fix(pwa): 修复部署切换后的懒加载失败 - #44
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背景
新版本部署后，旧标签页仍可能请求上一版的懒加载资源。原来的 SPA 回退会把缺失的
/assets/*请求改写为index.html，浏览器和 Service Worker 因而可能收到并缓存200 text/html，最终在切换页面时表现为路由加载失败。长时间打开的页面也没有主动触发 Service Worker 更新检查。改动
CacheFirst，并按状态码和 Content-Type 校验缓存写入。vite:preloadError，显示“当前版本已失效”提示，由用户确认后更新或刷新。验证
vp run readyvite:preloadError后显示版本失效提示，“稍后”和“立即更新”行为正常。/assets/*.js返回 404 且不是 HTML。额外说明
根目录
README.md的表格变化只是vp check --fix对主分支近期内容的格式化，没有修改文意。