diff --git a/packages/client/ui-layout/package.json b/packages/client/ui-layout/package.json
index ce216ab52f..a233d3410a 100644
--- a/packages/client/ui-layout/package.json
+++ b/packages/client/ui-layout/package.json
@@ -56,8 +56,7 @@
     "@deepseek-ai/dsh-client-ui-theme": "workspace:*",
     "@deepseek-ai/cordis": "workspace:~",
     "react": "^18.2.0",
-    "@deepseek-ai/dsh-client-shortcuts": "workspace:*",
-    "@deepseek-ai/dsh-client-ui-primitives": "workspace:*"
+    "@deepseek-ai/dsh-client-shortcuts": "workspace:*"
   },
   "files": [
     "locale/*.json",
diff --git a/packages/client/ui-layout/src/client/AppFrame.tsx b/packages/client/ui-layout/src/client/AppFrame.tsx
index 7ffcb49a24..14b64dd92b 100644
--- a/packages/client/ui-layout/src/client/AppFrame.tsx
+++ b/packages/client/ui-layout/src/client/AppFrame.tsx
@@ -16,7 +16,6 @@
  */
 import { useCallback, useEffect, useLayoutEffect, useMemo, useRef, useState } from 'react'
 import type { ReactNode } from 'react'
-import { focusWithoutRing, isBehindModal } from '@deepseek-ai/dsh-client-ui-primitives'
 import type {
   HostObservable, InjectFace, PropsLocale, PropsRenderSlots, PropsRuntime, PropsStore,
 } from '@deepseek-ai/dsh-client-ui-slots'
@@ -138,8 +137,6 @@ export function AppFrame({
 }: AppFrameProps) {
   const layoutInfo = useStore(state => state.layoutInfo)
   const frameRef = useRef<HTMLDivElement | null>(null)
-  const leadingSeat = useRef<HTMLDivElement>(null)
-  const sidebarFocus = useRef<HTMLElement | null>(null)
   const viewport = layoutInfo.viewportWidth
   const foldedLandscape = useFoldedLandscape(matches => matches)
 
@@ -176,11 +173,6 @@ export function AppFrame({
   const centeredSidebar = foldedLandscape && viewport >= SIDEBAR_DRAWER_BREAKPOINT
   const sidebarCollapsed = narrow ? !layoutInfo.narrowExpanded : layoutInfo.sidebar === 0
   const drawerOpen = drawer && !sidebarCollapsed
-  useLayoutEffect(() => {
-    if (!drawer || !sidebarCollapsed || sidebarFocus.current !== document.activeElement) return
-    const opener = leadingSeat.current?.querySelector('button')
-    if (opener != null && !isBehindModal(opener)) focusWithoutRing(opener, { preventScroll: true })
-  }, [drawer, sidebarCollapsed])
   // Entering drawer mode from a collapsed rail hides the backing immediately.
   const [sidebarTransition, setSidebarTransition] = useState({ drawer, collapsed: sidebarCollapsed, instant: true })
   if (sidebarTransition.drawer !== drawer || sidebarTransition.collapsed !== sidebarCollapsed) {
@@ -322,7 +314,6 @@ export function AppFrame({
       {drawer && <div className={css.drawerMask} data-sidebar-mask aria-hidden="true"
         onClick={drawerOpen ? () => { actions.toggleSidebar() } : undefined} />}
       <div className={css.sidebarCol}
-        onFocusCapture={(event) => { if (event.target instanceof HTMLElement) sidebarFocus.current = event.target }}
         style={drawer ? { width: sidebarWidth } : undefined}
         {...{ inert: drawer && sidebarCollapsed ? '' : undefined }}>
         {sidebar}
@@ -340,7 +331,7 @@ export function AppFrame({
         {overlays}
       </div>
       {leadingMounted && (
-        <div ref={leadingSeat} className={css.leadingSeat} data-shell-leading {...{ inert: drawerOpen ? '' : undefined }}>
+        <div className={css.leadingSeat} data-shell-leading {...{ inert: drawerOpen ? '' : undefined }}>
           {leading}
         </div>
       )}
diff --git a/packages/client/ui-layout/tests/app-frame.client.spec.tsx b/packages/client/ui-layout/tests/app-frame.client.spec.tsx
index 94aec8f50c..c35e914149 100644
--- a/packages/client/ui-layout/tests/app-frame.client.spec.tsx
+++ b/packages/client/ui-layout/tests/app-frame.client.spec.tsx
@@ -1,7 +1,5 @@
 // @vitest-environment jsdom
 /** Frame interactions with a real store and explicitly driven browser measurements. */
-import { useState } from 'react'
-import { Menu, Modal } from '@deepseek-ai/dsh-client-ui-primitives'
 import type { GlobalStandardProps, RenderOpts } from '@deepseek-ai/dsh-client-ui-slots'
 import { allowAllAccess, bindSnapshotSelector } from '@deepseek-ai/dsh-client-test-runtime'
 import { createSnapshotStore, type SnapshotStore } from '@deepseek-ai/dsh-client-store'
@@ -798,25 +796,3 @@ describe('sidebar drawer', () => {
     expect(tracks(frame)).toEqual([0, 0])
   })
 })
-
-it.each(['menu', 'outside', 'dialog'] as const)('closes an obscured sidebar menu while preserving %s focus', (destination) => {
-  function Sidebar() {
-    const [open, setOpen] = useState(true)
-    return <><Menu open={open} onClose={() => { setOpen(false) }} portal
-      anchor={<button>View options</button>} items={[{ id: 'flat', label: 'Flat list' }]} />
-    {destination === 'dialog' && <Modal open title="Settings" closeLabel="Close" onClose={vi.fn()}><button>Settings control</button></Modal>}
-    </>
-  }
-  const view = mountFrame(1200, key => key === 'sidebar' ? <Sidebar />
-    : key === 'shell.leading' ? <button>Open navigation</button> : <button>Outside control</button>)
-  const menuItem = view.getByRole('menuitem')
-  let target: HTMLElement = menuItem
-  if (destination === 'outside') target = view.getAllByRole('button', { name: 'Outside control' })[0]!
-  if (destination === 'dialog') target = view.getByRole('button', { name: 'Settings control' })
-  target.focus()
-  resize(767)
-  act(flushFrames)
-  expect(view.queryByRole('menuitem')).toBeNull()
-  expect(document.activeElement).toBe(destination === 'menu'
-    ? view.getByRole('button', { name: 'Open navigation' }) : target)
-})
diff --git a/packages/client/ui-layout/tsconfig.json b/packages/client/ui-layout/tsconfig.json
index e9e47b5e8d..ae8dfb07f6 100644
--- a/packages/client/ui-layout/tsconfig.json
+++ b/packages/client/ui-layout/tsconfig.json
@@ -8,7 +8,6 @@
     "src"
   ],
   "references": [
-    { "path": "../ui-primitives" },
     {
       "path": "../../util/brand"
     },
@@ -24,9 +23,6 @@
     {
       "path": "../ui-theme/tsconfig.client.json"
     },
-    {
-      "path": "../ui-primitives"
-    },
     {
       "path": "../store"
     },
diff --git a/packages/client/ui-sidebar/README.i18n.yaml b/packages/client/ui-sidebar/README.i18n.yaml
index 9bd5df1183..1b0e75dff6 100644
--- a/packages/client/ui-sidebar/README.i18n.yaml
+++ b/packages/client/ui-sidebar/README.i18n.yaml
@@ -15,8 +15,8 @@
   en: d152484eb41ac6b4
   zh: 09388d293f9be9cb
 /deepseek-ai-dsh-client-ui-sidebar/use-this-package:
-  en: 90255789ba8051e5
-  zh: 8fa1d34539f58e2e
+  en: 13a63caa34a0061d
+  zh: a3e1953ed3ac4d8f
 /deepseek-ai-dsh-client-ui-sidebar/use-this-package/brand-and-new-session:
   en: f2c2254325cea5db
   zh: c9ef643b431f8328
diff --git a/packages/client/ui-sidebar/README.md b/packages/client/ui-sidebar/README.md
index e2fe436da7..eda0500ce9 100644
--- a/packages/client/ui-sidebar/README.md
+++ b/packages/client/ui-sidebar/README.md
@@ -29,7 +29,7 @@ The dsh web client sidebar lets users recognize the active build, start a new se
 
 The sidebar is the navigation shell: users see the brand, start new sessions, collapse the rail, and reach Settings. Feature plugins fill its seats — ui-workspace fills `sidebar.workspaces`, ui-settings registers the trigger row and settings panel at `sidebar.settings`.
 
-Below 768px, without a native Windows caption, the sidebar keeps its expanded content mounted inside the frame's drawer. The drawer initially focuses its collapse toggle, traps keyboard focus, closes with Escape or a mask press, and restores the invoking control unless a foreground dialog remains open. When an open drawer becomes a collapsed rail, focus transfers to the rail toggle if the invoking control unmounts and focus remains in the sidebar. Returning from a closed drawer renders the compact rail immediately, without a crossfade. Its toggle tooltip renders outside the drawer. Opening it does not resize the conversation.
+Below 768px, without a native Windows caption, the sidebar keeps its expanded content mounted inside the frame's drawer. The drawer initially focuses its collapse toggle, traps keyboard focus, closes with Escape or a mask press, and restores the invoking control unless a foreground dialog remains open. When an open drawer becomes a collapsed rail, focus transfers to the rail toggle if the invoking control unmounts and focus remains in the sidebar. When a collapsed rail becomes a hidden drawer, the sidebar transfers its own focus to its header opener, preserving focus elsewhere and in foreground dialogs. Returning from a closed drawer renders the compact rail immediately, without a crossfade. Its toggle tooltip renders outside the drawer. Opening it does not resize the conversation.
 
 ### Brand and New Session
 
diff --git a/packages/client/ui-sidebar/README.zh.md b/packages/client/ui-sidebar/README.zh.md
index 7ad06f9c2c..43f5634e49 100644
--- a/packages/client/ui-sidebar/README.zh.md
+++ b/packages/client/ui-sidebar/README.zh.md
@@ -29,7 +29,7 @@ dsh Web 客户端的侧边栏让用户识别当前构建、启动新会话、将
 
 侧边栏是导航外壳：用户看到品牌、启动新会话、折叠轨道并到达 Settings。功能插件填充它的席位——ui-workspace 填充 `sidebar.workspaces`，ui-settings 在 `sidebar.settings` 注册触发行与设置面板。
 
-宽度低于 768px 且没有原生 Windows 顶栏时，侧边栏在框架抽屉内保留展开内容。抽屉首先聚焦收起按钮，并限制键盘焦点范围，支持 Escape 和点击蒙层关闭，并在没有上层弹窗时将焦点还给打开它的控件。打开的抽屉切换为收起图标栏时，若打开入口已卸载且焦点仍在侧栏内，焦点转交给图标栏开关。关闭的抽屉切回图标栏时，立即使用紧凑布局，不播放交叉淡入淡出。开关的提示气泡在抽屉外渲染。打开抽屉不改变会话宽度。
+宽度低于 768px 且没有原生 Windows 顶栏时，侧边栏在框架抽屉内保留展开内容。抽屉首先聚焦收起按钮，并限制键盘焦点范围，支持 Escape 和点击蒙层关闭，并在没有上层弹窗时将焦点还给打开它的控件。打开的抽屉切换为收起图标栏时，若打开入口已卸载且焦点仍在侧栏内，焦点转交给图标栏开关。收起的图标栏变为隐藏抽屉时，侧栏将自身焦点转交给顶部展开按钮，保留其他区域和上层弹窗的焦点。关闭的抽屉切回图标栏时，立即使用紧凑布局，不播放交叉淡入淡出。开关的提示气泡在抽屉外渲染。打开抽屉不改变会话宽度。
 
 ### 品牌与 New Session
 
diff --git a/packages/client/ui-sidebar/src/client/HeaderLeadingControls.tsx b/packages/client/ui-sidebar/src/client/HeaderLeadingControls.tsx
index 3bb05369cb..cbd8266206 100644
--- a/packages/client/ui-sidebar/src/client/HeaderLeadingControls.tsx
+++ b/packages/client/ui-sidebar/src/client/HeaderLeadingControls.tsx
@@ -30,6 +30,7 @@ export function HeaderLeadingControls({ toggleSidebar, startSession, trackEntryC
     <div className={css.controls}>
       <Tooltip label={t('toggle.open')} shortcutKeys={shortcut?.keys} delayMs={500}>
         <button
+          data-sidebar-opener
           type="button"
           className={css.iconButton}
           aria-label={t('toggle.open')}
diff --git a/packages/client/ui-sidebar/src/client/SidebarRoot.tsx b/packages/client/ui-sidebar/src/client/SidebarRoot.tsx
index ab1691ad52..c3869df9a4 100644
--- a/packages/client/ui-sidebar/src/client/SidebarRoot.tsx
+++ b/packages/client/ui-sidebar/src/client/SidebarRoot.tsx
@@ -16,11 +16,11 @@
  * scrollbar indirection away while it is elsewhere, so a list the user is not
  * pointing at carries no bar.
  */
-import { useEffect, useRef, useState } from 'react'
+import { useEffect, useLayoutEffect, useRef, useState } from 'react'
 import clsx from 'clsx'
 import {
   FishLogo, IconAppsAddOutlineRegular, IconNewChatOutlineMedium, IconNewChatOutlineRegular,
-  IconPanelLeftOutlineRegular, isDarwinDesktop, Menu, ShortcutKeys, Toast, Tooltip, useModalLayer,
+  IconPanelLeftOutlineRegular, focusWithoutRing, isBehindModal, isDarwinDesktop, Menu, ShortcutKeys, Toast, Tooltip, useModalLayer,
   writeClipboard,
 } from '@deepseek-ai/dsh-client-ui-primitives'
 import type { InjectFace, PropsRenderSlots, PropsRuntime } from '@deepseek-ai/dsh-client-ui-slots'
@@ -187,7 +187,13 @@ export function SidebarRoot({
   // leaves. A pointer that returns within that window cancels the pending
   // hide rather than restarting from a hidden bar.
   const column = useRef<HTMLDivElement>(null)
+  const sidebarFocus = useRef<Element | null>(null)
   useModalLayer(column, drawer && !collapsed, toggleSidebar)
+  useLayoutEffect(() => {
+    if (!drawer || !collapsed || sidebarFocus.current !== document.activeElement) return
+    const opener = column.current?.ownerDocument.querySelector<HTMLElement>('[data-sidebar-opener]')
+    if (opener != null && !isBehindModal(opener)) focusWithoutRing(opener, { preventScroll: true })
+  }, [drawer, collapsed])
   const [pointerInside, setPointerInside] = useState(false)
   const lingerTimer = useRef<number | undefined>(undefined)
   const armLinger = (): void => {
@@ -267,6 +273,7 @@ export function SidebarRoot({
   return (
     <div
       ref={column}
+      onFocusCapture={(event) => { sidebarFocus.current = event.target }}
       role={drawer ? 'dialog' : undefined}
       data-shortcut-modal={drawer ? 'sidebar' : undefined}
       aria-modal={drawer && !collapsed ? true : undefined}
diff --git a/packages/client/ui-sidebar/tests/sidebar-root.client.spec.tsx b/packages/client/ui-sidebar/tests/sidebar-root.client.spec.tsx
index 936c171783..7b8c4c1e38 100644
--- a/packages/client/ui-sidebar/tests/sidebar-root.client.spec.tsx
+++ b/packages/client/ui-sidebar/tests/sidebar-root.client.spec.tsx
@@ -2,10 +2,11 @@
 import type { GlobalStandardProps } from '@deepseek-ai/dsh-client-ui-slots'
 import type { ShortcutCatalogEntry, ShortcutCommandId } from '@deepseek-ai/dsh-client-shortcuts/client'
 import { afterEach, describe, expect, it, vi } from 'vitest'
-import { act, cleanup, fireEvent, render, screen } from '@testing-library/react'
-import { Modal, Tooltip } from '@deepseek-ai/dsh-client-ui-primitives'
+import { act, cleanup, fireEvent, render, screen, waitFor } from '@testing-library/react'
+import { Menu, Modal, Tooltip } from '@deepseek-ai/dsh-client-ui-primitives'
 import { allowAllAccess, makeTranslate } from '@deepseek-ai/dsh-client-test-runtime'
 import type { ReactNode } from 'react'
+import { useState } from 'react'
 import type {
   SidebarFooterActionOwnerProps, SidebarRootComponentProps, SidebarSectionOwnerProps,
   SidebarSettingsOwnerProps,
@@ -36,11 +37,12 @@ type AttentionSnapshot = Parameters<Parameters<SidebarRootComponentProps['useSes
 const noAttention: AttentionSnapshot = new Map()
 const useSessionStatus: SidebarRootComponentProps['useSessionStatus'] = selector => selector(noAttention)
 
-function mountShell({ collapsed = false, width = 300, drawer = false, shortcuts = [] }: {
+function mountShell({ collapsed = false, width = 300, drawer = false, shortcuts = [], content }: {
   collapsed?: boolean
   width?: number
   drawer?: boolean
   shortcuts?: readonly ShortcutCatalogEntry[]
+  content?: ReactNode
 } = {}) {
   const startSession = vi.fn()
   const toggleSidebar = vi.fn()
@@ -78,7 +80,7 @@ function mountShell({ collapsed = false, width = 300, drawer = false, shortcuts
           return <div data-testid="footer-action-seat" data-wide={owner.wide} />
         }
         regionOwner = owner as SidebarSectionOwnerProps
-        return <div data-testid="region" data-wide={owner.wide} />
+        return <div data-testid="region" data-wide={owner.wide}>{content}</div>
       }) as SidebarRootComponentProps['renderSlot']}
     />
   )
@@ -127,6 +129,7 @@ describe('SidebarRoot shell', () => {
       usePanels={select => select([])} useEntryPins={select => select([])}
       useEntryActions={select => select(false)} setPinned={vi.fn()} useShortcuts={select => select([shortcut])} />)
     const button = screen.getByRole('button', { name: 'New session' })
+    expect(screen.getByRole('button', { name: 'Open sidebar' }).hasAttribute('data-sidebar-opener')).toBe(true)
     expect(button.getAttribute('aria-keyshortcuts')).toBe('Control+N')
     fireEvent.focus(button)
     expect(Array.from(screen.getByRole('tooltip').querySelectorAll('kbd'), key => key.textContent)).toEqual(['Ctrl', 'N'])
@@ -576,3 +579,35 @@ it('closes a drawer opened from a focused SVG element', () => {
     opener.remove()
   }
 })
+
+it.each(['menu', 'outside', 'dialog'] as const)('closes an obscured sidebar menu while preserving %s focus', async (destination) => {
+  function Content() {
+    const [open, setOpen] = useState(true)
+    return <><Menu open={open} onClose={() => { setOpen(false) }} portal
+      anchor={<button>View options</button>} items={[{ id: 'flat', label: 'Flat list' }]} />
+    {destination === 'dialog' && <Modal open title="Settings" closeLabel="Close" onClose={vi.fn()}><button>Settings control</button></Modal>}
+    </>
+  }
+  render(<><button data-sidebar-opener>Open navigation</button><button>Outside control</button></>)
+  const h = mountShell({ collapsed: true, width: 56, content: <Content /> })
+  let target: HTMLElement = screen.getByRole('menuitem')
+  if (destination === 'outside') target = screen.getByRole('button', { name: 'Outside control' })
+  if (destination === 'dialog') target = screen.getByRole('button', { name: 'Settings control' })
+  target.focus()
+  screen.getByTestId('region').setAttribute('inert', '')
+  h.rerender({ drawer: true })
+  await waitFor(() => { expect(screen.queryByRole('menuitem')).toBeNull() })
+  expect(document.activeElement).toBe(destination === 'menu'
+    ? screen.getByRole('button', { name: 'Open navigation' }) : target)
+})
+
+it.each([false, true])('moves hidden sidebar focus only to an available opener (%s)', (hasOpener) => {
+  render(<button data-sidebar-opener={hasOpener || undefined}>Open navigation</button>)
+  const h = mountShell({ collapsed: true, width: 56 })
+  const previous = screen.getByRole('button', { name: 'Open sidebar' })
+  previous.focus()
+  h.rerender({ drawer: true })
+  const expected = hasOpener ? screen.getByRole('button', { name: 'Open navigation' }) : previous
+  expect(document.activeElement).toBe(expected)
+  if (hasOpener) expect(expected.hasAttribute('data-dsh-automatic-focus')).toBe(true)
+})
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 4511d5a575..9305b17160 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -4607,9 +4607,6 @@ importers:
       '@deepseek-ai/dsh-client-store':
         specifier: workspace:*
         version: link:../store
-      '@deepseek-ai/dsh-client-ui-primitives':
-        specifier: workspace:*
-        version: link:../ui-primitives
       '@deepseek-ai/dsh-client-ui-renderer':
         specifier: workspace:*
         version: link:../ui-renderer