad-y])
 │    ├── .cds-user-message-body (正文，若超出 300px 施加 3rem 底部渐变蒙版)
 │    └── Show more / Show less (折叠切换按钮)
 └── MessageActions (悬浮工具条: Copy, Edit, Retry, 快捷漫游)

/* frame-shell-chrome-CAw-tYzh.js 官方声明 */
.cds-root [data-cds=UserMessage],
.cds-root [data-cds=AssistantMessage][data-variant=bubble],
.cds-root [data-cds=AssistantMessage][data-cds-bubble-stack] {
  --cds-message-bubble-radius: calc(var(--cds-radius) + calc(.25rem * var(--cds-rem-scale, 1)));
  --cds-message-bubble-pad-x: var(--cds-pad-lg);  /* 16px */
  --cds-message-bubble-pad-y: var(--cds-pad-md);  /* 12px */
  --cds-message-bubble-measure: 85%;
}

/* REA 取证：3rem 底部衰减蒙版 */
.cds-user-message-collapsed {
  max-height: 300px;
  overflow: hidden;
  mask-image: linear-gradient(to bottom, black calc(100% - 3rem), transparent);
  -webkit-mask-image: linear-gradient(to bottom, black calc(100% - 3rem), transparent);
}

/* frame-shell-chrome-CAw-tYzh.js 官方声明 */
.cds-root [data-cds=AssistantMessage] {
  --cds-assistant-message-text-inset: 4px;
  --cds-assistant-message-text-stop: clamp(0px, (100% - 384px) * .175, 56px);
}

/* 当正文内部嵌套卡片、数据表格、代码块或 MCP 面板时，微缩进立即精确归零 */
.cds-root [data-cds=AssistantMessage] :is(
  [data-cds=Card], [data-cds=Surface], [data-cds=Panel], [data-cds=Banner],
  [data-cds=Aside], [data-cds=Accordion], [data-cds=PreviewCard], [data-cds=Table],
  [data-cds=DataTable], [data-cds=AskUserQuestion], [data-cds=CommentCard],
  [data-cds=ChartContainer], [data-cds=PointChartContainer], [data-cds=FileDiff],
  [data-cds=UserMessage]
) {
  --cds-assistant-message-text-inset: 0px;
  --cds-assistant-message-text-stop: 0px;
}

stateDiagram-v2
    [*] --> Generating: 模型开始输出思考流
    Generating --> Generating: 3点波浪跳跃 (1.9s infinite cubic-bezier(.4, 0, .2, 1))
    Generating --> Generating: 展开互斥锁锁定 (isOpen=true, 禁止折叠防抖动)
    Generating --> Settled: 思考流终结
    Settled --> Collapsed: 用户点击折叠 (Grid 1fr -> 0fr, .2s)
    Collapsed --> Expanded: 用户再次点击 (Grid 0fr -> 1fr)

.timeline-quiet-dots {
  gap: 3.5px;
  display: inline-flex;
  position: relative;
  top: .26em;
}
.timeline-quiet-dots > span {
  background: var(--cds-clay, #d97757);
  opacity: 0;
  border-radius: 50%;
  width: 3px;
  height: 3px;
  animation: 1.9s cubic-bezier(.4, 0, .2, 1) infinite timeline-quiet-dot;
}
.timeline-quiet-dots > span:nth-child(2) { animation-delay: .15s; }
.timeline-quiet-dots > span:nth-child(3) { animation-delay: .3s; }

@keyframes timeline-quiet-dot {
  0%, 8%   { opacity: 0; transform: translateY(2px); }
  22%      { opacity: 1; transform: translateY(-2.5px); }
  36%, 70% { opacity: 1; transform: translateY(0); }
  90%, 100%{ opacity: 0; transform: translateY(0); }
}

.timeline-expand {
  grid-template-rows: 1fr;
  display: grid;
}
.timeline-expand > * {
  align-self: start;
  min-width: 0;
  min-height: 0;
}
@keyframes timeline-expand {
  0%   { opacity: 0; grid-template-rows: 0fr; }
  100% { opacity: 1; grid-template-rows: 1fr; }
}
.timeline-expand-enter {
  animation: .2s cubic-bezier(.19, 1, .22, 1) timeline-expand;
}

// shared-frame-BfjMqbuN.js 官方实现
function Lm() {
  return typeof window > "u" ? !1 : /Apple Computer/.test(window.navigator.vendor);
}
function Rm(e) {
  Fm = e; // 记录 compositionend 的精确 timeStamp
}
function zm(e) {
  (e.key !== "Enter" || e.shiftKey || e.altKey || e.keyCode === 229 || e.isComposing === !0 || e.nativeEvent?.isComposing === !0) && (Fm = Pm);
}
function Bm(e) {
  // 1. 常规合成守卫与 keyCode 229 拦截
  if (e.isComposing || e.keyCode === 229) {
    Fm = Pm;
    return !0;
  }
  if (Im.has(e)) return !0;
  // 2. WebKit 500ms 赛跑后卫：若在合成结束 500ms 内触发 Enter，判定为输入法确认虚假键击，予以强行拦截！
  if (Lm() && Math.abs(e.timeStamp - Fm) < 500) {
    Fm = Pm;
    return e.metaKey || e.ctrlKey ? !1 : (Im.add(e), !0);
  }
  return !1;
}

// 捕获阶段拦截 beforeinput 插入换行
var Vm = new Set(["insertParagraph", "insertLineBreak"]);
var Hm = ["beforeinput", "keydown", "keyup", "compositionstart", "focusout"];
function Um(e, t, n) {
  if (!Im.has(e)) return;
  let r = e,
      i = e => {
        if (e !== r) {
          for (let e of Hm) t.removeEventListener(e, i, { capture: !0 });
          e.type === "beforeinput" && "inputType" in e && typeof e.inputType == "string" && Vm.has(e.inputType) && (e.preventDefault(), n());
        }
      };
  for (let e of Hm) t.addEventListener(e, i, { capture: !0 });
}

// cb6930dae-BD0W5ZM9.js 官方实现
var qo = /`([^`\n]+)`/g,                // 内联代码段排除
    Qo = /(?<=^|\s)@([^\s`]+)/g,       // @ 提及捕获
    $o = /[.,;:!?'"\u3001\u3002\uFF0C\uFF1B\uFF1A\uFF01\uFF1F\u2026]+$/, // 尾随标点剥离正则（涵盖 CJK 全角符号）
    es = /\.[a-z][^/]*$/i,             // 文件后缀匹配
    rs = 1024;                         // 最大路径字符长度限制

function as(e, t, n) {
  if (!e.includes("@")) return is;
  let r = e.includes("](") ? [...e.matchAll(di)].map(e => [e.index, e.index + e[0].length]) : [],
      i = 0,
      a = [...t?.keys() ?? []],
      o = [],
      s = 0;
  for (let t of e.matchAll(Qo)) {
    // 路径合法性校验与 256 个文件引用熔断上限
    if (++s > 256) break;
    let c = tr(t[1])[0].replace($o, ""),
        l = c.replaceAll("\\", "/"),
        u = l.includes("/"),
        d = fi(u ? l : `./${l}`, n);
    if (d && es.test(d.path)) {
      o.push({ index: t.index, text: `@${c}`, fileRef: u ? d : { ...d, path: d.path.slice(2) } });
    }
  }
  return o;
}

// c05b96c7f-DklIyA-P.js 官方实现
function ws(e, t, n) {
  let r = [];
  for (let i of e) {
    if (i.type !== "tool_use" || !i.name || !Te(i, ["write"], n, i.name) || !i.id) continue;
    let e = t.get(i.id);
    if (!e || e.is_error) continue;
    let a = e.structured_content;
    r.push({ toolUseId: i.id, path: a?.path ?? "", version: a?.version ?? "" });
  }
  return r;
}

// 白名单 330 秒超时自动回收
function Ds(e) {
  for (let [t, n] of bs) e - n.clientAckedAtMs > 33e4 && bs.delete(t);
  for (let e of bs.keys()) {
    if (bs.size < Ss) break;
    bs.delete(e);
  }
}