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[REQ-125][CODE] 实现 alpha 时间线消息流容器与文本类组件 #543

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Description

@jinjunnn

Parent requirement: #538
基线:§④C5 + §③不变量 I1–I5

  • 负责 AC:AC3(消息流部分)
  • 边界:alpha-ui/session-timeline/**(新):容器/虚拟化/用户气泡/助手 Markdown/推理块/分隔/流式光标;SDK 数据源;Markdown 走既有安全渲染管线
  • out-of-scope:工具卡与特种卡(C6)、dock(C7)
  • 退出条件:代表性会话在 alpha 时间线正确渲染,零上游 session DOM 断言,测试绿

Activity

  1. jinjunnn commented on Jul 24, 2026

    @jinjunnn
    OwnerAuthor

    边界增补(2026-07-24 owner 裁决):①会话内空态形态归本票(设计帧已补入 conversation-timeline 活稿);②docs/audits/2026-06-28-timeline-overhaul.md 的 40 构件清单转为本票+#544 的覆盖对照表——原 CSS/INJECT 钩子口径废止,一律 alpha 组件原生实现,禁止任何上游选择器依赖。

  2. jinjunnn commented on Jul 24, 2026

    @jinjunnn
    OwnerAuthor

    基线 rev2 收窄口径(0ce5cef §④C5):本票 = 行模型/虚拟化/滚动锚定 + 文本类输出(用户气泡/助手 Markdown/推理块/分隔/流式)。工具卡与交互卡归 C6(#544)。

  3. self-assigned this
    on Jul 24, 2026
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