feat(editor): 添加预加载动画和编辑器功能优化

- 新增预加载动画组件及样式
- 优化编辑器图片和视频上传处理逻辑
- 修复编辑器内容转换和格式处理问题
- 添加上传进度显示功能
- 改进编辑器工具栏图标和布局

css/edit.less

@@ -10,6 +10,7 @@
         height: 60px;
         background: linear-gradient(180deg, rgba(255, 255, 255, 1) -41%, rgba(238, 248, 249, 1) 96%);
         margin-bottom: 20px;
+        position: relative;
 
         .edit-head-container {
             width: 1200px;
@@ -48,6 +49,16 @@
                 border-radius: 50%;
             }
         }
+
+        .progress-box {
+            position: absolute;
+            bottom: -5px;
+            left: 0;
+            height: 5px;
+            width: 2px;
+            background: linear-gradient(315deg, rgb(103, 114, 255) 0px, rgb(0, 249, 229) 100%) center center / 104% 104% rgb(74, 84, 255);
+            border-radius: 0 5px 5px 0;
+        }
     }
 
     .edit-container {
@@ -152,6 +163,11 @@
                         &.active {
                             background-color: rgba(246, 246, 189, 1);
                         }
+
+                        &.disabled {
+                            color: #999;
+                            cursor: not-allowed;
+                        }
                     }
 
                     .file {
@@ -327,22 +343,22 @@
                 font-size: 18px;
                 line-height: 26px;
                 color: #333333;
+                h1,
+                h1 span {
+                    font-family: "PingFangSC-Semibold", "PingFang SC Semibold", "PingFang SC", sans-serif !important;
+                    font-weight: 650 !important;
+                    color: #000000;
+                    font-size: 18px !important;
+                    line-height: 30px;
+                }
 
-                a {
+                a,
+                a span {
                     font-family: "PingFangSC-Regular", "PingFang SC", sans-serif;
                     text-decoration: underline;
                     color: #04b0d5;
                 }
 
-                h1,
-                h1 span {
-                    font-family: "PingFangSC-Semibold", "PingFang SC Semibold", "PingFang SC", sans-serif;
-                    font-weight: 650;
-                    color: #000000;
-                    font-size: 18px;
-                    line-height: 30px;
-                }
-
                 video {
                     max-width: 100%;
                 }