fix: special标签简化+未上传时显示(无)替代(选填)

platform/client/src/components/AssetUploader.tsx

@@ -225,7 +225,7 @@ export default function AssetUploader({ creativeId, assets, assetDefs, onUpdated
               )}
               <span className={styles.fileName}>{def.file}</span>
               <span className={styles.fileLabel}>
-                {def.label} {!isRequired && "(选填)"}
+                {def.label} {!isRequired && !asset ? "(无)" : !isRequired ? "(选填)" : ""}
               </span>
               {asset && (
                 <span className={styles.fileSize}>

templates/coloring/manifest.json

@@ -11,7 +11,7 @@
       { "key": "map",     "file": "map.png",     "label": "映射图",       "accept": ".png" }
     ],
     "optional": [
-      { "key": "special", "file": "special.jpeg", "label": "着色参考图（推荐，无则自动生成）", "accept": ".jpeg,.jpg,.png" },
+      { "key": "special", "file": "special.jpeg", "label": "着色参考图", "accept": ".jpeg,.jpg,.png" },
       { "key": "logo", "file": "logo.png", "label": "Logo 图标（默认模板自带）", "accept": ".png" },
       { "key": "logoTxt", "file": "logo-txt.png", "label": "Logo 文字图（默认模板自带）", "accept": ".png" },
       { "key": "slogon", "file": "slogon.png", "label": "Slogon 宣传语图（默认模板自带）", "accept": ".png" },