feat: 功能优化

frontend/app/web-gold/src/views/material/MaterialListNew.vue

@@ -101,7 +101,12 @@
               <SearchOutlined />
             </template>
           </a-input>
-          <a-button type="primary" class="upload-btn" @click="handleOpenUploadModal">
+          <a-button
+            type="primary"
+            class="upload-btn"
+            :disabled="activeCategory === 'MIX' && (!selectedGroupId || groupList.length === 0)"
+            @click="handleOpenUploadModal"
+          >
             <UploadOutlined />
             上传
           </a-button>