diff --git a/ui/src/components/monitoring/proxy-status-widget.tsx b/ui/src/components/monitoring/proxy-status-widget.tsx
index cfa026df..c61ca5ee 100644
--- a/ui/src/components/monitoring/proxy-status-widget.tsx
+++ b/ui/src/components/monitoring/proxy-status-widget.tsx
@@ -27,6 +27,8 @@ import {
   FileDown,
   Check,
   AlertCircle,
+  ChevronDown,
+  ChevronUp,
 } from 'lucide-react';
 import { Button } from '@/components/ui/button';
 import { Badge } from '@/components/ui/badge';
@@ -75,6 +77,26 @@ import { RoutingGuidanceCard } from '@/components/cliproxy/routing-guidance-card
 
 type PendingInstallRisk = 'faulty' | 'experimental';
 
+const WIDGET_COLLAPSED_STORAGE_KEY = 'cliproxy-status-widget-collapsed';
+
+function readCollapsedPreference(): boolean {
+  if (typeof window === 'undefined') return false;
+  try {
+    return window.localStorage.getItem(WIDGET_COLLAPSED_STORAGE_KEY) === 'true';
+  } catch {
+    return false;
+  }
+}
+
+function persistCollapsedPreference(collapsed: boolean): void {
+  if (typeof window === 'undefined') return;
+  try {
+    window.localStorage.setItem(WIDGET_COLLAPSED_STORAGE_KEY, String(collapsed));
+  } catch {
+    // Ignore storage errors (private mode, quota, etc.)
+  }
+}
+
 function formatUptime(startedAt?: string): string {
   if (!startedAt) return '';
   const start = new Date(startedAt).getTime();
@@ -135,6 +157,7 @@ function IconButton({
           )}
           onClick={onClick}
           disabled={disabled}
+          aria-label={tooltip}
         >
           {isPending ? (
             <RefreshCw className="w-3.5 h-3.5 animate-spin" />
@@ -182,6 +205,31 @@ export function ProxyStatusWidget() {
   const [isExpanded, setIsExpanded] = useState(false);
   const [selectedVersion, setSelectedVersion] = useState<string>('');
 
+  // Whole-widget collapse so the sidebar provider list keeps the vertical space
+  const [isCollapsed, setIsCollapsed] = useState<boolean>(readCollapsedPreference);
+
+  const handleToggleCollapsed = () => {
+    const next = !isCollapsed;
+    setIsCollapsed(next);
+    // Collapsing also closes version management so it cannot stay open but hidden
+    if (next) setIsExpanded(false);
+    persistCollapsedPreference(next);
+  };
+
+  // Opening version settings from a collapsed widget must reveal the section
+  const handleToggleVersionSettings = () => {
+    const next = !isExpanded;
+    setIsExpanded(next);
+    if (next && isCollapsed) {
+      setIsCollapsed(false);
+      persistCollapsedPreference(false);
+    }
+  };
+
+  const collapseTooltip = isCollapsed
+    ? t('proxyStatusWidget.tooltipExpandWidget')
+    : t('proxyStatusWidget.tooltipCollapseWidget');
+
   // Confirmation dialog state for risky versions
   const [showUnstableConfirm, setShowUnstableConfirm] = useState(false);
   const [pendingInstallVersion, setPendingInstallVersion] = useState<string | null>(null);
@@ -325,30 +373,50 @@ export function ProxyStatusWidget() {
               {t('proxyStatusWidget.active')}
             </Badge>
           </div>
-          <Activity className="w-3 h-3 text-blue-600" />
-        </div>
-
-        <div className="mt-2 text-xs text-muted-foreground">
-          <div className="flex items-center gap-1 mb-1">
-            <span className="font-mono">{remoteDisplayHost}</span>
+          <div className="flex items-center gap-1">
+            <Activity className="w-3 h-3 text-blue-600" />
+            <Button
+              variant="ghost"
+              size="sm"
+              className="h-7 w-7 p-0"
+              onClick={handleToggleCollapsed}
+              title={collapseTooltip}
+              aria-label={collapseTooltip}
+            >
+              {isCollapsed ? (
+                <ChevronDown className="w-3.5 h-3.5" />
+              ) : (
+                <ChevronUp className="w-3.5 h-3.5" />
+              )}
+            </Button>
           </div>
-          <p className="text-[10px] text-muted-foreground/70 leading-tight">
-            {t('proxyStatusWidget.trafficAutoRouted')}
-          </p>
         </div>
 
-        <RoutingGuidanceCard
-          key={`remote:${routingState?.strategy ?? 'round-robin'}:${effectiveSessionAffinityState?.enabled ?? 'na'}:${effectiveSessionAffinityState?.ttl ?? 'na'}:${effectiveSessionAffinityState?.manageable ?? 'na'}`}
-          compact
-          className="mt-3"
-          state={routingState}
-          sessionAffinityState={effectiveSessionAffinityState}
-          isLoading={routingLoading || sessionAffinityLoading}
-          isSaving={isSavingRoutingConfig}
-          error={routingConfigError}
-          onApply={(strategy) => updateRouting.mutate(strategy)}
-          onApplyAffinity={(data) => updateSessionAffinity.mutate(data)}
-        />
+        {!isCollapsed && (
+          <>
+            <div className="mt-2 text-xs text-muted-foreground">
+              <div className="flex items-center gap-1 mb-1">
+                <span className="font-mono">{remoteDisplayHost}</span>
+              </div>
+              <p className="text-[10px] text-muted-foreground/70 leading-tight">
+                {t('proxyStatusWidget.trafficAutoRouted')}
+              </p>
+            </div>
+
+            <RoutingGuidanceCard
+              key={`remote:${routingState?.strategy ?? 'round-robin'}:${effectiveSessionAffinityState?.enabled ?? 'na'}:${effectiveSessionAffinityState?.ttl ?? 'na'}:${effectiveSessionAffinityState?.manageable ?? 'na'}`}
+              compact
+              className="mt-3"
+              state={routingState}
+              sessionAffinityState={effectiveSessionAffinityState}
+              isLoading={routingLoading || sessionAffinityLoading}
+              isSaving={isSavingRoutingConfig}
+              error={routingConfigError}
+              onApply={(strategy) => updateRouting.mutate(strategy)}
+              onApplyAffinity={(data) => updateSessionAffinity.mutate(data)}
+            />
+          </>
+        )}
       </div>
     );
   }
@@ -413,9 +481,14 @@ export function ProxyStatusWidget() {
                   ? t('proxyStatusWidget.tooltipClose')
                   : t('proxyStatusWidget.tooltipVersionSettings')
               }
-              onClick={() => setIsExpanded(!isExpanded)}
+              onClick={handleToggleVersionSettings}
               className={isExpanded ? 'bg-muted' : undefined}
             />
+            <IconButton
+              icon={isCollapsed ? ChevronDown : ChevronUp}
+              tooltip={collapseTooltip}
+              onClick={handleToggleCollapsed}
+            />
           </div>
         </div>
 
@@ -458,7 +531,7 @@ export function ProxyStatusWidget() {
         )}
 
         {/* Stats row when running */}
-        {isRunning && status && (
+        {!isCollapsed && isRunning && status && (
           <div className="mt-2 flex items-center gap-4 text-xs text-muted-foreground">
             <span className="flex items-center gap-1">
               {t('proxyStatusWidget.port', { port: status.port })}
@@ -478,35 +551,39 @@ export function ProxyStatusWidget() {
           </div>
         )}
 
-        {/* Sync status row */}
-        <div className="mt-2 flex items-center gap-1.5 text-xs">
-          {isSyncConfigured ? (
-            <Check className="w-3 h-3 text-green-600 dark:text-green-400" />
-          ) : (
-            <AlertCircle className="w-3 h-3 text-muted-foreground" />
-          )}
-          <span
-            className={cn(
-              'text-xs',
-              isSyncConfigured ? 'text-green-600 dark:text-green-400' : 'text-muted-foreground'
-            )}
-          >
-            {syncStatusText}
-          </span>
-        </div>
+        {!isCollapsed && (
+          <>
+            {/* Sync status row */}
+            <div className="mt-2 flex items-center gap-1.5 text-xs">
+              {isSyncConfigured ? (
+                <Check className="w-3 h-3 text-green-600 dark:text-green-400" />
+              ) : (
+                <AlertCircle className="w-3 h-3 text-muted-foreground" />
+              )}
+              <span
+                className={cn(
+                  'text-xs',
+                  isSyncConfigured ? 'text-green-600 dark:text-green-400' : 'text-muted-foreground'
+                )}
+              >
+                {syncStatusText}
+              </span>
+            </div>
 
-        <RoutingGuidanceCard
-          key={`local:${routingState?.strategy ?? 'round-robin'}:${effectiveSessionAffinityState?.enabled ?? 'na'}:${effectiveSessionAffinityState?.ttl ?? 'na'}:${effectiveSessionAffinityState?.manageable ?? 'na'}`}
-          compact
-          className="mt-3"
-          state={routingState}
-          sessionAffinityState={effectiveSessionAffinityState}
-          isLoading={routingLoading || sessionAffinityLoading}
-          isSaving={isSavingRoutingConfig}
-          error={routingConfigError}
-          onApply={(strategy) => updateRouting.mutate(strategy)}
-          onApplyAffinity={(data) => updateSessionAffinity.mutate(data)}
-        />
+            <RoutingGuidanceCard
+              key={`local:${routingState?.strategy ?? 'round-robin'}:${effectiveSessionAffinityState?.enabled ?? 'na'}:${effectiveSessionAffinityState?.ttl ?? 'na'}:${effectiveSessionAffinityState?.manageable ?? 'na'}`}
+              compact
+              className="mt-3"
+              state={routingState}
+              sessionAffinityState={effectiveSessionAffinityState}
+              isLoading={routingLoading || sessionAffinityLoading}
+              isSaving={isSavingRoutingConfig}
+              error={routingConfigError}
+              onApply={(strategy) => updateRouting.mutate(strategy)}
+              onApplyAffinity={(data) => updateSessionAffinity.mutate(data)}
+            />
+          </>
+        )}
 
         {/* Expanded section: Version Management (available even when not running) */}
         <Collapsible open={isExpanded} onOpenChange={setIsExpanded}>
diff --git a/ui/src/lib/i18n.ts b/ui/src/lib/i18n.ts
index 6ac2da8a..d8bdc792 100644
--- a/ui/src/lib/i18n.ts
+++ b/ui/src/lib/i18n.ts
@@ -428,6 +428,8 @@ const resources = {
         tooltipStop: 'Stop',
         tooltipClose: 'Close',
         tooltipVersionSettings: 'Version settings',
+        tooltipCollapseWidget: 'Collapse',
+        tooltipExpandWidget: 'Expand',
         versionManagement: 'Version Management',
         selectVersionPlaceholder: 'Select version to install...',
         stable: '(stable)',
@@ -3180,6 +3182,8 @@ const resources = {
         tooltipStop: 'Parar',
         tooltipClose: 'Fechar',
         tooltipVersionSettings: 'Configurações de versão',
+        tooltipCollapseWidget: 'Recolher',
+        tooltipExpandWidget: 'Expandir',
         versionManagement: 'Gerenciamento de Versão',
         selectVersionPlaceholder: 'Selecione a versão a instalar...',
         stable: '(estável)',
@@ -5962,6 +5966,8 @@ const resources = {
         tooltipStop: '停止',
         tooltipClose: '关闭',
         tooltipVersionSettings: '版本设置',
+        tooltipCollapseWidget: '收起',
+        tooltipExpandWidget: '展开',
         versionManagement: '版本管理',
         selectVersionPlaceholder: '选择要安装的版本...',
         stable: '（稳定版）',
@@ -8595,6 +8601,8 @@ const resources = {
         tooltipStop: 'Dừng lại',
         tooltipClose: 'Đóng',
         tooltipVersionSettings: 'Cài đặt phiên bản',
+        tooltipCollapseWidget: 'Thu gọn',
+        tooltipExpandWidget: 'Mở rộng',
         versionManagement: 'Quản lý phiên bản',
         selectVersionPlaceholder: 'Chọn phiên bản để cài đặt...',
         stable: '(ổn định)',
@@ -11329,6 +11337,8 @@ const resources = {
         tooltipStop: '停止',
         tooltipClose: '閉じる',
         tooltipVersionSettings: 'バージョン設定',
+        tooltipCollapseWidget: '折りたたむ',
+        tooltipExpandWidget: '展開',
         versionManagement: 'バージョン管理',
         selectVersionPlaceholder: 'インストールするバージョンを選択...',
         stable: '(安定版)',
@@ -14087,6 +14097,8 @@ const resources = {
         tooltipStop: '중지',
         tooltipClose: '닫기',
         tooltipVersionSettings: '버전 설정',
+        tooltipCollapseWidget: '접기',
+        tooltipExpandWidget: '펼치기',
         versionManagement: '버전 관리',
         selectVersionPlaceholder: '설치할 버전 선택...',
         stable: '(안정)',
diff --git a/ui/tests/unit/components/monitoring/proxy-status-widget.test.tsx b/ui/tests/unit/components/monitoring/proxy-status-widget.test.tsx
new file mode 100644
index 00000000..55893a05
--- /dev/null
+++ b/ui/tests/unit/components/monitoring/proxy-status-widget.test.tsx
@@ -0,0 +1,97 @@
+import { beforeEach, describe, expect, it, vi } from 'vitest';
+import { fireEvent, render, screen } from '../../../setup/test-utils';
+
+const COLLAPSED_STORAGE_KEY = 'cliproxy-status-widget-collapsed';
+
+const mocks = vi.hoisted(() => ({
+  noopMutation: () => ({ mutate: vi.fn(), isPending: false }),
+}));
+
+vi.mock('@/hooks/use-cliproxy', () => ({
+  useProxyStatus: () => ({
+    data: { running: true, port: 8317, sessionCount: 1 },
+    isLoading: false,
+  }),
+  useCliproxyUpdateCheck: () => ({ data: { backendLabel: 'CLIProxy', currentVersion: '7.2.137' } }),
+  useCliproxyVersions: () => ({ data: undefined, isLoading: false }),
+  useCliproxyRoutingStrategy: () => ({ data: undefined, isLoading: false, error: null }),
+  useCliproxySessionAffinity: () => ({ data: undefined, isLoading: false, error: null }),
+  useUpdateCliproxyRoutingStrategy: mocks.noopMutation,
+  useUpdateCliproxySessionAffinity: mocks.noopMutation,
+  useStartProxy: mocks.noopMutation,
+  useStopProxy: mocks.noopMutation,
+  useRestartProxy: mocks.noopMutation,
+  useInstallVersion: mocks.noopMutation,
+}));
+
+vi.mock('@/hooks/use-cliproxy-sync', () => ({
+  useSyncStatus: () => ({ data: { configured: true } }),
+  useExecuteSync: () => ({ mutate: vi.fn(), isPending: false }),
+}));
+
+vi.mock('@/lib/api-client', () => ({
+  api: {
+    cliproxyServer: {
+      get: () => Promise.resolve({ remote: { enabled: false, host: '' } }),
+    },
+  },
+}));
+
+vi.mock('@/components/cliproxy/routing-guidance-card', () => ({
+  RoutingGuidanceCard: () => <div data-testid="routing-guidance-card" />,
+}));
+
+import { ProxyStatusWidget } from '@/components/monitoring/proxy-status-widget';
+
+describe('ProxyStatusWidget collapse', () => {
+  beforeEach(() => {
+    vi.mocked(window.localStorage.getItem).mockReturnValue(null);
+    vi.mocked(window.localStorage.setItem).mockClear();
+  });
+
+  it('shows the routing and status detail by default', () => {
+    render(<ProxyStatusWidget />);
+
+    expect(screen.getByTestId('routing-guidance-card')).toBeInTheDocument();
+    expect(screen.getByText('v7.2.137')).toBeInTheDocument();
+  });
+
+  it('hides the detail and persists the preference when collapsed', () => {
+    render(<ProxyStatusWidget />);
+
+    fireEvent.click(screen.getByRole('button', { name: 'Collapse' }));
+
+    expect(screen.queryByTestId('routing-guidance-card')).toBeNull();
+    expect(window.localStorage.setItem).toHaveBeenCalledWith(COLLAPSED_STORAGE_KEY, 'true');
+  });
+
+  it('keeps the status row and version visible while collapsed', () => {
+    render(<ProxyStatusWidget />);
+
+    fireEvent.click(screen.getByRole('button', { name: 'Collapse' }));
+
+    expect(screen.getByText('CLIProxy')).toBeInTheDocument();
+    expect(screen.getByText('v7.2.137')).toBeInTheDocument();
+    expect(screen.getByRole('button', { name: 'Expand' })).toBeInTheDocument();
+  });
+
+  it('starts collapsed when the stored preference says so', () => {
+    vi.mocked(window.localStorage.getItem).mockReturnValue('true');
+
+    render(<ProxyStatusWidget />);
+
+    expect(screen.queryByTestId('routing-guidance-card')).toBeNull();
+    expect(screen.getByRole('button', { name: 'Expand' })).toBeInTheDocument();
+  });
+
+  it('reveals the detail again when version settings are opened while collapsed', () => {
+    vi.mocked(window.localStorage.getItem).mockReturnValue('true');
+
+    render(<ProxyStatusWidget />);
+
+    fireEvent.click(screen.getByRole('button', { name: 'Version settings' }));
+
+    expect(screen.getByTestId('routing-guidance-card')).toBeInTheDocument();
+    expect(window.localStorage.setItem).toHaveBeenCalledWith(COLLAPSED_STORAGE_KEY, 'false');
+  });
+});