fix: 统一图库滚动区域并吸顶镜头筛选栏

src/admin.css

@@ -455,8 +455,19 @@ body {
 .production-pipeline-card > .confirm-action {
     margin-block: 16px 4px;
 }
+.gallery-workspace-page .workspace-scroll-content {
+    padding-top: 8px;
+}
+/* 图库只使用正文纵向滚动；筛选栏在同一滚动上下文吸顶，不再被头部高度限制。 */
 .gallery-workspace-page .form-image-filter-region {
-    margin-block: 10px 0;
+    position: sticky;
+    top: 0;
+    z-index: 10;
+    background: var(--app-subtle);
+    margin-block: 10px 12px;
+}
+.gallery-workspace-page .workspace-scroll > .n-scrollbar-container {
+    overflow-anchor: none;
 }
 .workspace-heading h2 {
     font-size: 16px;
@@ -1501,6 +1512,24 @@ body {
     padding: 14px 16px;
     background: var(--app-subtle);
     margin-bottom: 12px;
+    min-width: 0;
+}
+/* 关联素材始终单行横向浏览，数量和长名称不会撑高定位区或压缩图片区域。 */
+.asset-impact-links-scroll.n-scrollbar {
+    height: auto;
+    min-width: 0;
+    max-width: 100%;
+}
+.asset-impact-links {
+    display: flex;
+    align-items: center;
+    gap: 12px;
+    width: max-content;
+    white-space: nowrap;
+    padding-bottom: 8px;
+}
+.asset-impact-links > * {
+    flex-shrink: 0;
 }
 .asset-impact-select {
     min-width: 0;