fix(batch): show total size in progress header again

The #228 progress redesign dropped the total size that the old
batch progress message displayed. Add a TotalSize data field
(actual known sizes, formatted via dlutil.FormatSize) to the
batch status header template in both locales.

common/i18n/locale/en.yaml

@@ -351,7 +351,7 @@ bot:
       info_filename_prefix: "Filename: "
       info_prompt_select_storage: "\nPlease select storage"
     progress:
-      batch_status_header: "<b>📦 Processing</b>\n\nFiles: <code>{{.Total}}</code>\nStatus: ✅ <code>{{.Completed}}</code> | 📥 <code>{{.Downloaded}}</code> | ⏳ <code>{{.Waiting}}</code>\nTotal speed: ⬇️ <code>{{.DownloadSpeed}}</code> | ⬆️ <code>{{.UploadSpeed}}</code>"
+      batch_status_header: "<b>📦 Processing</b>\n\nFiles: <code>{{.Total}}</code> | Total size: <code>{{.TotalSize}}</code>\nStatus: ✅ <code>{{.Completed}}</code> | 📥 <code>{{.Downloaded}}</code> | ⏳ <code>{{.Waiting}}</code>\nTotal speed: ⬇️ <code>{{.DownloadSpeed}}</code> | ⬆️ <code>{{.UploadSpeed}}</code>"
       batch_item_downloading: "<blockquote><b>⬇️ {{.Index}}/{{.Total}} Downloading</b>\n<code>{{.Name}}</code>\n{{.Bar}} <code>{{.Progress}}%</code>\nSpeed: <code>{{.Speed}}</code>\nSize: <code>{{.Current}}</code> / <code>{{.Size}}</code></blockquote>"
       batch_item_downloading_unknown: "<blockquote><b>⬇️ {{.Index}}/{{.Total}} Downloading</b>\n<code>{{.Name}}</code>\nSpeed: <code>{{.Speed}}</code>\nSize: <code>{{.Current}}</code> / unknown</blockquote>"
       batch_item_transferring: "<blockquote><b>↕️ {{.Index}}/{{.Total}} Transferring</b>\n<code>{{.Name}}</code>\n{{.Bar}} <code>{{.Progress}}%</code>\nSpeed: <code>{{.Speed}}</code>\nSize: <code>{{.Current}}</code> / <code>{{.Size}}</code></blockquote>"

common/i18n/locale/zh-Hans.yaml

@@ -352,7 +352,7 @@ bot:
       info_filename_prefix: "文件名: "
       info_prompt_select_storage: "\n请选择存储位置"
     progress:
-      batch_status_header: "<b>📦 正在处理</b>\n\n文件：<code>{{.Total}}</code>\n状态：✅ <code>{{.Completed}}</code> ｜ 📥 <code>{{.Downloaded}}</code> ｜ ⏳ <code>{{.Waiting}}</code>\n总速度：⬇️ <code>{{.DownloadSpeed}}</code> ｜ ⬆️ <code>{{.UploadSpeed}}</code>"
+      batch_status_header: "<b>📦 正在处理</b>\n\n文件：<code>{{.Total}}</code> ｜ 总大小：<code>{{.TotalSize}}</code>\n状态：✅ <code>{{.Completed}}</code> ｜ 📥 <code>{{.Downloaded}}</code> ｜ ⏳ <code>{{.Waiting}}</code>\n总速度：⬇️ <code>{{.DownloadSpeed}}</code> ｜ ⬆️ <code>{{.UploadSpeed}}</code>"
       batch_item_downloading: "<blockquote><b>⬇️ {{.Index}}/{{.Total}} 下载中</b>\n<code>{{.Name}}</code>\n{{.Bar}} <code>{{.Progress}}%</code>\n速度：<code>{{.Speed}}</code>\n大小：<code>{{.Current}}</code> / <code>{{.Size}}</code></blockquote>"
       batch_item_downloading_unknown: "<blockquote><b>⬇️ {{.Index}}/{{.Total}} 下载中</b>\n<code>{{.Name}}</code>\n速度：<code>{{.Speed}}</code>\n大小：<code>{{.Current}}</code> / 未知</blockquote>"
       batch_item_transferring: "<blockquote><b>↕️ {{.Index}}/{{.Total}} 传输中</b>\n<code>{{.Name}}</code>\n{{.Bar}} <code>{{.Progress}}%</code>\n速度：<code>{{.Speed}}</code>\n大小：<code>{{.Current}}</code> / <code>{{.Size}}</code></blockquote>"

core/tasks/batchtfile/progress.go

@@ -152,6 +152,7 @@ func buildBatchProgressMessage(info TaskInfo, skipped []string, activeLimit int)
 	uploadSpeedText := formatSpeed(uploadSpeed)
 	header := localizedProgressMarkup(i18nk.BotMsgProgressBatchStatusHeader, map[string]any{
 		"Total":         total,
+		"TotalSize":     dlutil.FormatSize(info.ActualTotalSize()),
 		"Completed":     completed,
 		"Downloaded":    downloaded,
 		"Waiting":       waiting,

core/tasks/batchtfile/progress_regression_test.go

@@ -95,6 +95,30 @@ func TestBatchProgressShowsTransferSpeedAndSize(t *testing.T) {
 	}
 }
 
+func TestBatchProgressHeaderShowsTotalSize(t *testing.T) {
+	useProgressRegressionLocale(t)
+	task := newProgressRegressionTask(nil,
+		progressRegressionFile{"first", 1024},
+		progressRegressionFile{"second", 1024},
+	)
+	message := buildBatchProgressMessage(task, nil, 2)
+	if message.Err != nil {
+		t.Fatalf("buildBatchProgressMessage() failed: %v", message.Err)
+	}
+	assertProgressRegressionContains(t, message.Text,
+		"文件：2 ｜ 总大小：2.00 KB",
+	)
+
+	i18n.Init("en")
+	english := buildBatchProgressMessage(task, nil, 2)
+	if english.Err != nil {
+		t.Fatalf("English batch template failed: %v", english.Err)
+	}
+	assertProgressRegressionContains(t, english.Text,
+		"Files: 2 | Total size: 2.00 KB",
+	)
+}
+
 func TestBatchProgressLimitsRowsWithoutHidingActiveUpload(t *testing.T) {
 	useProgressRegressionLocale(t)
 	task := newProgressRegressionTask(nil,