refactor(e2b): compose portable runtime consumers

packages/code-runtime/code-runtime-worker/README.i18n.yaml

@@ -2,5 +2,5 @@
 # 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 packages/code-runtime/code-runtime-worker/README.md
-README.md: 4b14c6fad5d1e491faeb54c9cb0e4403c8e2d8dd
-README.zh.md: c522917835b562cf7648d8bc78f0315b7c52d2d2
+README.md: 35196a0b4fba5cd0388246a70354308ece08b39f
+README.zh.md: 49871c38c540addd06f5d24793ae00b45e2f8bb0

packages/code-runtime/code-runtime-worker/README.md

@@ -46,7 +46,7 @@ No direct invalidation; the named consumer owns any request-prefix changes.
 
 ## Known Limitations and Deferred Work
 
-- **OS processes a program spawns survive this backend's termination** — `worker.terminate()` ends only the thread; deployments needing remote process-group cleanup can select the E2B backend, whose separate limitations still apply.
+- **OS processes a program spawns survive termination** — `worker.terminate()` ends the thread only; deployments requiring process-tree cleanup select `dsh-code-runtime-subprocess`, whose mounted subprocess provider owns that cleanup.
 - **Type-strip rides Node's experimental `stripTypeScriptTypes` API** — the relied-on behavior is pinned by unit tests, with amaro/sucrase as named drop-in replacements if it shifts.
 - **`computeMs` expiry can overshoot by up to one poll interval** — busy time is sampled every 25 ms (an internal constant, deliberately not config).
 - **Programs get a five-method `console` shim** (`log`/`info`/`warn`/`error`/`debug`) — deliberately not Node's full console surface.

packages/code-runtime/code-runtime-worker/README.zh.md

@@ -46,7 +46,7 @@ SDK 接口是默认／具名 `WorkerCodeRuntime` 类与 `Config`。可操作的
 
 ## 已知限制与暂缓工作
 
-- **程序 spawn 的 OS 进程在该后端终止后仍会存活**：`worker.terminate()` 只结束线程；需要清理远程进程组的部署可以选择 E2B 后端，但该后端自身的限制仍然适用。
+- **程序 spawn 的 OS 进程在终止后仍会存活**：`worker.terminate()` 只结束线程；需要清理进程树的部署应选择 `dsh-code-runtime-subprocess`，由其挂载的子进程提供方负责该清理。
 - **类型剥离依赖 Node 的实验性 `stripTypeScriptTypes` API**：依赖的行为由单元测试固定；如其发生变化，amaro／sucrase 是已经点名的直接替代品。
 - **`computeMs` 到期最多可能超过一个轮询间隔**：系统每 25 ms 采样一次忙碌时间（内部常量，有意不做成配置）。
 - **程序获得一个含 5 种方法的 `console` shim**（`log`／`info`／`warn`／`error`／`debug`）：有意不提供 Node 的完整 console 接口。