chore: 移除项目内无用代码（28 文件）

- 清理任务面板/SPA 化改造遗留的未使用变量与函数（模板管理配套 6 函数、
  payloadForDisplay/showTip/hasRunning/schedulePoll/removeMatchedRowLocally 等 30+ 处）
- 清理未使用 import（getBrandTemplateXlsxUrl/uploadTempFileToJava/getProductRiskTasksBatch 等）
- useTaskProgressLoop 改为仅类型导入；progress/task-request 缓存未用参数精简
- DeleteBrandRunService 删除永不执行的 taskItems 死分支
- 全量 vue-tsc（含 --noUnusedLocals/--noUnusedParameters）0 错误；648 测试全过

frontend-vue/src/pages/brand/components/BrandPublishTab.vue

@@ -452,18 +452,6 @@ function toPublishTaskView(detail: PublishTaskDetailVo): TaskItemView {
   }
 }
 
-const summary = computed(() => {
-  const files = visibleTasks.value.flatMap((detail) => detail.files || [])
-  const successCount = files.filter((file) => ['SUCCESS', 'COMPLETED'].includes(normalizeStatus(file.status))).length
-  const failedCount = files.filter((file) => ['FAILED', 'CANCELLED'].includes(normalizeStatus(file.status))).length
-  return {
-    total: files.length,
-    completed: successCount + failedCount,
-    successCount,
-    failedCount,
-  }
-})
-
 const operationHint = computed(() => {
   if (uploading.value) return '正在逐个上传文件到后端...'
   if (parsing.value) return '正在解析 Excel、匹配店铺并创建批次...'