Add hybrid research copilot workspace

lib/server/task-notifications.test.ts

@@ -120,4 +120,35 @@ describe('task notification builder', () => {
     expect(notification.detailLine).toBe('Could not load the primary filing document.');
     expect(notification.actions.some((action) => action.id === 'open_filings')).toBe(true);
   });
+
+  it('adds research navigation for completed research brief jobs', () => {
+    const notification = buildTaskNotification(baseTask({
+      task_type: 'research_brief',
+      status: 'completed',
+      stage: 'completed',
+      stage_detail: 'Generated research brief artifact for NVDA.',
+      stage_context: {
+        subject: {
+          ticker: 'NVDA'
+        }
+      },
+      payload: {
+        ticker: 'NVDA',
+        query: 'Update the thesis'
+      },
+      result: {
+        ticker: 'NVDA',
+        artifactId: 12,
+        model: 'test-model'
+      },
+      finished_at: '2026-03-09T10:06:00.000Z'
+    }));
+
+    expect(notification.actions[0]).toMatchObject({
+      id: 'open_research',
+      href: '/research?ticker=NVDA',
+      primary: true
+    });
+    expect(notification.stats.some((stat) => stat.label === 'Artifact' && stat.value === '12')).toBe(true);
+  });
 });