diff --git a/desktop/src/__tests__/generalSettings.test.tsx b/desktop/src/__tests__/generalSettings.test.tsx
index c53c2996..a101cbcb 100644
--- a/desktop/src/__tests__/generalSettings.test.tsx
+++ b/desktop/src/__tests__/generalSettings.test.tsx
@@ -1,11 +1,30 @@
 import { beforeEach, describe, expect, it, vi } from 'vitest'
-import { fireEvent, render, screen } from '@testing-library/react'
+import { fireEvent, render, screen, within } from '@testing-library/react'
 import '@testing-library/jest-dom'
 
 import { Settings } from '../pages/Settings'
 import { useSettingsStore } from '../stores/settingsStore'
 import { useUIStore } from '../stores/uiStore'
 import { useUpdateStore } from '../stores/updateStore'
+import type { SavedProvider } from '../types/provider'
+
+const MOCK_DELETE_PROVIDER = vi.fn()
+const providerStoreState = {
+  providers: [] as SavedProvider[],
+  activeId: null,
+  presets: [],
+  isLoading: false,
+  isPresetsLoading: false,
+  fetchProviders: vi.fn(),
+  fetchPresets: vi.fn(),
+  deleteProvider: MOCK_DELETE_PROVIDER,
+  activateProvider: vi.fn(),
+  activateOfficial: vi.fn(),
+  testProvider: vi.fn(),
+  createProvider: vi.fn(),
+  updateProvider: vi.fn(),
+  testConfig: vi.fn(),
+}
 
 vi.mock('../api/agents', () => ({
   agentsApi: {
@@ -14,19 +33,7 @@ vi.mock('../api/agents', () => ({
 }))
 
 vi.mock('../stores/providerStore', () => ({
-  useProviderStore: () => ({
-    providers: [],
-    activeId: null,
-    isLoading: false,
-    fetchProviders: vi.fn(),
-    deleteProvider: vi.fn(),
-    activateProvider: vi.fn(),
-    activateOfficial: vi.fn(),
-    testProvider: vi.fn(),
-    createProvider: vi.fn(),
-    updateProvider: vi.fn(),
-    testConfig: vi.fn(),
-  }),
+  useProviderStore: () => providerStoreState,
 }))
 
 vi.mock('../pages/AdapterSettings', () => ({
@@ -64,6 +71,21 @@ vi.mock('../components/chat/CodeViewer', () => ({
 
 describe('Settings > General tab', () => {
   beforeEach(() => {
+    MOCK_DELETE_PROVIDER.mockReset()
+    providerStoreState.providers = []
+    providerStoreState.activeId = null
+    providerStoreState.presets = []
+    providerStoreState.isLoading = false
+    providerStoreState.isPresetsLoading = false
+    providerStoreState.fetchProviders = vi.fn()
+    providerStoreState.fetchPresets = vi.fn()
+    providerStoreState.activateProvider = vi.fn()
+    providerStoreState.activateOfficial = vi.fn()
+    providerStoreState.testProvider = vi.fn()
+    providerStoreState.createProvider = vi.fn()
+    providerStoreState.updateProvider = vi.fn()
+    providerStoreState.testConfig = vi.fn()
+
     useSettingsStore.setState({
       locale: 'en',
       skipWebFetchPreflight: true,
@@ -111,6 +133,44 @@ describe('Settings > General tab', () => {
   })
 })
 
+describe('Settings > Providers tab', () => {
+  beforeEach(() => {
+    MOCK_DELETE_PROVIDER.mockReset()
+    providerStoreState.providers = [
+      {
+        id: 'provider-1',
+        name: 'MiniMax-M2.7-highspeed(openai)',
+        presetId: 'custom',
+        apiKey: '***',
+        baseUrl: 'https://api.minimaxi.com',
+        apiFormat: 'openai_chat',
+        models: {
+          main: 'MiniMax-M2.7-highspeed',
+          haiku: '',
+          sonnet: '',
+          opus: '',
+        },
+        notes: '',
+      },
+    ]
+  })
+
+  it('requires confirmation before deleting a provider', async () => {
+    render(<Settings />)
+
+    fireEvent.click(screen.getAllByText('Delete')[0]!)
+
+    expect(MOCK_DELETE_PROVIDER).not.toHaveBeenCalled()
+    expect(screen.getByRole('dialog')).toBeInTheDocument()
+    expect(screen.getByText('Delete provider "MiniMax-M2.7-highspeed(openai)"? This cannot be undone.')).toBeInTheDocument()
+
+    const dialog = screen.getByRole('dialog')
+    fireEvent.click(within(dialog).getByRole('button', { name: 'Delete' }))
+
+    expect(MOCK_DELETE_PROVIDER).toHaveBeenCalledWith('provider-1')
+  })
+})
+
 describe('Settings > About tab', () => {
   beforeEach(() => {
     useUIStore.setState({ pendingSettingsTab: 'about' })
diff --git a/desktop/src/components/layout/Sidebar.test.tsx b/desktop/src/components/layout/Sidebar.test.tsx
index c98ef8fe..f380c64a 100644
--- a/desktop/src/components/layout/Sidebar.test.tsx
+++ b/desktop/src/components/layout/Sidebar.test.tsx
@@ -1,5 +1,5 @@
 import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest'
-import { act, fireEvent, render, screen, waitFor } from '@testing-library/react'
+import { act, fireEvent, render, screen, waitFor, within } from '@testing-library/react'
 import '@testing-library/jest-dom'
 
 vi.mock('./ProjectFilter', () => ({
@@ -17,6 +17,7 @@ vi.mock('../../i18n', () => ({
       'sidebar.noMatching': 'No matching sessions',
       'sidebar.sessionListFailed': 'Session list failed',
       'common.retry': 'Retry',
+      'common.cancel': 'Cancel',
       'common.delete': 'Delete',
       'common.rename': 'Rename',
       'sidebar.timeGroup.today': 'Today',
@@ -25,6 +26,7 @@ vi.mock('../../i18n', () => ({
       'sidebar.timeGroup.last30days': 'Last 30 Days',
       'sidebar.timeGroup.older': 'Older',
       'sidebar.missingDir': 'Missing',
+      'sidebar.confirmDelete': 'Delete this session? This cannot be undone.',
       'sidebar.collapse': 'Collapse sidebar',
       'sidebar.expand': 'Expand sidebar',
     }
@@ -121,7 +123,7 @@ describe('Sidebar', () => {
     expect(useTabStore.getState().tabs).toEqual([])
   })
 
-  it('removes the matching tab when deleting a session from the sidebar', async () => {
+  it('requires confirmation before deleting a session from the sidebar', async () => {
     deleteSession.mockResolvedValue(undefined)
     useSessionStore.setState({
       sessions: [
@@ -146,8 +148,15 @@ describe('Sidebar', () => {
 
     fireEvent.contextMenu(screen.getByRole('button', { name: /Open Session/ }))
 
+    fireEvent.click(screen.getByRole('button', { name: 'Delete' }))
+
+    expect(deleteSession).not.toHaveBeenCalled()
+    const dialog = screen.getByRole('dialog')
+    expect(dialog).toBeInTheDocument()
+    expect(screen.getByText('Delete this session? This cannot be undone.')).toBeInTheDocument()
+
     await act(async () => {
-      fireEvent.click(screen.getByRole('button', { name: 'Delete' }))
+      fireEvent.click(within(dialog).getByRole('button', { name: 'Delete' }))
     })
 
     await waitFor(() => {
diff --git a/desktop/src/components/layout/Sidebar.tsx b/desktop/src/components/layout/Sidebar.tsx
index 85ad50b8..50c0eb65 100644
--- a/desktop/src/components/layout/Sidebar.tsx
+++ b/desktop/src/components/layout/Sidebar.tsx
@@ -3,6 +3,7 @@ import { useSessionStore } from '../../stores/sessionStore'
 import { useUIStore } from '../../stores/uiStore'
 import { useTranslation } from '../../i18n'
 import { ProjectFilter } from './ProjectFilter'
+import { ConfirmDialog } from '../shared/ConfirmDialog'
 import type { SessionListItem } from '../../types/session'
 import { useTabStore, SETTINGS_TAB_ID, SCHEDULED_TAB_ID } from '../../stores/tabStore'
 import { useChatStore } from '../../stores/chatStore'
@@ -29,6 +30,7 @@ export function Sidebar() {
   const disconnectSession = useChatStore((s) => s.disconnectSession)
   const [searchQuery, setSearchQuery] = useState('')
   const [contextMenu, setContextMenu] = useState<{ id: string; x: number; y: number } | null>(null)
+  const [pendingDeleteSessionId, setPendingDeleteSessionId] = useState<string | null>(null)
   const [renamingId, setRenamingId] = useState<string | null>(null)
   const [renameValue, setRenameValue] = useState('')
 
@@ -67,12 +69,18 @@ export function Sidebar() {
     setContextMenu({ id, x: e.clientX, y: e.clientY })
   }, [])
 
-  const handleDelete = useCallback(async (id: string) => {
+  const handleDelete = useCallback((id: string) => {
     setContextMenu(null)
-    await deleteSession(id)
-    disconnectSession(id)
-    closeTab(id)
-  }, [closeTab, deleteSession, disconnectSession])
+    setPendingDeleteSessionId(id)
+  }, [])
+
+  const confirmDelete = useCallback(async () => {
+    if (!pendingDeleteSessionId) return
+    await deleteSession(pendingDeleteSessionId)
+    disconnectSession(pendingDeleteSessionId)
+    closeTab(pendingDeleteSessionId)
+    setPendingDeleteSessionId(null)
+  }, [closeTab, deleteSession, disconnectSession, pendingDeleteSessionId])
 
   const handleStartRename = useCallback((id: string, currentTitle: string) => {
     setContextMenu(null)
@@ -351,6 +359,17 @@ export function Sidebar() {
           </button>
         </div>
       )}
+
+      <ConfirmDialog
+        open={pendingDeleteSessionId !== null}
+        onClose={() => setPendingDeleteSessionId(null)}
+        onConfirm={confirmDelete}
+        title={t('common.delete')}
+        body={pendingDeleteSessionId ? t('sidebar.confirmDelete') : ''}
+        confirmLabel={t('common.delete')}
+        cancelLabel={t('common.cancel')}
+        confirmVariant="danger"
+      />
     </aside>
   )
 }
diff --git a/desktop/src/components/plugins/PluginDetail.tsx b/desktop/src/components/plugins/PluginDetail.tsx
index ef0acfe2..ab91091f 100644
--- a/desktop/src/components/plugins/PluginDetail.tsx
+++ b/desktop/src/components/plugins/PluginDetail.tsx
@@ -4,6 +4,7 @@ import { useSessionStore } from '../../stores/sessionStore'
 import { useTranslation } from '../../i18n'
 import { useUIStore } from '../../stores/uiStore'
 import { Button } from '../shared/Button'
+import { ConfirmDialog } from '../shared/ConfirmDialog'
 import type { PluginCapabilityKey } from '../../types/plugin'
 import { SETTINGS_TAB_ID, useTabStore } from '../../stores/tabStore'
 import { useSkillStore } from '../../stores/skillStore'
@@ -36,6 +37,7 @@ export function PluginDetail() {
   const selectServer = useMcpStore((s) => s.selectServer)
   const t = useTranslation()
   const [actionKey, setActionKey] = useState<string | null>(null)
+  const [showUninstallDialog, setShowUninstallDialog] = useState(false)
 
   const activeSession = sessions.find((session) => session.id === activeSessionId)
   const currentWorkDir = activeSession?.workDir || undefined
@@ -98,11 +100,6 @@ export function PluginDetail() {
     }
   }
 
-  const confirmUninstall = () => {
-    const label = t('settings.plugins.confirmUninstall', { name: selectedPlugin.name })
-    return window.confirm(label)
-  }
-
   const openSettingsTab = (tab: 'skills' | 'agents' | 'mcp') => {
     useUIStore.getState().setPendingSettingsTab(tab)
     useTabStore.getState().openTab(SETTINGS_TAB_ID, 'Settings', 'settings')
@@ -290,8 +287,7 @@ export function PluginDetail() {
               size="sm"
               loading={isApplying && actionKey === 'uninstall'}
               onClick={() => {
-                if (!confirmUninstall()) return
-                void runAction('uninstall', () => uninstallPlugin(selectedPlugin.id, selectedPlugin.scope, false, currentWorkDir))
+                setShowUninstallDialog(true)
               }}
             >
               {t('settings.plugins.uninstall')}
@@ -483,6 +479,24 @@ export function PluginDetail() {
           </div>
         </div>
       </section>
+
+      <ConfirmDialog
+        open={showUninstallDialog}
+        onClose={() => {
+          if (isApplying && actionKey === 'uninstall') return
+          setShowUninstallDialog(false)
+        }}
+        onConfirm={async () => {
+          setShowUninstallDialog(false)
+          await runAction('uninstall', () => uninstallPlugin(selectedPlugin.id, selectedPlugin.scope, false, currentWorkDir))
+        }}
+        title={t('settings.plugins.uninstall')}
+        body={t('settings.plugins.confirmUninstall', { name: selectedPlugin.name })}
+        confirmLabel={t('settings.plugins.uninstall')}
+        cancelLabel={t('common.cancel')}
+        confirmVariant="danger"
+        loading={isApplying && actionKey === 'uninstall'}
+      />
     </div>
   )
 }
diff --git a/desktop/src/components/shared/ConfirmDialog.tsx b/desktop/src/components/shared/ConfirmDialog.tsx
new file mode 100644
index 00000000..6284547d
--- /dev/null
+++ b/desktop/src/components/shared/ConfirmDialog.tsx
@@ -0,0 +1,49 @@
+import { Modal } from './Modal'
+import { Button } from './Button'
+
+type ConfirmDialogProps = {
+  open: boolean
+  onClose: () => void
+  onConfirm: () => void | Promise<void>
+  title: string
+  body: string
+  confirmLabel: string
+  cancelLabel: string
+  confirmVariant?: 'primary' | 'danger'
+  loading?: boolean
+}
+
+export function ConfirmDialog({
+  open,
+  onClose,
+  onConfirm,
+  title,
+  body,
+  confirmLabel,
+  cancelLabel,
+  confirmVariant = 'danger',
+  loading = false,
+}: ConfirmDialogProps) {
+  return (
+    <Modal
+      open={open}
+      onClose={loading ? () => {} : onClose}
+      title={title}
+      width={460}
+      footer={(
+        <>
+          <Button variant="secondary" onClick={onClose} disabled={loading}>
+            {cancelLabel}
+          </Button>
+          <Button variant={confirmVariant} onClick={() => void onConfirm()} loading={loading}>
+            {confirmLabel}
+          </Button>
+        </>
+      )}
+    >
+      <p className="text-sm leading-6 text-[var(--color-text-secondary)]">
+        {body}
+      </p>
+    </Modal>
+  )
+}
diff --git a/desktop/src/i18n/locales/en.ts b/desktop/src/i18n/locales/en.ts
index 3a129ac9..33004574 100644
--- a/desktop/src/i18n/locales/en.ts
+++ b/desktop/src/i18n/locales/en.ts
@@ -24,6 +24,7 @@ export const en = {
   'sidebar.noMatching': 'No matching sessions',
   'sidebar.sessionListFailed': 'Session list failed to load',
   'sidebar.missingDir': 'missing dir',
+  'sidebar.confirmDelete': 'Delete this session? This cannot be undone.',
   'sidebar.allProjects': 'All projects',
   'sidebar.other': 'Other',
   'sidebar.timeGroup.today': 'Today',
diff --git a/desktop/src/i18n/locales/zh.ts b/desktop/src/i18n/locales/zh.ts
index 30b7b962..ca792fbb 100644
--- a/desktop/src/i18n/locales/zh.ts
+++ b/desktop/src/i18n/locales/zh.ts
@@ -26,6 +26,7 @@ export const zh: Record<TranslationKey, string> = {
   'sidebar.noMatching': '没有匹配的会话',
   'sidebar.sessionListFailed': '会话列表加载失败',
   'sidebar.missingDir': '目录缺失',
+  'sidebar.confirmDelete': '确定要删除这个会话吗？此操作不可撤销。',
   'sidebar.allProjects': '所有项目',
   'sidebar.other': '其他',
   'sidebar.timeGroup.today': '今天',
diff --git a/desktop/src/pages/AdapterSettings.tsx b/desktop/src/pages/AdapterSettings.tsx
index 5526234f..bc7e6769 100644
--- a/desktop/src/pages/AdapterSettings.tsx
+++ b/desktop/src/pages/AdapterSettings.tsx
@@ -4,6 +4,7 @@ import { useTranslation } from '../i18n'
 import { Input } from '../components/shared/Input'
 import { Button } from '../components/shared/Button'
 import { DirectoryPicker } from '../components/shared/DirectoryPicker'
+import { ConfirmDialog } from '../components/shared/ConfirmDialog'
 
 type ImTab = 'feishu' | 'telegram'
 
@@ -37,6 +38,8 @@ export function AdapterSettings() {
   // Pairing
   const [pairingCode, setPairingCode] = useState<string | null>(null)
   const [isGenerating, setIsGenerating] = useState(false)
+  const [pendingUnbind, setPendingUnbind] = useState<{ platform: 'telegram' | 'feishu'; userId: string | number } | null>(null)
+  const [isUnbinding, setIsUnbinding] = useState(false)
 
   useEffect(() => {
     fetchConfig()
@@ -114,10 +117,20 @@ export function AdapterSettings() {
   }, [generatePairingCode])
 
   const handleUnbind = useCallback(async (platform: 'telegram' | 'feishu', userId: string | number) => {
-    if (!confirm(t('settings.adapters.unbindConfirm'))) return
-    await removePairedUser(platform, userId)
-    await fetchConfig()
-  }, [removePairedUser, fetchConfig, t])
+    setPendingUnbind({ platform, userId })
+  }, [])
+
+  const confirmUnbind = useCallback(async () => {
+    if (!pendingUnbind) return
+    setIsUnbinding(true)
+    try {
+      await removePairedUser(pendingUnbind.platform, pendingUnbind.userId)
+      await fetchConfig()
+      setPendingUnbind(null)
+    } finally {
+      setIsUnbinding(false)
+    }
+  }, [pendingUnbind, removePairedUser, fetchConfig])
 
   // Collect all paired users across platforms
   const allPairedUsers = [
@@ -344,6 +357,21 @@ export function AdapterSettings() {
           </span>
         )}
       </div>
+
+      <ConfirmDialog
+        open={pendingUnbind !== null}
+        onClose={() => {
+          if (isUnbinding) return
+          setPendingUnbind(null)
+        }}
+        onConfirm={confirmUnbind}
+        title={t('settings.adapters.unbind')}
+        body={t('settings.adapters.unbindConfirm')}
+        confirmLabel={t('settings.adapters.unbind')}
+        cancelLabel={t('common.cancel')}
+        confirmVariant="danger"
+        loading={isUnbinding}
+      />
     </div>
   )
 }
diff --git a/desktop/src/pages/Settings.tsx b/desktop/src/pages/Settings.tsx
index dfc85afc..643d894c 100644
--- a/desktop/src/pages/Settings.tsx
+++ b/desktop/src/pages/Settings.tsx
@@ -3,6 +3,7 @@ import { useSettingsStore } from '../stores/settingsStore'
 import { useProviderStore } from '../stores/providerStore'
 import { useTranslation } from '../i18n'
 import { Modal } from '../components/shared/Modal'
+import { ConfirmDialog } from '../components/shared/ConfirmDialog'
 import { Input } from '../components/shared/Input'
 import { Button } from '../components/shared/Button'
 import type { PermissionMode, EffortLevel, ThemeMode } from '../types/settings'
@@ -116,6 +117,8 @@ function ProviderSettings() {
   const t = useTranslation()
   const [editingProvider, setEditingProvider] = useState<SavedProvider | null>(null)
   const [showCreateModal, setShowCreateModal] = useState(false)
+  const [pendingDeleteProvider, setPendingDeleteProvider] = useState<SavedProvider | null>(null)
+  const [isDeletingProvider, setIsDeletingProvider] = useState(false)
   const [testResults, setTestResults] = useState<Record<string, { loading: boolean; result?: ProviderTestResult }>>({})
 
   useEffect(() => {
@@ -130,8 +133,20 @@ function ProviderSettings() {
 
   const handleDelete = async (provider: SavedProvider) => {
     if (activeId === provider.id) return
-    if (!window.confirm(t('settings.providers.confirmDelete', { name: provider.name }))) return
-    await deleteProvider(provider.id).catch(console.error)
+    setPendingDeleteProvider(provider)
+  }
+
+  const confirmDelete = async () => {
+    if (!pendingDeleteProvider) return
+    setIsDeletingProvider(true)
+    try {
+      await deleteProvider(pendingDeleteProvider.id)
+      setPendingDeleteProvider(null)
+    } catch (error) {
+      console.error(error)
+    } finally {
+      setIsDeletingProvider(false)
+    }
   }
 
   const handleTest = async (provider: SavedProvider) => {
@@ -281,6 +296,21 @@ function ProviderSettings() {
       {editingProvider && (
         <ProviderFormModal key={editingProvider.id} open={true} onClose={() => setEditingProvider(null)} mode="edit" provider={editingProvider} presets={presets} />
       )}
+
+      <ConfirmDialog
+        open={pendingDeleteProvider !== null}
+        onClose={() => {
+          if (isDeletingProvider) return
+          setPendingDeleteProvider(null)
+        }}
+        onConfirm={confirmDelete}
+        title={t('common.delete')}
+        body={pendingDeleteProvider ? t('settings.providers.confirmDelete', { name: pendingDeleteProvider.name }) : ''}
+        confirmLabel={t('common.delete')}
+        cancelLabel={t('common.cancel')}
+        confirmVariant="danger"
+        loading={isDeletingProvider}
+      />
     </div>
   )
 }