feat: add agent API and operational analytics

tests/dashboard/performance-operations.test.tsx

@@ -68,11 +68,26 @@ describe('PerformancePage', () => {
           },
         ]),
       ),
+      http.get('/api/analytics/funnel', () => HttpResponse.json({
+        responseWindowHours: 48,
+        processed: 100,
+        sent: 40,
+        pending: 5,
+        mature: 35,
+        responded: 12,
+        engaged: 4,
+        declined: 2,
+        boundary: 1,
+        upsell: 3,
+        images: 2,
+      })),
     );
 
     renderPage(<PerformancePage />);
 
     expect(await screen.findByRole('heading', { name: 'Performance' })).toBeInTheDocument();
+    expect(screen.getByRole('heading', { name: 'Outcome funnel' })).toBeInTheDocument();
+    expect(screen.getByText('5 awaiting maturity')).toBeInTheDocument();
     const subredditTable = screen.getByRole('table', { name: 'Subreddit performance' });
     expect(within(subredditTable).getByText('n = 40')).toBeInTheDocument();
     expect(within(subredditTable).getByText('n = 3')).toBeInTheDocument();