feat(short-drama-agent-front): 调整工作台布局与图库瀑布流

src/components/ui/WorkspaceTools.vue

@@ -44,7 +44,6 @@ const open = defineModel<boolean>('open', { default: false })
                     ></NButton></div
             ></template>
             <slot />
-            <template #footer><span class="text-xs text-muted">关闭面板不会取消已提交的后台任务。</span></template>
         </NDrawerContent>
     </NDrawer>
 </template>
@@ -52,8 +51,7 @@ const open = defineModel<boolean>('open', { default: false })
 <style>
 /* 本组件专属布局与 Naive 内部结构覆盖。 */
 @reference "../../styles/styles.css";
-.workspace-tools-drawer .n-drawer-header,
-.workspace-tools-drawer .n-drawer-footer {
+.workspace-tools-drawer .n-drawer-header {
     @apply bg-(--app-subtle) p-4;
 }
 .workspace-tools-drawer .n-drawer-body {
@@ -62,7 +60,6 @@ const open = defineModel<boolean>('open', { default: false })
 .workspace-tools-drawer {
     --n-header-padding: 16px;
     --n-body-padding: 16px;
-    --n-footer-padding: 16px;
     @apply max-w-full;
 }
 .workspace-tools-heading {