WebcontextConfig 显式映射 /h5/** 静态资源路径

Spring Boot 默认的 welcome page 解析对子目录不可靠，
显式添加 /h5/** → classpath:/static/h5/ 映射确保 H5 页面可访问。

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

car-wash-admin/src/main/java/com/kym/admin/config/WebcontextConfig.java

@@ -14,6 +14,7 @@ public class WebcontextConfig implements WebMvcConfigurer {
     @Override
     public void addResourceHandlers(ResourceHandlerRegistry registry) {
         registry.addResourceHandler("/static/**").addResourceLocations("classpath:/static/");
+        registry.addResourceHandler("/h5/**").addResourceLocations("classpath:/static/h5/");
     }
 
 }