feat: 优化会展策划网站UI和添加Duoduo Agent设计流程展示

主要更新:
- 统一所有页面导航栏样式为glass-morphism风格
- 添加Duoduo Agent智能设计系统完整可视化流程
- 展示从CAD到展位概念的5个设计阶段
- 优化页面交互效果和用户体验

详细修改:
- web_frontend/web_result/pages/: 统一6个页面导航栏样式
- operation.html: 新增Duoduo Agent设计流程展示模块
- 添加5张设计阶段图片展示 (CAD/概念/白模/渲染/最终方案)
- 增强视觉效果和动画交互

🤖 Generated with [Claude Code](https://claude.ai/code)

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

web_frontend/exhibition-demo/node_modules/.package-lock.json

@@ -2121,6 +2121,21 @@
       "dev": true,
       "license": "ISC"
     },
+    "node_modules/fsevents": {
+      "version": "2.3.3",
+      "resolved": "https://registry.npmmirror.com/fsevents/-/fsevents-2.3.3.tgz",
+      "integrity": "sha512-5xoDfX+fL7faATnagmWPpbFtwh/R77WmMMqqHGS65C3vvB0YHrgF+B1YmZ3441tMj5n63k0212XNoJwzlhffQw==",
+      "dev": true,
+      "hasInstallScript": true,
+      "license": "MIT",
+      "optional": true,
+      "os": [
+        "darwin"
+      ],
+      "engines": {
+        "node": "^8.16.0 || ^10.6.0 || >=11.0.0"
+      }
+    },
     "node_modules/function-bind": {
       "version": "1.1.2",
       "resolved": "https://registry.npmmirror.com/function-bind/-/function-bind-1.1.2.tgz",