feat: Add images to About and Contact pages

- Add handshake image to About page Company Introduction section
- Add cars-export image as background in Contact page Business Partnership section

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

frontend/src/app/about/page.tsx

@@ -72,11 +72,24 @@ export default function AboutPage() {
 
       {/* Company Introduction */}
       <div className="container mx-auto px-4 py-16">
-        <div className="max-w-4xl mx-auto">
+        <div className="max-w-6xl mx-auto">
           <div className="bg-white rounded-lg shadow-md p-8 md:p-12">
-            <h2 className="text-2xl font-bold text-gray-800 mb-6">{t.companyIntro}</h2>
+            <div className="grid grid-cols-1 lg:grid-cols-2 gap-8 items-center">
+              {/* Image Section */}
+              <div className="relative h-64 lg:h-80 rounded-lg overflow-hidden shadow-lg">
+                <Image
+                  src="/images/handshake.png"
+                  alt="Global Partnership"
+                  fill
+                  className="object-cover"
+                  priority
+                />
+              </div>
 
-            <div className="prose max-w-none text-gray-600">
+              {/* Text Section */}
+              <div>
+                <h2 className="text-2xl font-bold text-gray-800 mb-6">{t.companyIntro}</h2>
+                <div className="prose max-w-none text-gray-600">
               {language === 'ko' ? (
                 <>
                   <p className="mb-4">
@@ -152,6 +165,8 @@ export default function AboutPage() {
                   </p>
                 </>
               )}
+                </div>
+              </div>
             </div>
           </div>
         </div>

frontend/src/app/contact/page.tsx

@@ -4,6 +4,7 @@ import { useState, useEffect } from 'react';
 import { useTranslation } from '@/lib/i18n';
 import { useAuthStore } from '@/lib/store';
 import { inquiryApi, Inquiry, InquiryWithMessages } from '@/lib/api';
+import Image from 'next/image';
 
 const CATEGORY_LABELS: Record<string, Record<string, string>> = {
   ko: {
@@ -554,8 +555,17 @@ export default function ContactPage() {
       )}
 
       {/* Business Partnership Section */}
-      <section className="bg-gradient-to-r from-primary-800 to-primary-900 py-16">
-        <div className="container mx-auto px-4">
+      <section className="bg-gradient-to-r from-primary-800 to-primary-900 py-16 relative overflow-hidden">
+        {/* Background Image */}
+        <div className="absolute inset-0 opacity-20">
+          <Image
+            src="/images/cars-export.png"
+            alt="Car Export Terminal"
+            fill
+            className="object-cover"
+          />
+        </div>
+        <div className="container mx-auto px-4 relative z-10">
           <div className="max-w-4xl mx-auto text-center">
             <div className="flex items-center justify-center gap-3 mb-4">
               <svg className="w-8 h-8 text-yellow-400" fill="currentColor" viewBox="0 0 24 24">