完善样片管理列表、详情与上传页 UI 交互。

对齐 Android 样片模块布局与加载状态，补充共享 UI 组件与图片资源，并增强列表解析容错与单元测试覆盖。

Co-authored-by: Cursor <cursoragent@cursor.com>

suixinkan/UI/MaterialManagement/MaterialListViewController.swift

@@ -564,7 +564,7 @@ private final class MaterialListCell: UITableViewCell {
             make.leading.greaterThanOrEqualTo(statusBadge.snp.trailing).offset(8)
         }
         statsStack.snp.makeConstraints { make in
-            make.top.equalTo(statusBadge.snp.bottom).offset(8)
+            make.top.equalTo(statusBadge.snp.bottom).offset(12)
             make.leading.equalToSuperview()
             make.trailing.lessThanOrEqualToSuperview()
             make.bottom.equalToSuperview()