修改页面，完成单页模式新增首页返回上一页按钮

public/css/public.css

@@ -198,6 +198,52 @@ img {
   white-space: nowrap;
 }
 
+.nav-user-entry {
+  min-width: 0;
+  display: inline-flex;
+  align-items: center;
+  gap: 8px;
+  font-weight: 700;
+}
+
+.nav-user-avatar {
+  width: 32px;
+  height: 32px;
+  position: relative;
+  flex: 0 0 auto;
+  display: inline-grid;
+  place-items: center;
+  overflow: hidden;
+  border: 1px solid rgba(255, 248, 230, .56);
+  border-radius: 50%;
+  color: var(--red-deep);
+  background: #fff4dc;
+  font-size: 13px;
+  font-weight: 900;
+}
+
+.nav-user-avatar img {
+  width: 100%;
+  height: 100%;
+  position: relative;
+  z-index: 1;
+  object-fit: cover;
+}
+
+.nav-user-avatar-fallback {
+  position: absolute;
+  inset: 0;
+  display: grid;
+  place-items: center;
+}
+
+.nav-user-name {
+  max-width: 96px;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+}
+
 .profile-current-genealogy {
   min-width: 0;
   max-width: 240px;