feat(dashboard): close legacy parity gaps

tests/dashboard/performance-operations.test.tsx

@@ -7,7 +7,7 @@ import userEvent from '@testing-library/user-event';
 import { HttpResponse, http } from 'msw';
 import { setupServer } from 'msw/node';
 import type { PropsWithChildren, ReactElement } from 'react';
-import { afterAll, afterEach, beforeAll, describe, expect, it } from 'vitest';
+import { afterAll, afterEach, beforeAll, describe, expect, it, vi } from 'vitest';
 import { OperationsPage } from '../../apps/dashboard/src/features/operations/operations-page.js';
 import { PerformancePage } from '../../apps/dashboard/src/features/performance/performance-page.js';
 
@@ -139,5 +139,35 @@ describe('OperationsPage', () => {
     expect(consoleRegion).toHaveTextContent('No logs match the current filters.');
     expect(within(consoleRegion).getByRole('button', { name: 'Pause console' })).toHaveAttribute('aria-pressed', 'false');
     expect(within(consoleRegion).getByLabelText('Auto-scroll')).toBeChecked();
+    await user.clear(within(consoleRegion).getByLabelText('Search logs'));
+    await user.click(within(consoleRegion).getByRole('button', { name: 'Clear local console' }));
+    expect(consoleRegion).toHaveTextContent('Server logs were not deleted');
+  });
+
+  it('starts delta sync directly and confirms expensive chat cache operations', async () => {
+    let deltaCalls = 0;
+    let fullCalls = 0;
+    server.use(
+      http.get('/api/activity', () => HttpResponse.json([])),
+      http.get('/api/logs', () => HttpResponse.json([])),
+      http.get('/api/chats/sync', () => HttpResponse.json({ syncing: false, syncingKind: null, lastFullSyncAt: null, lastDeltaSyncAt: null, hasEverFullSynced: false, cachedChats: 2, progress: null })),
+      http.post('/api/chats/sync/delta', () => { deltaCalls += 1; return HttpResponse.json({ success: true, kind: 'delta' }); }),
+      http.post('/api/chats/sync/full', () => { fullCalls += 1; return HttpResponse.json({ success: true, kind: 'full' }); }),
+      http.post('/api/chats/fetch-all', () => HttpResponse.json({ success: true, count: 7 })),
+    );
+    const confirmSpy = vi.spyOn(globalThis, 'confirm').mockReturnValue(false);
+    const user = userEvent.setup();
+    renderPage(<OperationsPage realtimeEnabled={false} />);
+    await user.click(await screen.findByRole('button', { name: 'Sync latest chats' }));
+    expect(await screen.findByText(/Delta sync started/)).toBeInTheDocument();
+    expect(deltaCalls).toBe(1);
+    await user.click(screen.getByRole('button', { name: 'Full cache sync' }));
+    expect(fullCalls).toBe(0);
+    confirmSpy.mockReturnValue(true);
+    await user.click(screen.getByRole('button', { name: 'Full cache sync' }));
+    expect(await screen.findByText(/Full sync started/)).toBeInTheDocument();
+    expect(fullCalls).toBe(1);
+    await user.click(screen.getByRole('button', { name: 'Fetch all chats' }));
+    expect(await screen.findByText('Fetched 7 chats.')).toBeInTheDocument();
   });
 });