refactor: 死代码清理 + CDN SRI 加固 + 面包屑组件 + 代码规范文档

- 删除 7 个死模板文件 (products/services/quality/process/projects/customization/rfq)
- 删除 13 个旧图片素材 (jpg/png/webp)
- 新增 CDN SRI 完整性校验 (Bootstrap CSS/JS)
- 新增面包屑导航模板组件
- 新增代码清理方案与代码审查标准文档
- 更新 README.md

assets/js/theme.js

@@ -4,8 +4,6 @@
   document.documentElement.classList.remove('no-js');
   document.documentElement.classList.add('js');
 
-  var reducedMotion = window.matchMedia('(prefers-reduced-motion: reduce)').matches;
-
   function initStickyHeader() {
     var header = document.querySelector('#header');
     if (!header) return;
@@ -16,11 +14,6 @@
     window.addEventListener('scroll', updateHeader, { passive: true });
   }
 
-  function initAnimations() {
-    if (!window.AOS || typeof window.AOS.init !== 'function') return;
-    window.AOS.init({ duration: reducedMotion ? 0 : 700, once: true, disable: reducedMotion });
-  }
-
   function initVideoLightbox() {
     if (!$.fn || typeof $.fn.colorbox !== 'function') return;
     $('.youtube').colorbox({ iframe: true, innerWidth: 960, innerHeight: 585, maxWidth: '95%', maxHeight: '90%' });
@@ -39,7 +32,6 @@
 
   $(function () {
     initStickyHeader();
-    initAnimations();
     initVideoLightbox();
     initNavigation();
   });