test(web): increase frontend test coverage to ~70% page coverage

- Fix vitest config to include [locale] directory tests (was excluded)
- Fix register.spec.tsx: use getByRole('heading') to avoid duplicate text match
- Fix search.spec.tsx: add QueryClientProvider wrapper and mock saved searches hook
- Add 12 new page test files covering dashboard, admin, public, and OAuth pages:
  - dashboard (main, profile, payments, subscription, KYC)
  - admin (dashboard, users)
  - public (landing, pricing)
  - analytics
  - OAuth callbacks (Google, Zalo)
- 29 test files, 174 tests, 16/23 pages covered (69.6%)

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

apps/web/app/[locale]/(dashboard)/analytics/__tests__/analytics.spec.tsx

@@ -0,0 +1,78 @@
+/* eslint-disable import-x/order */
+import { render, screen, waitFor } from '@testing-library/react';
+import { beforeEach, describe, expect, it, vi } from 'vitest';
+
+vi.mock('next/dynamic', () => ({
+  default: () => {
+    const Mock = () => <div data-testid="chart-placeholder">Chart</div>;
+    Mock.displayName = 'MockChart';
+    return Mock;
+  },
+}));
+
+const mockMarketReport = {
+  districts: [
+    { district: 'Quan 1', totalListings: 100, avgPriceM2: 120000000, medianPrice: '15000000000', daysOnMarket: 45, yoyChange: 5.2, inventoryLevel: 50 },
+  ],
+};
+
+const mockHeatmap = {
+  dataPoints: [
+    { district: 'Quan 1', avgPriceM2: 120000000, totalListings: 100, lat: 10.77, lng: 106.7 },
+  ],
+};
+
+const mockDistrictStats = {
+  districts: [
+    { district: 'Quan 1', propertyType: 'APARTMENT', medianPrice: '15000000000', avgPriceM2: 120000000, totalListings: 100, daysOnMarket: 45, yoyChange: 5.2 },
+  ],
+};
+
+const mockPriceTrend = {
+  trend: [
+    { period: '2025-Q4', avgPriceM2: 115000000, totalListings: 90 },
+    { period: '2026-Q1', avgPriceM2: 120000000, totalListings: 100 },
+  ],
+};
+
+vi.mock('@/lib/hooks/use-analytics', () => ({
+  useMarketReport: vi.fn(() => ({ data: mockMarketReport, isLoading: false, error: null })),
+  useHeatmap: vi.fn(() => ({ data: mockHeatmap, isLoading: false })),
+  useDistrictStats: vi.fn(() => ({ data: mockDistrictStats, isLoading: false })),
+  usePriceTrend: vi.fn(() => ({ data: mockPriceTrend, isLoading: false })),
+}));
+
+import AnalyticsPage from '../page';
+
+describe('AnalyticsPage', () => {
+  beforeEach(() => {
+    vi.clearAllMocks();
+  });
+
+  it('renders analytics page heading', () => {
+    render(<AnalyticsPage />);
+    expect(screen.getByText('Phân tích thị trường')).toBeInTheDocument();
+  });
+
+  it('renders summary cards', () => {
+    render(<AnalyticsPage />);
+    expect(screen.getByText('Tổng tin đăng')).toBeInTheDocument();
+    expect(screen.getByText('Giá TB/m²')).toBeInTheDocument();
+    expect(screen.getByText('Ngày trung bình để bán')).toBeInTheDocument();
+  });
+
+  it('renders city selection buttons', () => {
+    render(<AnalyticsPage />);
+    expect(screen.getByRole('button', { name: 'Ho Chi Minh' })).toBeInTheDocument();
+    expect(screen.getByRole('button', { name: 'Ha Noi' })).toBeInTheDocument();
+    expect(screen.getByRole('button', { name: 'Da Nang' })).toBeInTheDocument();
+  });
+
+  it('renders tab navigation', () => {
+    render(<AnalyticsPage />);
+    expect(screen.getByText('Tổng quan')).toBeInTheDocument();
+    expect(screen.getByText('Xu hướng giá')).toBeInTheDocument();
+    expect(screen.getByText('Chi tiết quận')).toBeInTheDocument();
+    expect(screen.getByText('Hiệu suất')).toBeInTheDocument();
+  });
+});