feat ui设计稿bug修复

src/components/index.ts

@@ -1,6 +1,7 @@
 export { default as AppHeader } from './AppHeader.vue'
 export { default as AppFooter } from './AppFooter.vue'
 export { default as AppButton } from './AppButton.vue'
+export { default as PageHead } from './PageHead.vue'
 export { default as CaseCard } from './CaseCard.vue'
 export { default as FilterPanel } from './FilterPanel.vue'
 export type { FilterChip } from './FilterPanel.vue'