Show per-account delivery status

tests/dashboard/performance-operations.test.tsx

@@ -132,7 +132,12 @@ describe('OperationsPage', () => {
         expect(new URL(request.url).searchParams.get('limit')).toBe('200');
         return HttpResponse.json([
           { timestamp: Date.parse('2026-08-08T12:00:01Z'), level: 'info', message: 'Sync complete' },
-          { timestamp: Date.parse('2026-08-08T12:00:02Z'), level: 'error', message: 'Matrix request failed' },
+          {
+            timestamp: Date.parse('2026-08-08T12:00:02Z'),
+            level: 'error',
+            message: 'Matrix request failed: M_LIMIT_EXCEEDED',
+            data: { accountId: '@t2_owner:reddit.com', redditUsername: 'operator' },
+          },
         ]);
       }),
       http.get('/api/chats/sync', () =>
@@ -171,10 +176,14 @@ describe('OperationsPage', () => {
 
     const consoleRegion = screen.getByRole('region', { name: 'Live console' });
     expect(consoleRegion).toHaveTextContent('Sync complete');
-    expect(consoleRegion).toHaveTextContent('Matrix request failed');
+    expect(consoleRegion).toHaveTextContent('Matrix request failed: M_LIMIT_EXCEEDED');
+    expect(within(consoleRegion).getByRole('link', { name: 'u/operator' })).toHaveAttribute(
+      'href',
+      'https://www.reddit.com/u/operator',
+    );
     await user.selectOptions(within(consoleRegion).getByLabelText('Log level'), 'error');
     expect(consoleRegion).not.toHaveTextContent('Sync complete');
-    expect(consoleRegion).toHaveTextContent('Matrix request failed');
+    expect(consoleRegion).toHaveTextContent('Matrix request failed: M_LIMIT_EXCEEDED');
     await user.type(within(consoleRegion).getByLabelText('Search logs'), 'no match');
     expect(consoleRegion).toHaveTextContent('No logs match the current filters.');
     expect(within(consoleRegion).getByRole('button', { name: 'Pause console' })).toHaveAttribute('aria-pressed', 'false');