feat(header): 新增头部组件功能与样式优化

- 添加默认头像图片资源
- 扩展监听文件同步配置
- 重构头像展示样式，增加背景和尺寸控制
- 完善签到功能逻辑和样式交互
- 新增头部组件HTML模板和JS实现
- 调整搜索框和历史记录显示逻辑
- 优化页面布局和响应式设计

css/public.css

@@ -1571,8 +1571,6 @@ body {
   text-decoration: underline;
 }
 .head-top {
-  margin-top: 20px;
-  margin-bottom: 30px;
   position: relative;
   z-index: 4;
 }
@@ -1627,6 +1625,7 @@ body {
   cursor: pointer;
 }
 .head-top .input-box .search-box-history {
+  display: none;
   width: 460px;
   /* height: 267px; */
   background-color: #ffffff;
@@ -1657,22 +1656,43 @@ body {
   height: 40px;
   border-radius: 83px;
   cursor: pointer;
+  display: none;
+}
+.head-top .sign-in .sign-in-already-box {
+  display: none;
 }
 .head-top .sign-in.sign-in-already {
   background-color: #ffffff;
   font-size: 14px;
   color: #333;
 }
+.head-top .sign-in.sign-in-already .sign-in-already-box {
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  width: 192px;
+  height: 40px;
+}
 .head-top .sign-in.sign-in-already .sign-icon {
   width: 20px;
   height: 20px;
   margin-right: 10px;
 }
+.head-top .sign-in.sign-in-already .sign-in-no-box {
+  display: none;
+}
 .head-top .sign-in.sign-in-no {
   position: relative;
   z-index: 1;
   padding-right: 8px;
 }
+.head-top .sign-in.sign-in-no .sign-in-no-box {
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  width: 192px;
+  height: 40px;
+}
 .head-top .sign-in.sign-in-no .sign-in-bj {
   position: absolute;
   top: 0;
@@ -1741,6 +1761,9 @@ body {
   top: 25px;
   left: 136px;
 }
+.head-top .post-list {
+  display: none;
+}
 .head-top .post-list .post-item {
   width: 84px;
   height: 34px;