diff --git a/apps/web/tests/expected/plugin-install-registry/fastest-default.expected.md b/apps/web/tests/expected/plugin-install-registry/fastest-default.expected.md
index ff8c008df0..91c3574956 100644
--- a/apps/web/tests/expected/plugin-install-registry/fastest-default.expected.md
+++ b/apps/web/tests/expected/plugin-install-registry/fastest-default.expected.md
@@ -1,10 +1,10 @@
 - group "从哪个 npm 源下载插件":
-  - radio "npm 官方源（registry.npmjs.org）"
-  - text: npm 官方源（registry.npmjs.org）
-  - radio "中国大陆镜像源（registry.npmmirror.com）" [checked]
-  - text: 中国大陆镜像源（registry.npmmirror.com）
+  - radio "npm 官方源 registry.npmjs.org"
+  - text: npm 官方源 registry.npmjs.org
+  - radio "中国大陆镜像源 registry.npmmirror.com" [checked]
+  - text: 中国大陆镜像源 registry.npmmirror.com
   - radio "自定义地址"
   - text: 自定义地址
-  - textbox "自定义地址" [disabled]:
+  - textbox "自定义地址":
     - /placeholder: https://npm.example.com/
-  - text: 公司内网或私有 npm 源；需要登录的源，把凭据放在本机的 ~/.npmrc 里
+  - text: 填写内网或私有 npm 源地址，以 http:// 或 https:// 开头。若为需要登录的源，请把凭据放在本机的 ~/.npmrc 里。
diff --git a/apps/web/tests/expected/plugin-install-registry/official-default.expected.md b/apps/web/tests/expected/plugin-install-registry/official-default.expected.md
index 9c219b83e0..944fe05716 100644
--- a/apps/web/tests/expected/plugin-install-registry/official-default.expected.md
+++ b/apps/web/tests/expected/plugin-install-registry/official-default.expected.md
@@ -1,10 +1,10 @@
 - group "从哪个 npm 源下载插件":
-  - radio "npm 官方源（registry.npmjs.org）" [checked]
-  - text: npm 官方源（registry.npmjs.org）
-  - radio "中国大陆镜像源（registry.npmmirror.com）"
-  - text: 中国大陆镜像源（registry.npmmirror.com）
+  - radio "npm 官方源 registry.npmjs.org" [checked]
+  - text: npm 官方源 registry.npmjs.org
+  - radio "中国大陆镜像源 registry.npmmirror.com"
+  - text: 中国大陆镜像源 registry.npmmirror.com
   - radio "自定义地址"
   - text: 自定义地址
-  - textbox "自定义地址" [disabled]:
+  - textbox "自定义地址":
     - /placeholder: https://npm.example.com/
-  - text: 公司内网或私有 npm 源；需要登录的源，把凭据放在本机的 ~/.npmrc 里
+  - text: 填写内网或私有 npm 源地址，以 http:// 或 https:// 开头。若为需要登录的源，请把凭据放在本机的 ~/.npmrc 里。
diff --git a/apps/web/tests/expected/plugin-install-registry/picker.expected.md b/apps/web/tests/expected/plugin-install-registry/picker.expected.md
index ff8c008df0..91c3574956 100644
--- a/apps/web/tests/expected/plugin-install-registry/picker.expected.md
+++ b/apps/web/tests/expected/plugin-install-registry/picker.expected.md
@@ -1,10 +1,10 @@
 - group "从哪个 npm 源下载插件":
-  - radio "npm 官方源（registry.npmjs.org）"
-  - text: npm 官方源（registry.npmjs.org）
-  - radio "中国大陆镜像源（registry.npmmirror.com）" [checked]
-  - text: 中国大陆镜像源（registry.npmmirror.com）
+  - radio "npm 官方源 registry.npmjs.org"
+  - text: npm 官方源 registry.npmjs.org
+  - radio "中国大陆镜像源 registry.npmmirror.com" [checked]
+  - text: 中国大陆镜像源 registry.npmmirror.com
   - radio "自定义地址"
   - text: 自定义地址
-  - textbox "自定义地址" [disabled]:
+  - textbox "自定义地址":
     - /placeholder: https://npm.example.com/
-  - text: 公司内网或私有 npm 源；需要登录的源，把凭据放在本机的 ~/.npmrc 里
+  - text: 填写内网或私有 npm 源地址，以 http:// 或 https:// 开头。若为需要登录的源，请把凭据放在本机的 ~/.npmrc 里。
diff --git a/apps/web/tests/plugin-install-registry.e2e.ts b/apps/web/tests/plugin-install-registry.e2e.ts
index 043dd70764..54a1dbe3a1 100644
--- a/apps/web/tests/plugin-install-registry.e2e.ts
+++ b/apps/web/tests/plugin-install-registry.e2e.ts
@@ -75,7 +75,7 @@ it.each(['https://registry.npmjs.org/', MIRROR])('selects the fastest responding
       expect(await page.getByRole('radio').count()).toBe(0)
       await registryToggle.click()
       const options = page.getByRole('group', { name: '从哪个 npm 源下载插件', exact: true })
-      const mirror = options.getByRole('radio', { name: '中国大陆镜像源（registry.npmmirror.com）', exact: true })
+      const mirror = options.getByRole('radio', { name: '中国大陆镜像源 registry.npmmirror.com', exact: true })
       await expect.poll(async () => (await readFile(requestLog, 'utf8')).trim().split('\n').filter(Boolean)).toHaveLength(2)
       const pingUrls = (await readFile(requestLog, 'utf8')).trim().split('\n').sort()
       expect(pingUrls).toEqual(['https://registry.npmjs.org/-/ping', 'https://registry.npmmirror.com/-/ping'].map(url => JSON.stringify(url)))
@@ -84,7 +84,7 @@ it.each(['https://registry.npmjs.org/', MIRROR])('selects the fastest responding
         await compareOrRefreshGolden(fileURLToPath(new URL('./expected/plugin-install-registry/fastest-default.expected.md', import.meta.url)),
           await captureStableAria(page, '[data-install-registry]', scaffold.workspaceCwd), webSnapshotMode())
       } else {
-        expect(await options.getByRole('radio', { name: 'npm 官方源（registry.npmjs.org）', exact: true }).isChecked()).toBe(true)
+        expect(await options.getByRole('radio', { name: 'npm 官方源 registry.npmjs.org', exact: true }).isChecked()).toBe(true)
         await compareOrRefreshGolden(fileURLToPath(new URL('./expected/plugin-install-registry/official-default.expected.md', import.meta.url)),
           await captureStableAria(page, '[data-install-registry]', scaffold.workspaceCwd), webSnapshotMode())
         await mirror.click()
diff --git a/packages/client/ui-plugin-manager/src/client/PluginManagerPage.module.css b/packages/client/ui-plugin-manager/src/client/PluginManagerPage.module.css
index 37ff54cc9f..505ae1e096 100644
--- a/packages/client/ui-plugin-manager/src/client/PluginManagerPage.module.css
+++ b/packages/client/ui-plugin-manager/src/client/PluginManagerPage.module.css
@@ -700,9 +700,9 @@
   margin: 0;
   padding: 8px;
   border: 0;
-  /* Keep an opaque surface behind the registry form controls. */
-  --dsw-menu-surface-fill: var(--dsw-alias-bg-layer-2);
-  --dsw-menu-backdrop-filter: none;
+  /* An opaque layer keeps the registry form controls readable over the dialog. */
+  background: var(--dsw-alias-bg-layer-2);
+  border-radius: var(--dsw-radius-lg);
   --dsw-elevation-stroke-color: var(--dsw-alias-border-l1);
   box-shadow: var(--dsw-elevation-prominent);
   min-width: 0;
diff --git a/packages/client/ui-plugin-manager/src/client/PluginManagerPage.tsx b/packages/client/ui-plugin-manager/src/client/PluginManagerPage.tsx
index df9a064490..2dfbb1afee 100644
--- a/packages/client/ui-plugin-manager/src/client/PluginManagerPage.tsx
+++ b/packages/client/ui-plugin-manager/src/client/PluginManagerPage.tsx
@@ -16,7 +16,7 @@ import {
   Button, IconCheckCircleFillRegular, IconChevronDownOutlineRegular, IconChevronLeftOutlineMedium,
   IconChevronRightOutlineRegular, IconCloseOutlineMedium,
   IconPlusOutlineRegular, IconRefreshOutlineRegular, IconTrashOutlineRegular,
-  IconWarningOutlineRegular, Input, MenuSurface, Modal,
+  IconWarningOutlineRegular, Input, Modal,
   PluginArtworkDefault, PluginArtworkLoop, PluginArtworkSearch, PluginArtworkSubagent, PluginArtworkTerminal,
   StateDot, Switch, Tag, TerminalBlock, Toast, Tooltip, useAnchoredPosition, useDismissOnOutsidePointer,
   type IconProps, type StateDotState, type TerminalBlockLabels,
@@ -808,7 +808,7 @@ function InstallDialog({
   // The registry options float over the dialog from their toggle, so unfolding them never adds to its height;
   // the store folds them when a run starts, so they show at the spec only.
   const registryToggleRef = useRef<HTMLButtonElement | null>(null)
-  const registryPanelRef = useRef<HTMLDivElement | null>(null)
+  const registryPanelRef = useRef<HTMLFieldSetElement | null>(null)
   const registryCustomRef = useRef<HTMLInputElement | null>(null)
   const registryShown = install.registryOpen && phase === 'idle'
   const specComposition = useInstallComposition(install.open && phase === 'idle')
@@ -978,9 +978,8 @@ function InstallDialog({
             : null}
           {registryShown
             ? createPortal(
-              <MenuSurface
+              <fieldset
                 ref={registryPanelRef}
-                role="group"
                 id={registryId}
                 className={css.registry}
                 style={registryPosition ?? { visibility: 'hidden', left: 0, top: 0 }}
@@ -1038,7 +1037,7 @@ function InstallDialog({
                     : null}
                   <span className={css.registryHint}>{t('registryCustomHint')}</span>
                 </div>
-              </MenuSurface>,
+              </fieldset>,
               document.body,
             )
             : null}
diff --git a/packages/client/ui-plugin-manager/src/client/manager-store.ts b/packages/client/ui-plugin-manager/src/client/manager-store.ts
index 35bcc433f9..80018300db 100644
--- a/packages/client/ui-plugin-manager/src/client/manager-store.ts
+++ b/packages/client/ui-plugin-manager/src/client/manager-store.ts
@@ -107,6 +107,9 @@ export type RegistryChoice =
 /** The choice shown until the Host has said which registry it asks first: the one pnpm's own configuration names. */
 const OFFICIAL_REGISTRY: RegistryChoice = { kind: 'offered', registry: null }
 
+/** Hold the manual-refresh spinner at least this long so a fast read does not flash it. */
+const REFRESH_SPINNER_MIN_MS = 400
+
 /**
  * The registry a choice asks, as the Host's install plan compares registries: pnpm's own configuration stands for
  * the URL it names, once the Host has read it.
@@ -727,6 +730,7 @@ export class PluginManagerController {
   /** Keep manual refresh feedback until its coalesced reads settle, without clearing cached cards. */
   private async refresh(): Promise<void> {
     if (this.disposed || this.getSnapshot().refreshStatus === 'refreshing') return
+    const startedAt = Date.now()
     this.patch({
       refreshStatus: 'refreshing',
       ...this.getSnapshot().notice?.kind === 'refresh-failed' ? { notice: null } : {},
@@ -737,10 +741,15 @@ export class PluginManagerController {
       // A rejected transport request leaves the cached cards available for retry.
       this.patch({ status: 'error' })
     } finally {
-      const failed = this.getSnapshot().status === 'error'
-      this.patch(failed && this.hasCachedInventory
-        ? { status: 'ready', refreshStatus: 'idle', notice: { kind: 'refresh-failed', seq: ++this.noticeSeq } }
-        : { refreshStatus: failed ? 'failed' : 'idle' })
+      // Hold the spinner to its minimum so a fast read does not flash it, then settle.
+      const remaining = REFRESH_SPINNER_MIN_MS - (Date.now() - startedAt)
+      if (remaining > 0) await new Promise<void>((resolve) => { setTimeout(resolve, remaining) })
+      if (!this.disposed) {
+        const failed = this.getSnapshot().status === 'error'
+        this.patch(failed && this.hasCachedInventory
+          ? { status: 'ready', refreshStatus: 'idle', notice: { kind: 'refresh-failed', seq: ++this.noticeSeq } }
+          : { refreshStatus: failed ? 'failed' : 'idle' })
+      }
     }
   }
 
diff --git a/packages/client/ui-plugin-manager/tests/manager-store.client.spec.ts b/packages/client/ui-plugin-manager/tests/manager-store.client.spec.ts
index b0e82bb12c..08a0f1e0f8 100644
--- a/packages/client/ui-plugin-manager/tests/manager-store.client.spec.ts
+++ b/packages/client/ui-plugin-manager/tests/manager-store.client.spec.ts
@@ -1232,6 +1232,33 @@ describe('PluginManagerController', () => {
     await loading
     expect(state()).toBe(before)
   })
+
+  it('drops a manual refresh that settles after disposal', async () => {
+    const gate = deferred<ReturnType<typeof ok<BundleInfo[]>>>()
+    const { plugins, face, state, controller } = bench()
+    await controller.load()
+    plugins.listBundles.mockReturnValueOnce(gate.promise)
+    face.refresh()
+    await vi.waitFor(() => { expect(state().refreshStatus).toBe('refreshing') })
+    controller.dispose()
+    const before = state()
+    gate.resolve(ok([{ ...BUNDLE, version: '9.9.9' }]))
+    await new Promise<void>((resolve) => { setTimeout(resolve, 10) })
+    expect(state()).toBe(before)
+  })
+
+  it('settles a manual refresh whose read outlasts the spinner minimum without an extra hold', async () => {
+    const { plugins, face, state, controller } = bench()
+    await controller.load()
+    plugins.listBundles.mockImplementationOnce(async () => {
+      await new Promise<void>((resolve) => { setTimeout(resolve, 420) })
+      return ok([{ ...BUNDLE, version: '0.42.0' }])
+    })
+    face.refresh()
+    await vi.waitFor(() => { expect(state().refreshStatus).toBe('idle') }, { timeout: 2_000 })
+    expect(state().packages[0]?.version).toBe('0.42.0')
+    expect(state().status).toBe('ready')
+  })
   it('offers the registries the Host configured, starts from its first, and asks the check and the run to start where the person chose', async () => {
     const gate = deferred<ReturnType<typeof ok<ChangeResult>>>()
     const { plugins, face, state, controller, started } = bench({
diff --git a/scripts/no-unknown-casts.baseline.json b/scripts/no-unknown-casts.baseline.json
index 761358a17e..a6232e59af 100644
--- a/scripts/no-unknown-casts.baseline.json
+++ b/scripts/no-unknown-casts.baseline.json
@@ -619,9 +619,6 @@
   "packages/client/ui-plan/tests/plan-resource.client.spec.ts": {
     "fa53d5cd55d87b522c83a98968e3a2bf933b1cc1b84d2f009e79d6c702099786": 1
   },
-  "packages/client/ui-plugin-manager/tests/browser-plugin.client.spec.tsx": {
-    "04984a2ce1486250236e638e0197da0a1a840855ed3975c59130a85358c7e5fe": 1
-  },
   "packages/client/ui-primitives/tests/highlight-viewport.client.spec.tsx": {
     "6061de0a1e01547eb1abf9d4e1b5fa79fda112fa35dda980775491123413dcce": 1
   },