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/src/app/(auth)/login/page.tsx

@@ -4,6 +4,7 @@ import dynamic from 'next/dynamic';
 
 // Code-split LoginForm - heavy with react-hook-form + validation
 const LoginForm = dynamic(
+  /* istanbul ignore next - Next.js dynamic import, tested via component */
   () => import('@/components/auth/LoginForm').then((mod) => ({ default: mod.LoginForm })),
   {
     loading: () => (

frontend/src/app/(auth)/password-reset/confirm/PasswordResetConfirmContent.tsx

@@ -13,6 +13,7 @@ import Link from 'next/link';
 
 // Code-split PasswordResetConfirmForm (319 lines)
 const PasswordResetConfirmForm = dynamic(
+  /* istanbul ignore next - Next.js dynamic import, tested via component */
   () => import('@/components/auth/PasswordResetConfirmForm').then((mod) => ({ default: mod.PasswordResetConfirmForm })),
   {
     loading: () => (

frontend/src/app/(auth)/password-reset/page.tsx

@@ -9,6 +9,7 @@ import dynamic from 'next/dynamic';
 
 // Code-split PasswordResetRequestForm
 const PasswordResetRequestForm = dynamic(
+  /* istanbul ignore next - Next.js dynamic import, tested via component */
   () => import('@/components/auth/PasswordResetRequestForm').then((mod) => ({
     default: mod.PasswordResetRequestForm
   })),

frontend/src/app/(auth)/register/page.tsx

@@ -4,6 +4,7 @@ import dynamic from 'next/dynamic';
 
 // Code-split RegisterForm (313 lines)
 const RegisterForm = dynamic(
+  /* istanbul ignore next - Next.js dynamic import, tested via component */
   () => import('@/components/auth/RegisterForm').then((mod) => ({ default: mod.RegisterForm })),
   {
     loading: () => (

frontend/src/app/(authenticated)/settings/password/page.tsx

@@ -3,8 +3,10 @@
  * Change password functionality
  */
 
+/* istanbul ignore next - Next.js type import for metadata */
 import type { Metadata } from 'next';
 
+/* istanbul ignore next - Next.js metadata, not executable code */
 export const metadata: Metadata = {
   title: 'Password Settings',
 };

frontend/src/app/(authenticated)/settings/preferences/page.tsx

@@ -3,8 +3,10 @@
  * Theme, notifications, and other preferences
  */
 
-import type { Metadata } from 'next';
+/* istanbul ignore next - Next.js type import for metadata */
+import type { Metadata} from 'next';
 
+/* istanbul ignore next - Next.js metadata, not executable code */
 export const metadata: Metadata = {
   title: 'Preferences',
 };

frontend/src/app/(authenticated)/settings/profile/page.tsx

@@ -3,8 +3,10 @@
  * User profile management - edit name, email, phone, preferences
  */
 
+/* istanbul ignore next - Next.js type import for metadata */
 import type { Metadata } from 'next';
 
+/* istanbul ignore next - Next.js metadata, not executable code */
 export const metadata: Metadata = {
   title: 'Profile Settings',
 };

frontend/src/app/(authenticated)/settings/sessions/page.tsx

@@ -3,8 +3,10 @@
  * View and manage active sessions across devices
  */
 
+/* istanbul ignore next - Next.js type import for metadata */
 import type { Metadata } from 'next';
 
+/* istanbul ignore next - Next.js metadata, not executable code */
 export const metadata: Metadata = {
   title: 'Active Sessions',
 };

frontend/src/app/admin/page.tsx

@@ -4,8 +4,10 @@
  * Protected by AuthGuard in layout with requireAdmin=true
  */
 
+/* istanbul ignore next - Next.js type import for metadata */
 import type { Metadata } from 'next';
 
+/* istanbul ignore next - Next.js metadata, not executable code */
 export const metadata: Metadata = {
   title: 'Admin Dashboard',
 };

frontend/src/app/providers.tsx

@@ -7,6 +7,7 @@ import { AuthInitializer } from '@/components/auth';
 
 // Lazy load devtools - only in local development (not in Docker), never in production
 // Set NEXT_PUBLIC_ENABLE_DEVTOOLS=true in .env.local to enable
+/* istanbul ignore next - Dev-only devtools, not tested in production */
 const ReactQueryDevtools =
   process.env.NODE_ENV === 'development' &&
   process.env.NEXT_PUBLIC_ENABLE_DEVTOOLS === 'true'