完善画布任务与标准绿幕抠除链路

统一编辑器标准绿幕提示词和本地绿幕透明化后处理

生成标准绿幕资产前保存源图到 OSS 并下沉字节级抠绿到 platform-image

将手动去背景接入外部生成队列与画布任务侧栏

修复任务侧栏分页、滚动、计时、焦点与完成信息展示

补充右键菜单关闭和素材复制下载交互

同步编辑器相关文档和项目记忆

src/index.css

@@ -6371,8 +6371,8 @@ html[data-mobile-keyboard-open='true'] .platform-mobile-bottom-dock {
 
 .image-canvas-editor__task-sidebar-item {
   display: grid;
-  grid-template-columns: auto minmax(0, 1fr) auto;
-  align-items: center;
+  grid-template-columns: auto minmax(0, 1fr);
+  align-items: start;
   gap: 0.55rem;
   width: 100%;
   border: 0;
@@ -6438,7 +6438,15 @@ html[data-mobile-keyboard-open='true'] .platform-mobile-bottom-dock {
 .image-canvas-editor__task-sidebar-item-main {
   display: grid;
   min-width: 0;
-  gap: 0.12rem;
+  gap: 0.16rem;
+}
+
+.image-canvas-editor__task-sidebar-item-title-row {
+  display: grid;
+  grid-template-columns: minmax(0, 1fr) auto;
+  min-width: 0;
+  align-items: center;
+  gap: 0.45rem;
 }
 
 .image-canvas-editor__task-sidebar-item-title {
@@ -6459,10 +6467,29 @@ html[data-mobile-keyboard-open='true'] .platform-mobile-bottom-dock {
   white-space: nowrap;
 }
 
+.image-canvas-editor__task-sidebar-item-progress {
+  overflow: hidden;
+  color: #334155;
+  font-size: 0.68rem;
+  font-weight: 750;
+  line-height: 1.3;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+}
+
+.image-canvas-editor__task-sidebar-item-time {
+  color: #64748b;
+  font-size: 0.68rem;
+  font-weight: 750;
+  line-height: 1.25;
+  white-space: nowrap;
+}
+
 .image-canvas-editor__task-sidebar-item-status {
   color: #64748b;
   font-size: 0.68rem;
   font-weight: 800;
+  white-space: nowrap;
 }
 
 .image-canvas-editor__panel-dock {