diff --git a/apps/desktop/src/app/chat/sidebar/session-actions-menu.test.tsx b/apps/desktop/src/app/chat/sidebar/session-actions-menu.test.tsx
index 82faefb85b..45ee1221e8 100644
--- a/apps/desktop/src/app/chat/sidebar/session-actions-menu.test.tsx
+++ b/apps/desktop/src/app/chat/sidebar/session-actions-menu.test.tsx
@@ -2,7 +2,7 @@ import { cleanup, fireEvent, render, screen, waitFor, within } from '@testing-li
 import { atom } from 'nanostores'
 import { afterEach, describe, expect, it, vi } from 'vitest'
 
-import { SessionActionsMenu } from './session-actions-menu'
+import { SessionActionsMenu, SessionContextMenu } from './session-actions-menu'
 
 afterEach(cleanup)
 
@@ -20,7 +20,16 @@ vi.mock('@/hermes', () => ({ renameSession: vi.fn() }))
 vi.mock('@/i18n', () => ({
   useI18n: () => ({
     t: {
-      common: { cancel: 'Cancel', close: 'Close', delete: 'Delete', save: 'Save' },
+      common: {
+        cancel: 'Cancel',
+        close: 'Close',
+        confirm: 'Confirm',
+        delete: 'Delete',
+        done: 'Done',
+        loading: 'Loading…',
+        save: 'Save'
+      },
+      errors: { genericFailure: 'Something went wrong' },
       sidebar: {
         projects: {
           menuAppearance: 'Appearance',
@@ -35,6 +44,10 @@ vi.mock('@/i18n', () => ({
           branchFrom: 'Branch from here',
           copyId: 'Copy ID',
           copyIdFailed: 'Failed to copy ID',
+          deleteDesc: (title: string) => `Delete ${title}?`,
+          deleteTitle: 'Delete session?',
+          deleting: 'Deleting…',
+          deleted: 'Session deleted',
           export: 'Export',
           hideTabBar: 'Hide tab bar',
           pin: 'Pin',
@@ -140,4 +153,119 @@ describe('SessionActionsMenu', () => {
     // eslint-disable-next-line no-restricted-globals -- asserting real focus requires the live document
     expect(document.activeElement).not.toBe(trigger)
   })
+
+  it('confirms before deleting — cancel keeps the session, confirm deletes it', async () => {
+    const onDelete = vi.fn()
+    render(
+      <SessionActionsMenu onDelete={onDelete} sessionId="s1" title="My session">
+        <button aria-label="Session actions" type="button">
+          ⋮
+        </button>
+      </SessionActionsMenu>
+    )
+
+    const trigger = screen.getByRole('button', { name: 'Session actions' })
+    fireEvent.pointerDown(trigger, { button: 0, pointerType: 'mouse' })
+    fireEvent.pointerUp(trigger, { button: 0, pointerType: 'mouse' })
+    fireEvent.click(trigger)
+
+    const deleteItem = await screen.findByRole('menuitem', { name: /delete/i })
+    fireEvent.click(deleteItem)
+
+    // The confirm dialog is up and names the session being deleted.
+    expect(await screen.findByRole('dialog')).toBeTruthy()
+    expect(screen.getByText(/My session/)).toBeTruthy()
+
+    // Cancel: nothing is deleted.
+    fireEvent.click(screen.getByRole('button', { name: 'Cancel' }))
+    expect(onDelete).not.toHaveBeenCalled()
+
+    // Re-open the menu and confirm: only now does the delete call fire.
+    fireEvent.pointerDown(trigger, { button: 0, pointerType: 'mouse' })
+    fireEvent.pointerUp(trigger, { button: 0, pointerType: 'mouse' })
+    fireEvent.click(trigger)
+    const deleteItemAgain = await screen.findByRole('menuitem', { name: /delete/i })
+    fireEvent.click(deleteItemAgain)
+
+    expect(await screen.findByRole('dialog')).toBeTruthy()
+    fireEvent.click(screen.getByRole('button', { name: 'Delete' }))
+    // ConfirmDialog shows a done beat before auto-closing (600ms); awaiting it
+    // also drains the async run() update inside act().
+    expect(await screen.findByText('Session deleted')).toBeTruthy()
+    expect(onDelete).toHaveBeenCalledTimes(1)
+  })
+
+  it('disables the delete item when no onDelete is provided', async () => {
+    render(
+      <SessionActionsMenu sessionId="s1" title="My session">
+        <button aria-label="Session actions" type="button">
+          ⋮
+        </button>
+      </SessionActionsMenu>
+    )
+
+    const trigger = screen.getByRole('button', { name: 'Session actions' })
+    fireEvent.pointerDown(trigger, { button: 0, pointerType: 'mouse' })
+    fireEvent.pointerUp(trigger, { button: 0, pointerType: 'mouse' })
+    fireEvent.click(trigger)
+
+    const deleteItem = await screen.findByRole('menuitem', { name: /delete/i })
+    expect(deleteItem.getAttribute('aria-disabled')).toBe('true')
+  })
+
+  it('confirms with the Enter key and cancels with Escape', async () => {
+    const onDelete = vi.fn()
+    render(
+      <SessionActionsMenu onDelete={onDelete} sessionId="s1" title="My session">
+        <button aria-label="Session actions" type="button">
+          ⋮
+        </button>
+      </SessionActionsMenu>
+    )
+
+    const trigger = screen.getByRole('button', { name: 'Session actions' })
+    fireEvent.pointerDown(trigger, { button: 0, pointerType: 'mouse' })
+    fireEvent.pointerUp(trigger, { button: 0, pointerType: 'mouse' })
+    fireEvent.click(trigger)
+    fireEvent.click(await screen.findByRole('menuitem', { name: /delete/i }))
+
+    const dialog = await screen.findByRole('dialog')
+    expect(dialog).toBeTruthy()
+
+    // Escape cancels: dialog closes, nothing is deleted.
+    fireEvent.keyDown(window.document, { key: 'Escape' })
+    expect(await screen.queryByRole('dialog')).toBeNull()
+    expect(onDelete).not.toHaveBeenCalled()
+
+    // Re-open and confirm with Enter: the delete call fires.
+    fireEvent.pointerDown(trigger, { button: 0, pointerType: 'mouse' })
+    fireEvent.pointerUp(trigger, { button: 0, pointerType: 'mouse' })
+    fireEvent.click(trigger)
+    fireEvent.click(await screen.findByRole('menuitem', { name: /delete/i }))
+    fireEvent.keyDown(await screen.findByRole('dialog'), { key: 'Enter' })
+
+    expect(await screen.findByText('Session deleted')).toBeTruthy()
+    expect(onDelete).toHaveBeenCalledTimes(1)
+  })
+
+  it('routes the same confirm guard through the context menu', async () => {
+    const onDelete = vi.fn()
+    render(
+      <SessionContextMenu onDelete={onDelete} sessionId="s1" title="My session">
+        <button aria-label="Session row" type="button">
+          Row
+        </button>
+      </SessionContextMenu>
+    )
+
+    const row = screen.getByRole('button', { name: 'Session row' })
+    fireEvent.contextMenu(row)
+
+    fireEvent.click(await screen.findByRole('menuitem', { name: /delete/i }))
+    expect(await screen.findByRole('dialog')).toBeTruthy()
+
+    fireEvent.click(screen.getByRole('button', { name: 'Delete' }))
+    expect(await screen.findByText('Session deleted')).toBeTruthy()
+    expect(onDelete).toHaveBeenCalledTimes(1)
+  })
 })
diff --git a/apps/desktop/src/app/chat/sidebar/session-actions-menu.tsx b/apps/desktop/src/app/chat/sidebar/session-actions-menu.tsx
index 9a0e406f41..3a9e5b8c10 100644
--- a/apps/desktop/src/app/chat/sidebar/session-actions-menu.tsx
+++ b/apps/desktop/src/app/chat/sidebar/session-actions-menu.tsx
@@ -20,8 +20,9 @@ import {
 import { Button } from '@/components/ui/button'
 import { Codicon } from '@/components/ui/codicon'
 import { ColorSwatches } from '@/components/ui/color-swatches'
+import { ConfirmDialog } from '@/components/ui/confirm-dialog'
 import { CopyButton } from '@/components/ui/copy-button'
-import { Dialog, DialogContent, DialogFooter, DialogHeader, DialogTitle } from '@/components/ui/dialog'
+import { Dialog, DialogContent, DialogFooter, DialogHeader, DialogTitle, preventCloseButtonAutoFocus } from '@/components/ui/dialog'
 import { Input } from '@/components/ui/input'
 import { renameSession } from '@/hermes'
 import { useI18n } from '@/i18n'
@@ -198,6 +199,7 @@ function useSessionActions({
   // action leaves the restore alone (it's the correct behavior for them). Mirrors
   // the project menu's appearance-popover guard.
   const suppressCloseFocusRef = useRef(false)
+  const [deleteOpen, setDeleteOpen] = useState(false)
   const tiles = useStore($sessionTiles)
   const selectedStoredSessionId = useStore($selectedStoredSessionId)
   const isRemote = useStore($connection)?.mode === 'remote'
@@ -399,7 +401,15 @@ function useSessionActions({
       label: t.common.delete,
       onSelect: () => {
         triggerHaptic('warning')
-        onDelete?.()
+
+        // Deleting is irreversible (the CLI path asks y/N; the desktop used to
+        // fire instantly on click). Gate it behind an explicit confirm — see
+        // #61470. The dialog owns the delete call, so every surface that routes
+        // through this menu (sidebar rows, tab menus, the chat header) gets the
+        // guard for free.
+        if (onDelete) {
+          setDeleteOpen(true)
+        }
       },
       variant: 'destructive'
     }
@@ -484,7 +494,50 @@ function useSessionActions({
     }
   }
 
-  return { onCloseAutoFocus, renameDialog, renderItems }
+  const deleteDialog = (
+    <DeleteSessionDialog
+      onConfirm={() => {
+        onDelete?.()
+      }}
+      onOpenChange={setDeleteOpen}
+      open={deleteOpen}
+      sessionTitle={title}
+    />
+  )
+
+  return { deleteDialog, onCloseAutoFocus, renameDialog, renderItems }
+}
+
+interface DeleteSessionDialogProps {
+  open: boolean
+  onOpenChange: (open: boolean) => void
+  onConfirm: () => void
+  sessionTitle: string
+}
+
+// Thin wrapper over ConfirmDialog — the single choke point for every session
+// delete entry point (sidebar rows, tab menus, the chat header). Deleting a
+// session is irreversible and the desktop used to fire it instantly on click
+// (#61470); this mirrors the CLI's y/N guard. onConfirm is the fire-and-forget
+// delete call; ConfirmDialog owns the busy/done beat and Enter-to-confirm.
+function DeleteSessionDialog({ open, onOpenChange, onConfirm, sessionTitle }: DeleteSessionDialogProps) {
+  const { t } = useI18n()
+  const r = t.sidebar.row
+
+  return (
+    <ConfirmDialog
+      busyLabel={r.deleting}
+      confirmLabel={t.common.delete}
+      description={r.deleteDesc(sessionTitle)}
+      destructive
+      doneLabel={r.deleted}
+      onClose={() => onOpenChange(false)}
+      onConfirm={onConfirm}
+      onOpenAutoFocus={preventCloseButtonAutoFocus}
+      open={open}
+      title={r.deleteTitle}
+    />
+  )
 }
 
 interface SessionActionsMenuProps
@@ -494,7 +547,7 @@ interface SessionActionsMenuProps
 
 export function SessionActionsMenu({ children, align = 'end', sideOffset = 6, ...actions }: SessionActionsMenuProps) {
   const { t } = useI18n()
-  const { onCloseAutoFocus, renameDialog, renderItems } = useSessionActions(actions)
+  const { deleteDialog, onCloseAutoFocus, renameDialog, renderItems } = useSessionActions(actions)
 
   return (
     <>
@@ -509,6 +562,7 @@ export function SessionActionsMenu({ children, align = 'end', sideOffset = 6, ..
         {children}
       </ActionsMenu>
       {renameDialog}
+      {deleteDialog}
     </>
   )
 }
@@ -519,7 +573,7 @@ interface SessionContextMenuProps extends SessionActions {
 
 export function SessionContextMenu({ children, ...actions }: SessionContextMenuProps) {
   const { t } = useI18n()
-  const { onCloseAutoFocus, renameDialog, renderItems } = useSessionActions(actions)
+  const { deleteDialog, onCloseAutoFocus, renameDialog, renderItems } = useSessionActions(actions)
 
   return (
     <>
@@ -532,6 +586,7 @@ export function SessionContextMenu({ children, ...actions }: SessionContextMenuP
         {children}
       </ActionsContextMenu>
       {renameDialog}
+      {deleteDialog}
     </>
   )
 }
diff --git a/apps/desktop/src/components/ui/confirm-dialog.tsx b/apps/desktop/src/components/ui/confirm-dialog.tsx
index becb958a98..d4d5fc327d 100644
--- a/apps/desktop/src/components/ui/confirm-dialog.tsx
+++ b/apps/desktop/src/components/ui/confirm-dialog.tsx
@@ -28,6 +28,10 @@ interface ConfirmDialogProps {
   destructive?: boolean
   /** Close as soon as onConfirm resolves — for optimistic actions that finish in the background. */
   dismissOnConfirm?: boolean
+  /** Focus control for dialogs with no input. Pass `preventCloseButtonAutoFocus`
+   *  so opening doesn't land focus on the close/cancel button (which would pop
+   *  its tooltip with no pointer near it). */
+  onOpenAutoFocus?: (event: Event) => void
 }
 
 // Shared confirmation dialog: Enter confirms (from anywhere in the dialog),
@@ -44,7 +48,8 @@ export function ConfirmDialog({
   doneLabel,
   cancelLabel,
   destructive = false,
-  dismissOnConfirm = false
+  dismissOnConfirm = false,
+  onOpenAutoFocus
 }: ConfirmDialogProps) {
   const { t } = useI18n()
   const [status, setStatus] = useState<'done' | 'idle' | 'saving'>('idle')
@@ -104,6 +109,7 @@ export function ConfirmDialog({
             void run()
           }
         }}
+        onOpenAutoFocus={onOpenAutoFocus}
       >
         <DialogHeader>
           <DialogTitle>{title}</DialogTitle>
diff --git a/apps/desktop/src/i18n/ar.ts b/apps/desktop/src/i18n/ar.ts
index 1c9db27193..1397b6f4aa 100644
--- a/apps/desktop/src/i18n/ar.ts
+++ b/apps/desktop/src/i18n/ar.ts
@@ -1668,6 +1668,10 @@ export const ar = defineLocale({
       renameTitle: 'إعادة تسمية الجلسة',
       renameDesc: '',
       untitledPlaceholder: 'جلسة بلا عنوان',
+      deleteTitle: 'حذف الجلسة؟',
+      deleteDesc: title => `سيتم حذف «${title}» نهائيًا. لا يمكن التراجع عن هذا الإجراء.`,
+      deleting: 'جارٍ الحذف…',
+      deleted: 'تم حذف الجلسة',
       ageNow: 'الآن',
       ageDay: 'يوم',
       ageHour: 'ساعة',
diff --git a/apps/desktop/src/i18n/en.ts b/apps/desktop/src/i18n/en.ts
index 1e836201ec..f5f021424c 100644
--- a/apps/desktop/src/i18n/en.ts
+++ b/apps/desktop/src/i18n/en.ts
@@ -2040,6 +2040,10 @@ export const en: Translations = {
       renameTitle: 'Rename session',
       renameDesc: 'Leave empty to clear.',
       untitledPlaceholder: 'Untitled session',
+      deleteTitle: 'Delete session?',
+      deleteDesc: title => `This will permanently delete “${title}”. This cannot be undone.`,
+      deleting: 'Deleting…',
+      deleted: 'Session deleted',
       untitledChat: id => `Chat ${id}`,
       messageCount: count => `${count} ${count === 1 ? 'message' : 'messages'}`,
       todoProgress: 'Tasks completed',
diff --git a/apps/desktop/src/i18n/ja.ts b/apps/desktop/src/i18n/ja.ts
index a59bed41c2..db3799c83b 100644
--- a/apps/desktop/src/i18n/ja.ts
+++ b/apps/desktop/src/i18n/ja.ts
@@ -1811,6 +1811,10 @@ export const ja = defineLocale({
       renameTitle: 'セッションの名前を変更',
       renameDesc: '空欄にするとクリアされます。',
       untitledPlaceholder: '無題のセッション',
+      deleteTitle: 'セッションを削除しますか？',
+      deleteDesc: title => `「${title}」を完全に削除します。この操作は元に戻せません。`,
+      deleting: '削除中…',
+      deleted: 'セッションを削除しました',
       untitledChat: id => `セッション ${id}`,
       ageNow: 'たった今',
       ageDay: '日',
diff --git a/apps/desktop/src/i18n/types.ts b/apps/desktop/src/i18n/types.ts
index ce2066beda..ac803a3782 100644
--- a/apps/desktop/src/i18n/types.ts
+++ b/apps/desktop/src/i18n/types.ts
@@ -1723,6 +1723,10 @@ export interface Translations {
       renameTitle: string
       renameDesc: string
       untitledPlaceholder: string
+      deleteTitle: string
+      deleteDesc: (title: string) => string
+      deleting: string
+      deleted: string
       untitledChat: (id: string) => string
       messageCount: (count: number) => string
       todoProgress: string
diff --git a/apps/desktop/src/i18n/zh-hant.ts b/apps/desktop/src/i18n/zh-hant.ts
index 8efe69eba8..d310074045 100644
--- a/apps/desktop/src/i18n/zh-hant.ts
+++ b/apps/desktop/src/i18n/zh-hant.ts
@@ -1753,6 +1753,10 @@ export const zhHant = defineLocale({
       renameTitle: '重新命名工作階段',
       renameDesc: '留空則清除。',
       untitledPlaceholder: '未命名工作階段',
+      deleteTitle: '刪除會話？',
+      deleteDesc: title => `這將永久刪除「${title}」，且無法復原。`,
+      deleting: '正在刪除…',
+      deleted: '會話已刪除',
       untitledChat: id => `工作階段 ${id}`,
       ageNow: '剛才',
       ageDay: '天',
diff --git a/apps/desktop/src/i18n/zh.ts b/apps/desktop/src/i18n/zh.ts
index b133f1c6b3..a1b03f9e45 100644
--- a/apps/desktop/src/i18n/zh.ts
+++ b/apps/desktop/src/i18n/zh.ts
@@ -2226,6 +2226,10 @@ export const zh: Translations = {
       renameTitle: '重命名会话',
       renameDesc: '留空则清除。',
       untitledPlaceholder: '无标题会话',
+      deleteTitle: '删除会话？',
+      deleteDesc: title => `这将永久删除“${title}”，且无法撤销。`,
+      deleting: '正在删除…',
+      deleted: '会话已删除',
       untitledChat: id => `会话 ${id}`,
       messageCount: count => `${count} 条消息`,
       todoProgress: '任务完成度',