feat: clarify account history sync route (#1187)

* feat: clarify account history sync route

* fix: clarify shared context command examples

* fix: report missing bare profile settings

ui/tests/unit/components/account/account-route-guide-card.test.tsx

@@ -0,0 +1,53 @@
+import { describe, expect, it } from 'vitest';
+import i18n from '@/lib/i18n';
+import { AccountRouteGuideCard } from '@/components/account/account-route-guide-card';
+import { render, screen } from '@tests/setup/test-utils';
+
+describe('AccountRouteGuideCard', () => {
+  it('explains explicit two-account usage while tokens stay isolated', async () => {
+    await i18n.changeLanguage('en');
+
+    render(
+      <AccountRouteGuideCard
+        totalAccounts={2}
+        isolatedCount={2}
+        sharedPeerGroups={[]}
+        deeperReadyGroups={[]}
+      />
+    );
+
+    expect(screen.getByText('Recommended two-account route')).toBeInTheDocument();
+    expect(screen.getByText('isolated ready')).toBeInTheDocument();
+    expect(screen.getByText('Tokens stay separate')).toBeInTheDocument();
+    expect(screen.getByText('Settings follow root')).toBeInTheDocument();
+    expect(screen.getByText('ccs auth create work')).toBeInTheDocument();
+    expect(screen.getByText('ccs auth create personal')).toBeInTheDocument();
+    expect(screen.getByText('ccs work')).toBeInTheDocument();
+    expect(screen.getByText('ccs personal')).toBeInTheDocument();
+  });
+
+  it('uses the active deeper-ready group in optional sync guidance', async () => {
+    await i18n.changeLanguage('en');
+
+    render(
+      <AccountRouteGuideCard
+        totalAccounts={2}
+        isolatedCount={0}
+        sharedPeerGroups={['sprint-a']}
+        deeperReadyGroups={['sprint-a']}
+      />
+    );
+
+    expect(screen.getByText('deeper sync ready')).toBeInTheDocument();
+    expect(
+      screen.getByText(
+        'ccs auth create work2 --share-context --context-group sprint-a --deeper-continuity'
+      )
+    ).toBeInTheDocument();
+    expect(
+      screen.getByText(
+        'Use the same group, such as "sprint-a", on both accounts when you want them to share local history.'
+      )
+    ).toBeInTheDocument();
+  });
+});