docs: translate remaining READMEs

packages/client/web-react/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: 7cc80f22bd5527838288d11c819e81b7ec4d17c4
+README.zh.md: ec7143db9a1fe97145a07a0a1fde45c9268c2425

packages/client/web-react/README.md

@@ -1,5 +1,7 @@
 # @deepseek-ai/dsh-client-web-react
 
+English | [中文](README.zh.md)
+
 Shell-side React glue for the slot terminal design: createSlotRenderer (the SlotRenderer implementation the shell installs into the runtime SlotsService), SessionProvider (framework-wired render prop, also injected as a standard seat to entries declaring session-scope children), bindSnapshotSelector (the one hook constructor — hosts and engines traffic in bare observable sources; every hook binds here, cached per source), useInvoke. Chain-slot outlets run the registered selectors in chain order at render time and mount only the elected entry, its select return joining the props as `matched`; the `renderSlotChain` binding is per-entry cached like `renderSlot`. The snapshot-store engine and defineStore live in runtime (store relocation); business plugins depend on ui-slots types only, never on this package.
 
 ## Model Experience

packages/client/web-react/README.zh.md

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+# @deepseek-ai/dsh-client-web-react
+
+[English](README.md) | 中文
+
+slot 终端设计的外壳侧 React 胶水：createSlotRenderer（外壳安装到运行时 SlotsService 的 SlotRenderer 实现）、SessionProvider（框架接线的 render prop，也作为标准 seat 注入到声明会话 scope 子项的配置项）、bindSnapshotSelector（唯一的 hook 构造器：主机与引擎只传递裸 observable source；每个 hook 在此绑定，并按 source 缓存）、useInvoke。链式 slot outlet 在渲染时按链顺序运行已注册 selector，只挂载被选中的配置项，其 select 返回值以 `matched` 加入 props；`renderSlotChain` binding 与 `renderSlot` 一样按配置项缓存。快照 store 引擎与 defineStore 位于 runtime（store 已迁移）；业务插件只依赖 ui-slots 类型，绝不依赖该包。
+
+## 模型体验
+
+无。ctx↔React 机制完全在浏览器中运行；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
+
+- **persist 中间件会损坏原始值状态 store**：保存时它会对状态执行对象展开，因此 `SnapshotStore<string>` 往返后会变成字符 map；引擎改为自行实现持久化（见 `attachPersistence`）。
+- **`UseSession` 有意保持宽泛（`object` 快照）**：依赖方向（runtime → web-react，绝不反向）使真实 `ConversationSnapshot` 类型不可访问；会话 slot 消费方在其边界处缩窄一次。
+- **renderSlot 是唯一的 P-I 形式**：没有 Suspense，也没有逐配置项惰性加载；渐进式渲染表层会随其独立项目回归。