feat(analytics): enhance Google Analytics with privacy compliance and comprehensive tracking

- Add automatic route change tracking for SPA navigation
- Implement Cookie consent banner for GDPR compliance
- Add performance tracking (LCP, FID, CLS Web Vitals)
- Add outbound link click tracking
- Integrate contact form submission tracking with conversion events
- Add CTA button click tracking in hero section
- Integrate error tracking in ErrorBoundary component
- Extend analytics utility library with 15+ tracking functions
- Configure IP anonymization and privacy settings
- Remove unused test files and deployment scripts
- Update case studies to include only specified cases
- Fix mobile navigation active state issues
- Fix lint errors in test files and components

BREAKING CHANGE: Google Analytics now requires user consent before tracking

src/components/sections/hero-section-atoms.tsx

@@ -8,6 +8,7 @@ import { MagneticButton, BlurReveal, CounterWithEffect } from '@/lib/animations'
 import { COMPANY_INFO, STATS } from '@/lib/constants';
 import { ArrowRight, Shield, Zap, Award } from 'lucide-react';
 import { useReducedMotion } from '@/hooks/use-reduced-motion';
+import { trackButtonClick, trackServiceInterest } from '@/lib/analytics';
 
 interface HeroContentProps {
   isVisible: boolean;
@@ -94,6 +95,16 @@ export function HeroDescription(_props: HeroContentProps) {
 export function HeroButtons({ isVisible }: HeroContentProps) {
   const shouldReduceMotion = useReducedMotion();
   
+  const handleConsultClick = () => {
+    trackButtonClick('consult_now', 'hero_section');
+    trackServiceInterest('consultation');
+  };
+
+  const handleLearnMoreClick = () => {
+    trackButtonClick('learn_more', 'hero_section');
+    scrollTo('about');
+  };
+  
   return (
     <motion.div
       initial={shouldReduceMotion ? {} : { opacity: 0, y: 20 }}
@@ -102,7 +113,7 @@ export function HeroButtons({ isVisible }: HeroContentProps) {
       className="flex flex-col sm:flex-row items-center justify-center gap-4 mb-8"
     >
       <MagneticButton strength={0.4}>
-        <StaticLink href="/contact">
+        <StaticLink href="/contact" onClick={handleConsultClick}>
           <SealButton size="lg" className="min-w-45">
             立即咨询
             <ArrowRight className="w-4 h-4 ml-2" />
@@ -113,7 +124,7 @@ export function HeroButtons({ isVisible }: HeroContentProps) {
         <RippleButton 
           size="lg"
           variant="outline"
-          onClick={() => scrollTo('about')}
+          onClick={handleLearnMoreClick}
           onKeyDown={(e) => handleKeyDown(e, 'about')}
           className="min-w-45"
         >