docs: translate remaining READMEs

packages/client/ui-trajectory/README.i18n.yaml

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+# Bilingual-pair consistency record (docs/i18n/README.md): the git blob hash of each
+# side as of the last confirmed-consistent state. Both languages carry equal authority;
+# after editing either side, bring the other along and re-record with:
+#   pnpm run verify-translation-pairing --write
+README.md: 9e7dee8d5572baad13d7598d1fbde7b042dd5ab4
+README.zh.md: da14d5265c16acb4e75d21bc445ef9702c83e697

packages/client/ui-trajectory/README.md

@@ -1,5 +1,7 @@
 # @deepseek-ai/dsh-client-ui-trajectory
 
+English | [中文](README.zh.md)
+
 Trajectory turn-list chrome (sticky Turn / Message·Step groups / step cells) plus Waterfall placeholder; the pure-consumer minimal plugin exemplar (registers two view tabs into the conversation's `'conversation.view'` slot ring, provides no service, declares no Context merge). Contract: api-contracts v3 §8.
 
 ## Model Experience

packages/client/ui-trajectory/README.zh.md

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+# @deepseek-ai/dsh-client-ui-trajectory
+
+[English](README.md) | 中文
+
+轨迹轮次列表 chrome（吸顶 Turn／Message·Step 分组／步骤单元格）及 Waterfall 占位符；这是纯消费方最小插件范例（向会话的 `'conversation.view'` slot 环注册两个视图标签页，不提供服务，也不声明 Context 合并）。契约：api-contracts v3 §8。
+
+## 模型体验
+
+无。轨迹视图在浏览器中渲染会话数据；这里没有任何内容进入模型请求。
+
+#### KV Cache 影响
+
+无；该包既不组装也不发送提供方请求。
+
+## 已知限制与暂缓事项
+
+- **进行中的 Time 保持空白**：`partial`／`runningCalls` 行在实时钟策略落地前渲染为 `—`；选中样式只在本地生效（未连接到聊天详情）；锚点深链接仍暂缓实现。