diff --git a/tests/unit/cliproxy/backend-ui-default-ports-sync.test.ts b/tests/unit/cliproxy/backend-ui-default-ports-sync.test.ts
index c8fe0d1d..5670eecf 100644
--- a/tests/unit/cliproxy/backend-ui-default-ports-sync.test.ts
+++ b/tests/unit/cliproxy/backend-ui-default-ports-sync.test.ts
@@ -19,9 +19,12 @@ import {
 } from '../../../ui/src/lib/default-ports';
 import {
   CLIPROXY_PROVIDERS as UI_CLIPROXY_PROVIDERS,
+  CORE_CLIPROXY_PROVIDERS as UI_CORE_CLIPROXY_PROVIDERS,
   DEVICE_CODE_PROVIDERS as UI_DEVICE_CODE_PROVIDERS,
+  PLUS_EXTRA_CLIPROXY_PROVIDERS as UI_PLUS_EXTRA_CLIPROXY_PROVIDERS,
   PROVIDER_METADATA as UI_PROVIDER_METADATA,
 } from '../../../ui/src/lib/provider-config';
+import { PLUS_ONLY_PROVIDERS as BACKEND_PLUS_ONLY_PROVIDERS } from '../../../src/cliproxy/types';
 
 function sorted(values: readonly string[]): string[] {
   return [...values].sort((a, b) => a.localeCompare(b));
@@ -44,6 +47,17 @@ describe('Default Port Sync', () => {
     expect(sorted(UI_DEVICE_CODE_PROVIDERS)).toEqual(sorted(getProvidersByOAuthFlow('device_code')));
   });
 
+  test('plus-extra providers are synced between backend and UI', () => {
+    expect(sorted(UI_PLUS_EXTRA_CLIPROXY_PROVIDERS)).toEqual(sorted(BACKEND_PLUS_ONLY_PROVIDERS));
+    expect(sorted(UI_CORE_CLIPROXY_PROVIDERS)).toEqual(
+      sorted(
+        BACKEND_CLIPROXY_PROVIDER_IDS.filter(
+          (provider) => !BACKEND_PLUS_ONLY_PROVIDERS.includes(provider)
+        )
+      )
+    );
+  });
+
   test('Provider display names are synced between backend and UI', () => {
     for (const provider of BACKEND_CLIPROXY_PROVIDER_IDS) {
       expect(UI_PROVIDER_METADATA[provider].displayName).toBe(getBackendProviderDisplayName(provider));
diff --git a/ui/src/components/cliproxy/cliproxy-dialog.tsx b/ui/src/components/cliproxy/cliproxy-dialog.tsx
index b221b8a6..3256f236 100644
--- a/ui/src/components/cliproxy/cliproxy-dialog.tsx
+++ b/ui/src/components/cliproxy/cliproxy-dialog.tsx
@@ -19,7 +19,13 @@ import { useTranslation } from 'react-i18next';
 import { useCreateVariant, useCliproxyAuth } from '@/hooks/use-cliproxy';
 import { usePrivacy } from '@/contexts/privacy-context';
 import { formatAccountDisplayName } from '@/lib/account-identity';
-import { CLIPROXY_PROVIDERS, getProviderDisplayName } from '@/lib/provider-config';
+import {
+  CLIPROXY_PROVIDERS,
+  CLIPROXY_PROVIDER_SECTIONS,
+  getProviderDisplayName,
+  getProviderSection,
+  isPlusExtraProvider,
+} from '@/lib/provider-config';
 import { isDeniedAgyModelId } from '@/lib/utils';
 
 const singleProviderSchema = z.object({
@@ -104,6 +110,8 @@ export function CliproxyDialog({ open, onClose }: CliproxyDialogProps) {
   });
 
   const selectedProvider = useWatch({ control: singleForm.control, name: 'provider' });
+  const compositeTiers = useWatch({ control: compositeForm.control, name: 'tiers' });
+  const selectedProviderSection = getProviderSection(selectedProvider);
   const providerAuth = authData?.authStatus.find((s) => s.provider === selectedProvider);
   const providerAccounts = providerAuth?.accounts || [];
 
@@ -197,10 +205,16 @@ export function CliproxyDialog({ open, onClose }: CliproxyDialogProps) {
                   className="flex h-9 w-full rounded-md border border-input bg-transparent px-3 py-1 text-sm shadow-sm transition-colors focus-visible:outline-none focus-visible:ring-1 focus-visible:ring-ring"
                 >
                   <option value="">{t('cliproxyDialog.selectProvider')}</option>
-                  {providerOptions.map((opt) => (
-                    <option key={opt.value} value={opt.value}>
-                      {opt.label}
-                    </option>
+                  {CLIPROXY_PROVIDER_SECTIONS.map((section) => (
+                    <optgroup key={section.id} label={section.label}>
+                      {providerOptions
+                        .filter((opt) => section.providers.includes(opt.value))
+                        .map((opt) => (
+                          <option key={opt.value} value={opt.value}>
+                            {opt.label}
+                          </option>
+                        ))}
+                    </optgroup>
                   ))}
                 </select>
                 {singleForm.formState.errors.provider && (
@@ -208,6 +222,14 @@ export function CliproxyDialog({ open, onClose }: CliproxyDialogProps) {
                     {singleForm.formState.errors.provider.message}
                   </span>
                 )}
+                {selectedProviderSection && (
+                  <p className="mt-2 text-xs text-muted-foreground">
+                    {selectedProviderSection.hint}
+                    {isPlusExtraProvider(selectedProvider)
+                      ? ' Requires the optional Plus backend while that track remains community-maintained.'
+                      : ''}
+                  </p>
+                )}
               </div>
 
               {selectedProvider && providerAccounts.length > 0 && (
@@ -297,12 +319,26 @@ export function CliproxyDialog({ open, onClose }: CliproxyDialogProps) {
                           {...compositeForm.register(`tiers.${tier}.provider`)}
                           className="flex h-9 w-full rounded-md border border-input bg-transparent px-3 py-1 text-sm shadow-sm transition-colors focus-visible:outline-none focus-visible:ring-1 focus-visible:ring-ring"
                         >
-                          {providerOptions.map((opt) => (
-                            <option key={opt.value} value={opt.value}>
-                              {opt.label}
-                            </option>
+                          {CLIPROXY_PROVIDER_SECTIONS.map((section) => (
+                            <optgroup key={section.id} label={section.label}>
+                              {providerOptions
+                                .filter((opt) => section.providers.includes(opt.value))
+                                .map((opt) => (
+                                  <option key={opt.value} value={opt.value}>
+                                    {opt.label}
+                                  </option>
+                                ))}
+                            </optgroup>
                           ))}
                         </select>
+                        {compositeTiers?.[tier]?.provider && (
+                          <p className="mt-2 text-xs text-muted-foreground">
+                            {getProviderSection(compositeTiers[tier].provider)?.hint}
+                            {isPlusExtraProvider(compositeTiers[tier].provider)
+                              ? ' Requires the optional Plus backend while that track remains community-maintained.'
+                              : ''}
+                          </p>
+                        )}
                       </div>
                       <div>
                         <Label htmlFor={`${tier}-model`}>{t('cliproxyDialog.model')}</Label>
diff --git a/ui/src/components/cliproxy/cliproxy-edit-dialog.tsx b/ui/src/components/cliproxy/cliproxy-edit-dialog.tsx
index 9274e975..16825e7f 100644
--- a/ui/src/components/cliproxy/cliproxy-edit-dialog.tsx
+++ b/ui/src/components/cliproxy/cliproxy-edit-dialog.tsx
@@ -3,7 +3,7 @@
  * Phase 05: Dashboard UI full CRUD for composite variants
  */
 
-import { useForm } from 'react-hook-form';
+import { useForm, useWatch } from 'react-hook-form';
 import { zodResolver } from '@hookform/resolvers/zod';
 import * as z from 'zod';
 import { useEffect } from 'react';
@@ -15,7 +15,13 @@ import { Tabs, TabsList, TabsTrigger, TabsContent } from '@/components/ui/tabs';
 import { toast } from 'sonner';
 import { useTranslation } from 'react-i18next';
 import { useUpdateVariant } from '@/hooks/use-cliproxy';
-import { CLIPROXY_PROVIDERS, getProviderDisplayName } from '@/lib/provider-config';
+import {
+  CLIPROXY_PROVIDERS,
+  CLIPROXY_PROVIDER_SECTIONS,
+  getProviderDisplayName,
+  getProviderSection,
+  isPlusExtraProvider,
+} from '@/lib/provider-config';
 import type { UpdateVariant, Variant } from '@/lib/api-client';
 import { isDeniedAgyModelId } from '@/lib/utils';
 
@@ -137,6 +143,8 @@ export function CliproxyEditDialog({ variant, open, onOpenChange }: CliproxyEdit
   const compositeForm = useForm<CompositeFormData>({
     resolver: zodResolver(compositeSchema),
   });
+  const selectedProvider = useWatch({ control: singleForm.control, name: 'provider' });
+  const compositeTiers = useWatch({ control: compositeForm.control, name: 'tiers' });
 
   // Pre-populate form when variant changes
   useEffect(() => {
@@ -318,12 +326,26 @@ export function CliproxyEditDialog({ variant, open, onOpenChange }: CliproxyEdit
                         {...compositeForm.register(`tiers.${tier}.provider`)}
                         className="flex h-9 w-full rounded-md border border-input bg-transparent px-3 py-1 text-sm shadow-sm transition-colors focus-visible:outline-none focus-visible:ring-1 focus-visible:ring-ring"
                       >
-                        {providerOptions.map((opt) => (
-                          <option key={opt.value} value={opt.value}>
-                            {opt.label}
-                          </option>
+                        {CLIPROXY_PROVIDER_SECTIONS.map((section) => (
+                          <optgroup key={section.id} label={section.label}>
+                            {providerOptions
+                              .filter((opt) => section.providers.includes(opt.value))
+                              .map((opt) => (
+                                <option key={opt.value} value={opt.value}>
+                                  {opt.label}
+                                </option>
+                              ))}
+                          </optgroup>
                         ))}
                       </select>
+                      {compositeTiers?.[tier]?.provider && (
+                        <p className="mt-2 text-xs text-muted-foreground">
+                          {getProviderSection(compositeTiers[tier].provider)?.hint}
+                          {isPlusExtraProvider(compositeTiers[tier].provider)
+                            ? ' Requires the optional Plus backend while that track remains community-maintained.'
+                            : ''}
+                        </p>
+                      )}
                     </div>
                     <div>
                       <Label htmlFor={`edit-${tier}-model`}>{t('cliproxyDialog.model')}</Label>
@@ -399,12 +421,26 @@ export function CliproxyEditDialog({ variant, open, onOpenChange }: CliproxyEdit
                 {...singleForm.register('provider')}
                 className="flex h-9 w-full rounded-md border border-input bg-transparent px-3 py-1 text-sm shadow-sm transition-colors focus-visible:outline-none focus-visible:ring-1 focus-visible:ring-ring"
               >
-                {providerOptions.map((opt) => (
-                  <option key={opt.value} value={opt.value}>
-                    {opt.label}
-                  </option>
+                {CLIPROXY_PROVIDER_SECTIONS.map((section) => (
+                  <optgroup key={section.id} label={section.label}>
+                    {providerOptions
+                      .filter((opt) => section.providers.includes(opt.value))
+                      .map((opt) => (
+                        <option key={opt.value} value={opt.value}>
+                          {opt.label}
+                        </option>
+                      ))}
+                  </optgroup>
                 ))}
               </select>
+              {selectedProvider && (
+                <p className="mt-2 text-xs text-muted-foreground">
+                  {getProviderSection(selectedProvider)?.hint}
+                  {isPlusExtraProvider(selectedProvider)
+                    ? ' Requires the optional Plus backend while that track remains community-maintained.'
+                    : ''}
+                </p>
+              )}
             </div>
 
             <div>
diff --git a/ui/src/components/cliproxy/provider-editor/provider-info-tab.tsx b/ui/src/components/cliproxy/provider-editor/provider-info-tab.tsx
index 2ea26cdf..22edadaa 100644
--- a/ui/src/components/cliproxy/provider-editor/provider-info-tab.tsx
+++ b/ui/src/components/cliproxy/provider-editor/provider-info-tab.tsx
@@ -10,6 +10,7 @@ import { Info, Shield } from 'lucide-react';
 import { UsageCommand } from './usage-command';
 import type { SettingsResponse } from './types';
 import type { AuthStatus, CliTarget } from '@/lib/api-client';
+import { getProviderSection, isPlusExtraProvider } from '@/lib/provider-config';
 import { useTranslation } from 'react-i18next';
 
 interface ProviderInfoTabProps {
@@ -33,6 +34,7 @@ export function ProviderInfoTab({
   const resolvedTarget = defaultTarget || 'claude';
   const isDroidTarget = resolvedTarget === 'droid';
   const isCodexProvider = provider === 'codex';
+  const providerSection = getProviderSection(provider);
   const managementPrefix =
     resolvedTarget === 'claude' ? `ccs ${provider}` : `ccs ${provider} --target claude`;
   const changeModelCommand = `${managementPrefix} --config`;
@@ -101,6 +103,20 @@ export function ProviderInfoTab({
               </span>
               <span className="font-mono">{resolvedTarget}</span>
             </div>
+            {providerSection && (
+              <div className="grid grid-cols-[100px_1fr] gap-2 text-sm items-start">
+                <span className="font-medium text-muted-foreground">Track</span>
+                <div className="space-y-1">
+                  <span className="font-mono">{providerSection.label}</span>
+                  <p className="text-xs text-muted-foreground">
+                    {providerSection.hint}
+                    {isPlusExtraProvider(provider)
+                      ? ' Requires the optional Plus backend while that track remains community-maintained.'
+                      : ''}
+                  </p>
+                </div>
+              </div>
+            )}
           </div>
         </div>
 
diff --git a/ui/src/lib/provider-config.ts b/ui/src/lib/provider-config.ts
index 3500e4a4..7f824ce0 100644
--- a/ui/src/lib/provider-config.ts
+++ b/ui/src/lib/provider-config.ts
@@ -10,6 +10,7 @@ import {
   getProvidersByOAuthFlow,
 } from '../../../src/cliproxy/provider-capabilities';
 import type { AiProviderFamilyId, AiProviderModelAlias } from '../../../src/cliproxy/ai-providers';
+import { PLUS_ONLY_PROVIDERS } from '../../../src/cliproxy/types';
 import i18n from './i18n';
 
 // Monorepo contract: UI consumes provider capability constants directly from backend
@@ -19,6 +20,39 @@ import i18n from './i18n';
 export const CLIPROXY_PROVIDERS = CLIPROXY_PROVIDER_IDS;
 export type CLIProxyProvider = (typeof CLIPROXY_PROVIDERS)[number];
 export type ProviderVisualId = CLIProxyProvider | 'openai' | 'vertex';
+export type CLIProxyProviderSectionId = 'core' | 'plus-extra';
+
+export interface CLIProxyProviderSection {
+  id: CLIProxyProviderSectionId;
+  label: string;
+  hint: string;
+  providers: readonly CLIProxyProvider[];
+}
+
+const PLUS_ONLY_PROVIDER_SET = new Set<CLIProxyProvider>(PLUS_ONLY_PROVIDERS);
+
+export const CORE_CLIPROXY_PROVIDERS: readonly CLIProxyProvider[] = Object.freeze(
+  CLIPROXY_PROVIDERS.filter((provider) => !PLUS_ONLY_PROVIDER_SET.has(provider))
+);
+
+export const PLUS_EXTRA_CLIPROXY_PROVIDERS: readonly CLIProxyProvider[] = Object.freeze(
+  CLIPROXY_PROVIDERS.filter((provider) => PLUS_ONLY_PROVIDER_SET.has(provider))
+);
+
+export const CLIPROXY_PROVIDER_SECTIONS: readonly CLIProxyProviderSection[] = Object.freeze([
+  {
+    id: 'core',
+    label: 'Core / original backend',
+    hint: 'Default, always-available provider track',
+    providers: CORE_CLIPROXY_PROVIDERS,
+  },
+  {
+    id: 'plus-extra',
+    label: 'Plus extras / community-maintained',
+    hint: 'Still supported, but separated from the default backend for now',
+    providers: PLUS_EXTRA_CLIPROXY_PROVIDERS,
+  },
+]);
 
 /** Check if a string is a backend-supported CLIProxy provider. */
 export function isValidProvider(provider: string): provider is CLIProxyProvider {
@@ -259,6 +293,35 @@ export function getProviderDisplayName(provider: unknown): string {
   return PROVIDER_NAMES[normalized] || i18n.t('toasts.providerUnknown', { provider: normalized });
 }
 
+export function isPlusExtraProvider(provider: unknown): boolean {
+  const normalized = normalizeProviderInput(provider);
+  return isValidProvider(normalized) && PLUS_ONLY_PROVIDER_SET.has(normalized);
+}
+
+export function getProviderSection(provider: unknown): CLIProxyProviderSection | null {
+  const normalized = normalizeProviderInput(provider);
+  if (!isValidProvider(normalized)) {
+    return null;
+  }
+
+  return (
+    CLIPROXY_PROVIDER_SECTIONS.find((section) => section.providers.includes(normalized)) || null
+  );
+}
+
+export function groupProvidersBySection<T>(
+  items: readonly T[],
+  getProvider: (item: T) => unknown
+): Array<CLIProxyProviderSection & { items: T[] }> {
+  return CLIPROXY_PROVIDER_SECTIONS.map((section) => ({
+    ...section,
+    items: items.filter((item) => {
+      const normalized = normalizeProviderInput(getProvider(item));
+      return isValidProvider(normalized) && section.providers.includes(normalized);
+    }),
+  })).filter((section) => section.items.length > 0);
+}
+
 /** Map provider to user-facing short description */
 export function getProviderDescription(provider: unknown): string {
   const normalized = normalizeProviderInput(provider);
diff --git a/ui/src/pages/cliproxy.tsx b/ui/src/pages/cliproxy.tsx
index 6aba8344..f48374e2 100644
--- a/ui/src/pages/cliproxy.tsx
+++ b/ui/src/pages/cliproxy.tsx
@@ -33,7 +33,11 @@ import {
 } from '@/hooks/use-cliproxy';
 import type { AuthStatus, Variant } from '@/lib/api-client';
 import { buildUiCatalogs } from '@/lib/model-catalogs';
-import { getProviderDisplayName, isValidProvider } from '@/lib/provider-config';
+import {
+  getProviderDisplayName,
+  groupProvidersBySection,
+  isValidProvider,
+} from '@/lib/provider-config';
 import { cn } from '@/lib/utils';
 import { useTranslation } from 'react-i18next';
 
@@ -261,6 +265,10 @@ export function CliproxyPage() {
   });
 
   const providers = useMemo(() => authData?.authStatus || [], [authData?.authStatus]);
+  const providerSections = useMemo(
+    () => groupProvidersBySection(providers, (status) => status.provider),
+    [providers]
+  );
   const isRemoteMode = authData?.source === 'remote';
   const variants = useMemo(() => variantsData?.variants || [], [variantsData?.variants]);
   const catalogs = useMemo(() => buildUiCatalogs(catalogData?.catalogs), [catalogData?.catalogs]);
@@ -393,14 +401,28 @@ export function CliproxyPage() {
                 ))}
               </div>
             ) : (
-              <div className="space-y-1">
-                {providers.map((status) => (
-                  <ProviderSidebarItem
-                    key={status.provider}
-                    status={status}
-                    isSelected={effectiveProvider === status.provider}
-                    onSelect={() => handleSelectProvider(status.provider)}
-                  />
+              <div className="space-y-4">
+                {providerSections.map((section) => (
+                  <div key={section.id} className="space-y-1">
+                    <div className="px-3">
+                      <div className="text-[11px] font-medium uppercase tracking-wide text-muted-foreground">
+                        {section.label}
+                      </div>
+                      <p className="mt-1 text-[11px] leading-relaxed text-muted-foreground">
+                        {section.hint}
+                      </p>
+                    </div>
+                    <div className="space-y-1">
+                      {section.items.map((status) => (
+                        <ProviderSidebarItem
+                          key={status.provider}
+                          status={status}
+                          isSelected={effectiveProvider === status.provider}
+                          onSelect={() => handleSelectProvider(status.provider)}
+                        />
+                      ))}
+                    </div>
+                  </div>
                 ))}
               </div>
             )}
diff --git a/ui/src/pages/settings/sections/proxy/index.tsx b/ui/src/pages/settings/sections/proxy/index.tsx
index 76ec80e1..f5b237ae 100644
--- a/ui/src/pages/settings/sections/proxy/index.tsx
+++ b/ui/src/pages/settings/sections/proxy/index.tsx
@@ -29,15 +29,18 @@ import { ProxyStatusWidget } from '@/components/monitoring/proxy-status-widget';
 import { api } from '@/lib/api-client';
 import { CLIPROXY_DEFAULT_PORT } from '@/lib/preset-utils';
 import { RISK_ACK_PHRASE } from '@/components/account/antigravity-responsibility-constants';
+import {
+  CORE_CLIPROXY_PROVIDERS,
+  PLUS_EXTRA_CLIPROXY_PROVIDERS,
+  getProviderDisplayName,
+  isPlusExtraProvider,
+} from '@/lib/provider-config';
 import { toast } from 'sonner';
 import { useTranslation } from 'react-i18next';
 
 /** LocalStorage key for debug mode preference */
 const DEBUG_MODE_KEY = 'ccs_debug_mode';
 
-/** Providers only available on CLIProxyAPIPlus */
-const PLUS_ONLY_PROVIDERS = ['kiro', 'ghcp', 'cursor', 'gitlab', 'codebuddy', 'kilo'];
-
 function normalizeRiskAckPhrase(value: string): string {
   return value.trim().replace(/\s+/g, ' ').toUpperCase();
 }
@@ -196,6 +199,8 @@ export default function ProxySection() {
   const updateBackendMutation = useUpdateBackend();
   const { data: proxyStatus } = useProxyStatus();
   const isProxyRunning = proxyStatus?.running ?? false;
+  const coreProviderNames = CORE_CLIPROXY_PROVIDERS.map(getProviderDisplayName).join(', ');
+  const plusProviderNames = PLUS_EXTRA_CLIPROXY_PROVIDERS.map(getProviderDisplayName).join(', ');
 
   // Fetch backend setting
   const fetchBackend = useCallback(async () => {
@@ -211,7 +216,7 @@ export default function ProxySection() {
   const checkPlusOnlyVariants = useCallback(async () => {
     try {
       const result = await api.cliproxy.list();
-      const hasIncompatible = result.variants.some((v) => PLUS_ONLY_PROVIDERS.includes(v.provider));
+      const hasIncompatible = result.variants.some((v) => isPlusExtraProvider(v.provider));
       setHasKiroGhcpVariants(hasIncompatible);
     } catch (err) {
       console.error('[Proxy] Failed to check variants:', err);
@@ -491,7 +496,13 @@ export default function ProxySection() {
                 <div className="flex items-center gap-3 mb-2">
                   <span className="font-medium">{t('settingsProxy.backendPlusApi')}</span>
                 </div>
-                <p className="text-xs text-muted-foreground">{t('settingsProxy.plusDesc')}</p>
+                <p className="text-xs text-muted-foreground">
+                  Optional track for extra providers. Still supported, but currently
+                  community-maintained instead of upstream-maintained.
+                </p>
+                <p className="mt-2 text-[11px] leading-relaxed text-muted-foreground">
+                  {plusProviderNames}
+                </p>
               </button>
 
               {/* Original Backend Card */}
@@ -510,15 +521,20 @@ export default function ProxySection() {
                     {t('settingsProxy.default')}
                   </span>
                 </div>
-                <p className="text-xs text-muted-foreground">{t('settingsProxy.originalDesc')}</p>
+                <p className="text-xs text-muted-foreground">
+                  Default, always-available backend for the core provider track.
+                </p>
+                <p className="mt-2 text-[11px] leading-relaxed text-muted-foreground">
+                  {coreProviderNames}
+                </p>
               </button>
             </div>
             {backend === 'plus' && (
               <Alert className="py-2 border-amber-200 bg-amber-50 dark:border-amber-900/50 dark:bg-amber-900/20 [&>svg]:top-2.5">
                 <AlertTriangle className="h-4 w-4 text-amber-600" />
                 <AlertDescription className="text-amber-700 dark:text-amber-400">
-                  CLIProxyAPIPlus upstream is currently unavailable. Local CLIProxy will use the
-                  original backend until issue #1062 is resolved.
+                  The Plus provider track is not deprecated, but local CLIProxy still falls back to
+                  the original backend while the maintained fork path is being brought back.
                 </AlertDescription>
               </Alert>
             )}
@@ -526,7 +542,10 @@ export default function ProxySection() {
             {backend === 'original' && hasKiroGhcpVariants && (
               <Alert variant="destructive" className="py-2">
                 <AlertTriangle className="h-4 w-4" />
-                <AlertDescription>{t('settingsProxy.variantsIncompatible')}</AlertDescription>
+                <AlertDescription>
+                  Existing plus-extra variants ({plusProviderNames}) will not run on the original
+                  backend. Keep them visible for reference, but switch to Plus before using them.
+                </AlertDescription>
               </Alert>
             )}
           </div>
diff --git a/ui/tests/unit/components/cliproxy/provider-editor/provider-info-tab.test.tsx b/ui/tests/unit/components/cliproxy/provider-editor/provider-info-tab.test.tsx
index 9d71278d..0606a688 100644
--- a/ui/tests/unit/components/cliproxy/provider-editor/provider-info-tab.test.tsx
+++ b/ui/tests/unit/components/cliproxy/provider-editor/provider-info-tab.test.tsx
@@ -51,4 +51,28 @@ describe('ProviderInfoTab', () => {
     expect(screen.queryByText('Change model')).not.toBeInTheDocument();
     expect(screen.getByText('ccs custom-provider --auth --add')).toBeInTheDocument();
   });
+
+  it('shows the plus-extra track note for community-maintained providers', () => {
+    render(
+      <ProviderInfoTab
+        provider="cursor"
+        displayName="Cursor"
+        defaultTarget="claude"
+        authStatus={{
+          ...authenticatedStatus,
+          provider: 'cursor',
+          displayName: 'Cursor',
+        }}
+        supportsModelConfig
+      />
+    );
+
+    expect(screen.getByText('Track')).toBeInTheDocument();
+    expect(screen.getByText('Plus extras / community-maintained')).toBeInTheDocument();
+    expect(
+      screen.getByText(
+        /Requires the optional Plus backend while that track remains community-maintained\./
+      )
+    ).toBeInTheDocument();
+  });
 });
diff --git a/ui/tests/unit/pages/cliproxy-page.test.tsx b/ui/tests/unit/pages/cliproxy-page.test.tsx
index bd651bfb..92b57035 100644
--- a/ui/tests/unit/pages/cliproxy-page.test.tsx
+++ b/ui/tests/unit/pages/cliproxy-page.test.tsx
@@ -2,6 +2,23 @@ import { beforeEach, describe, expect, it, vi } from 'vitest';
 import { render, screen, userEvent } from '@tests/setup/test-utils';
 
 const hookState = vi.hoisted(() => ({
+  authData: {
+    authStatus: [
+      {
+        provider: 'gemini',
+        displayName: 'Gemini',
+        authenticated: true,
+        accounts: [{ id: 'acct-1', provider: 'gemini' }],
+      },
+      {
+        provider: 'ghcp',
+        displayName: 'GitHub Copilot (OAuth)',
+        authenticated: false,
+        accounts: [],
+      },
+    ],
+    source: 'local' as const,
+  },
   catalogData: undefined as
     | {
         catalogs: Record<
@@ -23,17 +40,7 @@ vi.mock('@/hooks/use-cliproxy', () => ({
     isFetching: false,
   }),
   useCliproxyAuth: () => ({
-    data: {
-      authStatus: [
-        {
-          provider: 'gemini',
-          displayName: 'Gemini',
-          authenticated: true,
-          accounts: [{ id: 'acct-1', provider: 'gemini' }],
-        },
-      ],
-      source: 'local',
-    },
+    data: hookState.authData,
     isLoading: false,
   }),
   useCliproxyCatalog: () => ({
@@ -85,9 +92,39 @@ import { CliproxyPage } from '@/pages/cliproxy';
 
 describe('CliproxyPage add-account catalog gating', () => {
   beforeEach(() => {
+    hookState.authData = {
+      authStatus: [
+        {
+          provider: 'gemini',
+          displayName: 'Gemini',
+          authenticated: true,
+          accounts: [{ id: 'acct-1', provider: 'gemini' }],
+        },
+        {
+          provider: 'ghcp',
+          displayName: 'GitHub Copilot (OAuth)',
+          authenticated: false,
+          accounts: [],
+        },
+      ],
+      source: 'local',
+    };
     hookState.catalogData = undefined;
   });
 
+  it('separates core providers from plus extras in the sidebar', () => {
+    render(<CliproxyPage />);
+
+    expect(screen.getByText('Core / original backend')).toBeInTheDocument();
+    expect(screen.getByText('Plus extras / community-maintained')).toBeInTheDocument();
+    expect(screen.getByText('Default, always-available provider track')).toBeInTheDocument();
+    expect(
+      screen.getByText('Still supported, but separated from the default backend for now')
+    ).toBeInTheDocument();
+    expect(screen.getByText('Gemini')).toBeInTheDocument();
+    expect(screen.getByText('GitHub Copilot (OAuth)')).toBeInTheDocument();
+  });
+
   it('does not pass a static fallback catalog before the catalog query resolves', async () => {
     render(<CliproxyPage />);
 
diff --git a/ui/tests/unit/ui/lib/provider-config.test.ts b/ui/tests/unit/ui/lib/provider-config.test.ts
index b33f24b1..89905299 100644
--- a/ui/tests/unit/ui/lib/provider-config.test.ts
+++ b/ui/tests/unit/ui/lib/provider-config.test.ts
@@ -1,14 +1,20 @@
 import { describe, expect, it } from 'vitest';
 
 import {
+  CLIPROXY_PROVIDER_SECTIONS,
+  CORE_CLIPROXY_PROVIDERS,
   formatRequestedUpstreamModelRules,
   getProviderDescription,
   getProviderDisplayName,
   getProviderFallbackVisual,
   getProviderLogoAsset,
+  getProviderSection,
   getRequestedUpstreamModelRuleErrors,
   getRequestedModelId,
+  groupProvidersBySection,
+  isPlusExtraProvider,
   parseRequestedUpstreamModelRules,
+  PLUS_EXTRA_CLIPROXY_PROVIDERS,
   PROVIDER_COLORS,
 } from '@/lib/provider-config';
 
@@ -49,6 +55,40 @@ describe('provider model mapping helpers', () => {
 });
 
 describe('provider presentation metadata', () => {
+  it('splits providers into core and plus-extra sections', () => {
+    expect(CLIPROXY_PROVIDER_SECTIONS.map((section) => section.id)).toEqual(['core', 'plus-extra']);
+    expect(CORE_CLIPROXY_PROVIDERS).toContain('gemini');
+    expect(CORE_CLIPROXY_PROVIDERS).toContain('kimi');
+    expect(PLUS_EXTRA_CLIPROXY_PROVIDERS).toEqual([
+      'kiro',
+      'ghcp',
+      'cursor',
+      'gitlab',
+      'codebuddy',
+      'kilo',
+    ]);
+    expect(getProviderSection('gitlab')?.id).toBe('plus-extra');
+    expect(getProviderSection('gemini')?.id).toBe('core');
+    expect(isPlusExtraProvider('cursor')).toBe(true);
+    expect(isPlusExtraProvider('gemini')).toBe(false);
+  });
+
+  it('groups provider-backed data by shared section metadata', () => {
+    const grouped = groupProvidersBySection(
+      [
+        { provider: 'cursor', value: 'plus' },
+        { provider: 'gemini', value: 'core' },
+      ],
+      (entry) => entry.provider
+    );
+
+    expect(grouped).toHaveLength(2);
+    expect(grouped[0]?.id).toBe('core');
+    expect(grouped[0]?.items.map((entry) => entry.provider)).toEqual(['gemini']);
+    expect(grouped[1]?.id).toBe('plus-extra');
+    expect(grouped[1]?.items.map((entry) => entry.provider)).toEqual(['cursor']);
+  });
+
   it.each([
     ['cursor', 'Cursor', 'Cursor browser-authenticated provider', '/assets/sidebar/cursor.svg'],
     ['gitlab', 'GitLab Duo', 'GitLab Duo with OAuth or PAT auth', '/assets/providers/gitlab.svg'],