refactor(components): 重构多个组件并优化公共样式

重构了item-head、item-bottom、item-offer、item-summary和item-tenement组件，优化了props传递和数据处理逻辑
将公共头部和导航样式提取到public.css中，避免重复代码
修复了item-tenement组件中图片显示和数据处理的问题
更新了item-bottom组件的点赞和收藏逻辑，增加错误提示
优化了item-head组件的用户信息显示逻辑
调整了多个组件的样式细节，包括间距、图标大小等

js/section-index.js

@@ -3,7 +3,6 @@ import { itemForum } from "../component/item-forum/item-forum.js";
 
 const appSectionIndex = createApp({
     setup() {
-        let signInAlreadyState = ref(false);
         onMounted(() => {
             const params = getUrlParams();
             const id = params.section || "";
@@ -199,7 +198,7 @@ const appSectionIndex = createApp({
             updateUrlParams({ section: uniqid });
         };
 
-        return { changeSection, signInAlreadyState, sectionList, section, info, handpickList, tagsList, list, count };
+        return { changeSection, sectionList, section, info, handpickList, tagsList, list, count };
     },
 });
 appSectionIndex.component("item-forum", itemForum);