Add comprehensive tests for authentication, settings, and password reset pages

- Introduced smoke tests for Login, Register, Password Reset, Password Reset Confirm, and Settings pages.
- Enhanced test coverage for all dynamic imports using mocks and added Jest exclusions for non-testable Next.js files.
- Added component-specific test files for better structure and maintainability.
- Improved test isolation by mocking navigation, providers, and rendering contexts.

frontend/tests/app/(authenticated)/settings/page.test.tsx

@@ -0,0 +1,25 @@
+/**
+ * Tests for Settings Index Page
+ * Verifies redirect behavior
+ */
+
+import { redirect } from 'next/navigation';
+import SettingsPage from '@/app/(authenticated)/settings/page';
+
+// Mock Next.js navigation - redirect throws to interrupt execution
+jest.mock('next/navigation', () => ({
+  redirect: jest.fn(() => {
+    throw new Error('NEXT_REDIRECT');
+  }),
+}));
+
+describe('SettingsPage', () => {
+  beforeEach(() => {
+    jest.clearAllMocks();
+  });
+
+  it('redirects to /settings/profile', () => {
+    expect(() => SettingsPage()).toThrow('NEXT_REDIRECT');
+    expect(redirect).toHaveBeenCalledWith('/settings/profile');
+  });
+});

frontend/tests/app/(authenticated)/settings/password/page.test.tsx

@@ -0,0 +1,26 @@
+/**
+ * Tests for Password Settings Page
+ * Smoke tests for placeholder page
+ */
+
+import { render, screen } from '@testing-library/react';
+import PasswordSettingsPage from '@/app/(authenticated)/settings/password/page';
+
+describe('PasswordSettingsPage', () => {
+  it('renders without crashing', () => {
+    render(<PasswordSettingsPage />);
+    expect(screen.getByText('Password Settings')).toBeInTheDocument();
+  });
+
+  it('renders heading', () => {
+    render(<PasswordSettingsPage />);
+
+    expect(screen.getByRole('heading', { name: /password settings/i })).toBeInTheDocument();
+  });
+
+  it('shows placeholder text', () => {
+    render(<PasswordSettingsPage />);
+
+    expect(screen.getByText(/change your password/i)).toBeInTheDocument();
+  });
+});

frontend/tests/app/(authenticated)/settings/preferences/page.test.tsx

@@ -0,0 +1,26 @@
+/**
+ * Tests for Preferences Page
+ * Smoke tests for placeholder page
+ */
+
+import { render, screen } from '@testing-library/react';
+import PreferencesPage from '@/app/(authenticated)/settings/preferences/page';
+
+describe('PreferencesPage', () => {
+  it('renders without crashing', () => {
+    render(<PreferencesPage />);
+    expect(screen.getByText('Preferences')).toBeInTheDocument();
+  });
+
+  it('renders heading', () => {
+    render(<PreferencesPage />);
+
+    expect(screen.getByRole('heading', { name: /^preferences$/i })).toBeInTheDocument();
+  });
+
+  it('shows placeholder text', () => {
+    render(<PreferencesPage />);
+
+    expect(screen.getByText(/configure your preferences/i)).toBeInTheDocument();
+  });
+});

frontend/tests/app/(authenticated)/settings/profile/page.test.tsx

@@ -0,0 +1,26 @@
+/**
+ * Tests for Profile Settings Page
+ * Smoke tests for placeholder page
+ */
+
+import { render, screen } from '@testing-library/react';
+import ProfileSettingsPage from '@/app/(authenticated)/settings/profile/page';
+
+describe('ProfileSettingsPage', () => {
+  it('renders without crashing', () => {
+    render(<ProfileSettingsPage />);
+    expect(screen.getByText('Profile Settings')).toBeInTheDocument();
+  });
+
+  it('renders heading', () => {
+    render(<ProfileSettingsPage />);
+
+    expect(screen.getByRole('heading', { name: /profile settings/i })).toBeInTheDocument();
+  });
+
+  it('shows placeholder text', () => {
+    render(<ProfileSettingsPage />);
+
+    expect(screen.getByText(/manage your profile information/i)).toBeInTheDocument();
+  });
+});

frontend/tests/app/(authenticated)/settings/sessions/page.test.tsx

@@ -0,0 +1,26 @@
+/**
+ * Tests for Sessions Page
+ * Smoke tests for placeholder page
+ */
+
+import { render, screen } from '@testing-library/react';
+import SessionsPage from '@/app/(authenticated)/settings/sessions/page';
+
+describe('SessionsPage', () => {
+  it('renders without crashing', () => {
+    render(<SessionsPage />);
+    expect(screen.getByText('Active Sessions')).toBeInTheDocument();
+  });
+
+  it('renders heading', () => {
+    render(<SessionsPage />);
+
+    expect(screen.getByRole('heading', { name: /active sessions/i })).toBeInTheDocument();
+  });
+
+  it('shows placeholder text', () => {
+    render(<SessionsPage />);
+
+    expect(screen.getByText(/manage your active sessions/i)).toBeInTheDocument();
+  });
+});