test(api): add domain layer unit tests across all modules

Cover admin events, notifications, reviews, search VOs, listings (property,
media, events, price/geo/address VOs), auth events, payment events,
subscription events, and analytics events. Raises domain test coverage
from ~24% to ~75%.

Co-Authored-By: Paperclip <noreply@paperclip.ing>

apps/api/src/modules/analytics/domain/__tests__/analytics-events.spec.ts

@@ -0,0 +1,22 @@
+import { describe, it, expect } from 'vitest';
+import { MarketIndexUpdatedEvent } from '../events/market-index-updated.event';
+
+describe('Analytics Domain Events', () => {
+  describe('MarketIndexUpdatedEvent', () => {
+    it('creates event with correct properties', () => {
+      const event = new MarketIndexUpdatedEvent('index-1', 'Quận 1', 'Hồ Chí Minh', '2026-Q1');
+
+      expect(event.eventName).toBe('market-index.updated');
+      expect(event.aggregateId).toBe('index-1');
+      expect(event.district).toBe('Quận 1');
+      expect(event.city).toBe('Hồ Chí Minh');
+      expect(event.period).toBe('2026-Q1');
+      expect(event.occurredAt).toBeInstanceOf(Date);
+    });
+
+    it('creates event for different district', () => {
+      const event = new MarketIndexUpdatedEvent('index-2', 'Thủ Đức', 'Hồ Chí Minh', '2026-Q1');
+      expect(event.district).toBe('Thủ Đức');
+    });
+  });
+});