diff --git a/packages/test-support/client-runtime/README.i18n.yaml b/packages/test-support/client-runtime/README.i18n.yaml
index addb502c8a..534cc2596a 100644
--- a/packages/test-support/client-runtime/README.i18n.yaml
+++ b/packages/test-support/client-runtime/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/test-support/client-runtime/README.md
-README.md: e32f7858b32e15e5200f9a986cb88e29309c44cb
-README.zh.md: 1b7da6f38723607dedd5eb16a15ade0b974ed135
+README.md: 20f6454012d0d8e4c78d9a0ea0df960d22a71f5a
+README.zh.md: d9c6888f17df3f37e699bb6be0f7ee44ce82d373
diff --git a/packages/test-support/client-runtime/README.md b/packages/test-support/client-runtime/README.md
index e32f7858b3..20f6454012 100644
--- a/packages/test-support/client-runtime/README.md
+++ b/packages/test-support/client-runtime/README.md
@@ -87,7 +87,7 @@ The [generic Remote proxy](../remote-mock/README.md#remote-proxy) supports every
 
 ### Roster and startup behavior
 
-`webApp` is the `web` profile's browser roster, read when the assembly entry is first imported from its bundles (`dsh-base`, then `dsh-web-app`) as the launcher composes them, except that a patch matching nothing throws here where the launcher warns: each bundle's `dsh.bundle.patch` list is parsed with the include plugin's YAML dialect and composed by its `applyEntryPatches`, and every enabled row whose package declares `dsh.client.platform === 'web'` becomes a row carrying that declaration's `inject` and `immediately`; `bundleRoster(bundles)` does the same for any bundle list. Nothing is copied from the bundles, so a bundle change is visible at the next test run. `webApp.closure(names)` keeps the named rows plus everything they inject, transitively (the rows a spec needs to boot those plugins as the bundle composes them), `webApp.pick(names)` and `webApp.without(names)` cut it down by hand, all three throw on unknown names, and `ClientRoster.of(rows)` builds one inline. `remoteDefaultResponses` holds default responses for exactly the Remote endpoints the roster calls while booting with no sessions, no workspaces, and default settings; a spec layers its own `RemoteTable` on top with `mock.load(table)`, and any call without a rule fails the test at `dispose()` through `mock.assertNoUnmatched()`. `mount` requires a roster that provides `uiRenderer`; `start` fails loud otherwise instead of returning an empty container. `client.connection` is the roster's Connection service (no `Context` augmentation declares it), and `connectTimeoutMs` bounds the readiness wait, whose failure message lists the mock log. `reload(name)` rebuilds one Loader entry the way client-hmr does (registry-first teardown, then `entry.refresh()`), under the worker's boot turn with this client's carrier installed so a rebuilt `connection` row reads its own mock; `unload(name)` removes it; `flush()` settles React inside `act`. jsdom implements neither `EventSource` (client-hmr opens one at apply) nor `ResizeObserver` (layout components observe size at mount), so `start` installs inert stubs for whichever global is absent and `dispose` removes exactly those — a jsdom gap, not a product requirement. The `@deepseek-ai/dsh-api-remotes` row is dropped from every roster: its generated Remote clients exist only in built `lib/`, and `remote.<ns>` is what the tier replaces anyway. `start` instead provides one contract-free proxy per `remote.<ns>` service the roster injects (plus the namespaces the mock has rules for at that point; a namespace first registered later has no proxy); `ctx.remote.<ns>.<method>(...args)` becomes a call on the endpoint `<ns>/<method>` carrying the positional args, a stream when the mock registered a `stream()` script and a unary call otherwise, with the generated client's outcome folding (`gateway/internal` for carrier throws, `gateway/cancelled` on abort). An endpoint without a rule is still dispatched, so the mock logs it and `dispose()` fails the test.
+`webApp` is the `web` profile's browser roster, read when the assembly entry is first imported from its bundles (`dsh-base`, then `dsh-web-app`) as the launcher composes them, except that a patch matching nothing throws here where the launcher warns: each bundle's `dsh.bundle.patch` list is parsed with the include plugin's YAML dialect and composed by its `applyEntryPatches`, and every enabled row whose package declares `dsh.client.platform === 'web'` becomes a row carrying that declaration's `inject` and `immediately`; `bundleRoster(bundles)` does the same for any bundle list. Nothing is copied from the bundles, so a bundle change is visible at the next test run. `webApp.closure(names)` keeps the named rows plus everything they inject, transitively (the rows a spec needs to boot those plugins as the bundle composes them), `webApp.pick(names)` and `webApp.without(names)` cut it down by hand, all three throw on unknown names, and `ClientRoster.of(rows)` builds one inline. `remoteDefaultResponses` holds default responses for exactly the Remote endpoints the roster calls while booting with no sessions, no workspaces, and default settings; a spec layers its own `RemoteTable` on top with `mock.load(table)`, and any call without a rule fails the test at `dispose()` through `mock.assertNoUnmatched()`. `mount` requires a roster that provides `uiRenderer`; `start` fails loud otherwise instead of returning an empty container. `client.connection` is the roster's Connection service (no `Context` augmentation declares it), and `connectTimeoutMs` bounds the readiness wait, whose failure message lists the mock log. `reload(name)` rebuilds one Loader entry the way client-hmr does (registry-first teardown, then `entry.refresh()`), under the worker's boot turn with this client's carrier installed so a rebuilt `connection` row reads its own mock; `unload(name)` removes it and waits for plugin cleanup; `flush()` settles React inside `act`. jsdom implements neither `EventSource` (client-hmr opens one at apply) nor `ResizeObserver` (layout components observe size at mount), so `start` installs inert stubs for whichever global is absent and `dispose` removes exactly those — a jsdom gap, not a product requirement. The `@deepseek-ai/dsh-api-remotes` row is dropped from every roster: its generated Remote clients exist only in built `lib/`, and `remote.<ns>` is what the tier replaces anyway. `start` instead provides one contract-free proxy per `remote.<ns>` service the roster injects (plus the namespaces the mock has rules for at that point; a namespace first registered later has no proxy); `ctx.remote.<ns>.<method>(...args)` becomes a call on the endpoint `<ns>/<method>` carrying the positional args, a stream when the mock registered a `stream()` script and a unary call otherwise, with the generated client's outcome folding (`gateway/internal` for carrier throws, `gateway/cancelled` on abort). An endpoint without a rule is still dispatched, so the mock logs it and `dispose()` fails the test.
 
 ### When to use it
 
diff --git a/packages/test-support/client-runtime/README.zh.md b/packages/test-support/client-runtime/README.zh.md
index 1b7da6f387..d9c6888f17 100644
--- a/packages/test-support/client-runtime/README.zh.md
+++ b/packages/test-support/client-runtime/README.zh.md
@@ -87,7 +87,7 @@ test('registers into the sidebar', async ({ remote, start }) => {
 
 ### Roster 与启动行为
 
-`webApp` 是 `web` profile 的浏览器 roster，首次 import 装配入口时从它的 bundle（先 `dsh-base`、再 `dsh-web-app`）按启动器的方式现读，只是匹配不到任何行的补丁在这里抛错、启动器只警告：每个 bundle 的 `dsh.bundle.patch` 列表用 include 插件的 YAML 方言解析、用它的 `applyEntryPatches` 合成，每个未禁用且其包声明 `dsh.client.platform === 'web'` 的行成为一行，带上该声明的 `inject` 与 `immediately`；`bundleRoster(bundles)` 对任意 bundle 列表做同样的事。没有任何东西从 bundle 拷贝出来，bundle 一改下次跑测试就能看见。`webApp.closure(names)` 保留点名的行及其传递注入的全部行（即按 bundle 组合方式起这些插件所需的行），`webApp.pick(names)` 与 `webApp.without(names)` 手工裁剪，三者都对未知名字抛错，`ClientRoster.of(rows)` 内联构造一份。`remoteDefaultResponses` 是 roster 在没有 session、没有 workspace、默认设置下启动时恰好会打的那些 Remote 端点的默认响应；测试用 `mock.load(table)` 在其上叠加自己的 `RemoteTable`，任何没有规则的调用都会在 `dispose()` 时经 `mock.assertNoUnmatched()` 让测试失败。`mount` 要求 roster 提供 `uiRenderer`；否则 `start` 响亮失败而不是返回一个空容器。`client.connection` 是 roster 的 Connection 服务（没有任何 `Context` 增强声明它），`connectTimeoutMs` 限定等就绪的时长，超时消息列出 mock log。`reload(name)` 按 client-hmr 的方式重建一个 Loader entry（先拆 registry，再 `entry.refresh()`），并在 worker 的启动轮次内装上本客户端的载体，重建的 `connection` 行因此读到自己的 mock；`unload(name)` 移除它；`flush()` 在 `act` 内让 React 落定。jsdom 既没有 `EventSource`（client-hmr 在 apply 时打开一个）也没有 `ResizeObserver`（布局组件挂载时观察尺寸），所以 `start` 对缺失的全局装惰性桩、`dispose` 只移除它装的那些——这是 jsdom 的缺口，不是产品需求。每个 roster 里的 `@deepseek-ai/dsh-api-remotes` 行都会被去掉：它生成的 Remote 客户端只存在于构建后的 `lib/`，而 `remote.<ns>` 正是本档要替掉的东西。`start` 改为给 roster 注入的每个 `remote.<ns>` 服务（加上此刻 mock 登记过规则的命名空间；之后才首次登记的命名空间没有代理）提供一个无契约代理；`ctx.remote.<ns>.<method>(...args)` 变成对端点 `<ns>/<method>` 的调用，携带位置参数，mock 登记了 `stream()` 脚本的走流、否则走一元，并沿用生成客户端的结果折叠（载体抛错折成 `gateway/internal`，中止折成 `gateway/cancelled`）。没有规则的端点照样发出，所以 mock 会记下它、`dispose()` 让测试失败。
+`webApp` 是 `web` profile 的浏览器 roster，首次 import 装配入口时从它的 bundle（先 `dsh-base`、再 `dsh-web-app`）按启动器的方式现读，只是匹配不到任何行的补丁在这里抛错、启动器只警告：每个 bundle 的 `dsh.bundle.patch` 列表用 include 插件的 YAML 方言解析、用它的 `applyEntryPatches` 合成，每个未禁用且其包声明 `dsh.client.platform === 'web'` 的行成为一行，带上该声明的 `inject` 与 `immediately`；`bundleRoster(bundles)` 对任意 bundle 列表做同样的事。没有任何东西从 bundle 拷贝出来，bundle 一改下次跑测试就能看见。`webApp.closure(names)` 保留点名的行及其传递注入的全部行（即按 bundle 组合方式起这些插件所需的行），`webApp.pick(names)` 与 `webApp.without(names)` 手工裁剪，三者都对未知名字抛错，`ClientRoster.of(rows)` 内联构造一份。`remoteDefaultResponses` 是 roster 在没有 session、没有 workspace、默认设置下启动时恰好会打的那些 Remote 端点的默认响应；测试用 `mock.load(table)` 在其上叠加自己的 `RemoteTable`，任何没有规则的调用都会在 `dispose()` 时经 `mock.assertNoUnmatched()` 让测试失败。`mount` 要求 roster 提供 `uiRenderer`；否则 `start` 响亮失败而不是返回一个空容器。`client.connection` 是 roster 的 Connection 服务（没有任何 `Context` 增强声明它），`connectTimeoutMs` 限定等就绪的时长，超时消息列出 mock log。`reload(name)` 按 client-hmr 的方式重建一个 Loader entry（先拆 registry，再 `entry.refresh()`），并在 worker 的启动轮次内装上本客户端的载体，重建的 `connection` 行因此读到自己的 mock；`unload(name)` 移除它并等待插件清理完成；`flush()` 在 `act` 内让 React 落定。jsdom 既没有 `EventSource`（client-hmr 在 apply 时打开一个）也没有 `ResizeObserver`（布局组件挂载时观察尺寸），所以 `start` 对缺失的全局装惰性桩、`dispose` 只移除它装的那些——这是 jsdom 的缺口，不是产品需求。每个 roster 里的 `@deepseek-ai/dsh-api-remotes` 行都会被去掉：它生成的 Remote 客户端只存在于构建后的 `lib/`，而 `remote.<ns>` 正是本档要替掉的东西。`start` 改为给 roster 注入的每个 `remote.<ns>` 服务（加上此刻 mock 登记过规则的命名空间；之后才首次登记的命名空间没有代理）提供一个无契约代理；`ctx.remote.<ns>.<method>(...args)` 变成对端点 `<ns>/<method>` 的调用，携带位置参数，mock 登记了 `stream()` 脚本的走流、否则走一元，并沿用生成客户端的结果折叠（载体抛错折成 `gateway/internal`，中止折成 `gateway/cancelled`）。没有规则的端点照样发出，所以 mock 会记下它、`dispose()` 让测试失败。
 
 ### 何时使用
 
diff --git a/packages/test-support/client-runtime/src/assembly/test-client.ts b/packages/test-support/client-runtime/src/assembly/test-client.ts
index 7e26d9bbc8..fd99de38fd 100644
--- a/packages/test-support/client-runtime/src/assembly/test-client.ts
+++ b/packages/test-support/client-runtime/src/assembly/test-client.ts
@@ -303,11 +303,14 @@ export class TestClient {
   }
 
   /**
-   * Remove one Loader entry.
+   * Remove one Loader entry and wait for its plugin cleanup.
    * @param name - package name of the row.
    */
   async unload(name: string): Promise<void> {
-    await this.ctx.loader.remove(this.entryOf(name).id)
+    const entry = this.entryOf(name)
+    const disposal = entry.fiber?.dispose()
+    this.ctx.loader.remove(entry.id)
+    await disposal
   }
 
   /**
diff --git a/packages/test-support/client-runtime/tests/assembly-test-client.client.spec.ts b/packages/test-support/client-runtime/tests/assembly-test-client.client.spec.ts
index 788c640b7f..b4d28d9fc6 100644
--- a/packages/test-support/client-runtime/tests/assembly-test-client.client.spec.ts
+++ b/packages/test-support/client-runtime/tests/assembly-test-client.client.spec.ts
@@ -136,7 +136,24 @@ describe('TestClient (jsdom)', () => {
     await client.reload(SIDEBAR)
     await client.flush()
     expect(client.ctx.slots.entries(SIDEBAR_SETTINGS)).toHaveLength(1)
-    await client.unload(SIDEBAR)
+    const cleanupStarted = Promise.withResolvers<undefined>()
+    const releaseCleanup = Promise.withResolvers<undefined>()
+    const sidebar = [...client.ctx.loader.entries()].find(entry => entry.options.name === SIDEBAR)!
+    sidebar.fiber!.ctx.effect(() => async () => {
+      cleanupStarted.resolve(undefined)
+      await releaseCleanup.promise
+    })
+    let unloaded = false
+    const unloading = client.unload(SIDEBAR).then(() => { unloaded = true })
+    try {
+      await cleanupStarted.promise
+      await client.flush()
+      expect(unloaded).toBe(false)
+    } finally {
+      releaseCleanup.resolve(undefined)
+      await unloading
+    }
+    expect(unloaded).toBe(true)
     await client.flush()
     expect(client.ctx.slots.entries(SIDEBAR_SETTINGS)).toHaveLength(0)
     await expect(client.reload(SIDEBAR)).rejects.toThrow(`no Loader entry named ${SIDEBAR}`)