feat(pwsh): render pwsh calls as bash-shaped terminal cards in the Web UI

A completed pwsh foreground call now presents as the bash tool's terminal
card with the parsed exit-status pill instead of a generic console fence,
and the collapsed row classifies as the shell family (Pwsh title). The
marker-to-exit-status parse moves from dsh-tool-bash's private render
module into the @deepseek-ai/dsh-bash seam so both shell tools share one
inverse of the marker contract (the bash-env precedent). The Web UI needs
no per-tool code: the terminal-card bridge maps any card:'terminal' view.

Coverage: dsh-bash owns the parse edge cases; the tool-pwsh presenter
suite mirrors tool-bash's; the client row-model suite pins the Pwsh shell
row; the new keyless pwsh-terminal web lane seeds an authored session,
presents it through the real tool on replay, and pins the card golden.

TUI is out of scope: the TUI package was removed (ed30088adb), so the Web
surface is the only UI the gap affected; the roadmap proposal's stage 2
is updated accordingly.

packages/bash/bash/README.zh.md

@@ -35,6 +35,8 @@
 
 `stdin` 与普通 `env` 由同进程插件（hooks 桥接、原生插件）设置，用于向 hook 命令提供其 JSON payload 和 `CLAUDE_PROJECT_DIR`／`CLAUDE_PLUGIN_ROOT` 值。`dshEnv` 是受类型限制、仅允许受管 key 的独立受信任 overlay；导出的 `DSH_ENV_PREFIX` 是该 namespace、其 `DshEnvironmentKey` 模板类型、执行器清理、注册表验证、派生内置名称与模型指引的统一来源。模型 bash 使用 `ctx.bashEnv` 收集的当前快照。实现会移除继承的受管 key，再在普通 `env` 之后合并 `dshEnv`，因此省略的当前事实不会回退到陈旧环境状态，`env` 条目也无法顶掉受管值。面向模型的工具不将这三者中的任何一个公开为参数。这三者在已解析 spec 上仍然可选；缺失表示没有输入／overlay。详见 [bash-stdin-env Agent Note（agent 决策记录）](../../../.agents/notes/implemented/architecture/2026-06-30-bash-stdin-env-trusted-plugin-surface.md) 与 [会话环境 Agent Note](../../../.agents/notes/implemented/feature/2026-07-10-agent-session-identity-and-log-location.md)。
 
+导出的 `parseExitStatus`（连同 `ParsedExitStatus`）是 shell 工具共享渲染契约的另一半：`dsh-tool-bash` 的 `renderResult` 与 `dsh-tool-pwsh` 的 `renderPwshResult` 追加的 `[exit code: N]`／`[killed by signal: X]` marker 的逆解析。两个工具的 `presentResult` 都用它把渲染文本拆成 terminal 卡的输出正文与其退出状态 pill；它放在 seam 上，两个工具便永远不会在 marker 契约上漂移。
+
 ## 模型体验
 
 通过 `dsh-tool-bash` 间接影响；该工具会将执行器输出与沙箱事实转为指引和保留的工具结果 token。