auto-claude: subtask-7-1 - Create functionality tests for navigation, forms, and language switching

- Add comprehensive E2E functionality tests (33 tests):
  - Navigation: page loading, desktop/mobile nav links, active states
  - Contact Form: validation, submission, error handling
  - Language Switching: locale changes, URL preservation, dropdown behavior
  - Cross-functional: combined navigation and language flows
  - Accessibility: ARIA attributes for nav, menu, form labels

- Fix Next.js 15 ssr:false in server component issue:
  - Create ChatbotLoader client wrapper for dynamic import
  - Update layout.tsx to use ChatbotLoader instead of direct dynamic import

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

src/components/chat/ChatbotLoader.tsx

@@ -0,0 +1,17 @@
+'use client';
+
+import dynamic from 'next/dynamic';
+
+/**
+ * Client-side wrapper for the Chatbot component.
+ * Uses dynamic import with ssr: false to prevent hydration issues
+ * with browser-only APIs like localStorage.
+ */
+const Chatbot = dynamic(
+  () => import('./Chatbot').then((mod) => mod.Chatbot),
+  { ssr: false }
+);
+
+export function ChatbotLoader() {
+  return <Chatbot />;
+}