feat(events): support date range filtering

src/tbank/upcoming-events.controller.spec.ts

@@ -8,7 +8,13 @@ describe('UpcomingEventsController', () => {
   it('passes the authenticated user and account to the service', async () => {
     const events = { get: jest.fn() };
     const controller = new UpcomingEventsController(events as never);
-    await controller.get({ user: { sub: 'user' } } as never, 'account');
-    expect(events.get).toHaveBeenCalledWith('user', 'account');
+    await controller.get({ user: { sub: 'user' } } as never, 'account', {
+      from: '2026-09-01',
+      to: '2026-09-30',
+    });
+    expect(events.get).toHaveBeenCalledWith('user', 'account', {
+      from: '2026-09-01',
+      to: '2026-09-30',
+    });
   });
 });