fix(cliproxy): keep provider sections consistent for variants

ui/tests/unit/components/cliproxy/provider-editor/provider-info-tab.test.tsx

@@ -75,4 +75,24 @@ describe('ProviderInfoTab', () => {
       )
     ).toBeInTheDocument();
   });
+
+  it('uses the base provider when rendering variant track metadata', () => {
+    render(
+      <ProviderInfoTab
+        provider="my-cursor"
+        baseProvider="cursor"
+        displayName="My Cursor Variant"
+        defaultTarget="claude"
+        authStatus={{
+          ...authenticatedStatus,
+          provider: 'cursor',
+          displayName: 'Cursor',
+        }}
+        supportsModelConfig
+      />
+    );
+
+    expect(screen.getByText('Track')).toBeInTheDocument();
+    expect(screen.getByText('Plus extras / community-maintained')).toBeInTheDocument();
+  });
 });

ui/tests/unit/ui/lib/provider-config.test.ts

@@ -16,6 +16,7 @@ import {
   parseRequestedUpstreamModelRules,
   PLUS_EXTRA_CLIPROXY_PROVIDERS,
   PROVIDER_COLORS,
+  variantUsesPlusExtraProvider,
 } from '@/lib/provider-config';
 
 describe('provider model mapping helpers', () => {
@@ -89,6 +90,27 @@ describe('provider presentation metadata', () => {
     expect(grouped[1]?.items.map((entry) => entry.provider)).toEqual(['cursor']);
   });
 
+  it('detects plus-extra providers inside composite variants', () => {
+    expect(
+      variantUsesPlusExtraProvider({
+        provider: 'gemini',
+        tiers: {
+          opus: { provider: 'gemini' },
+          sonnet: { provider: 'cursor' },
+        },
+      })
+    ).toBe(true);
+    expect(
+      variantUsesPlusExtraProvider({
+        provider: 'gemini',
+        tiers: {
+          opus: { provider: 'gemini' },
+          sonnet: { provider: 'kimi' },
+        },
+      })
+    ).toBe(false);
+  });
+
   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'],