🗑️ feat(token): implement batch token deletion API & front-end integration

• Back-end
  • model/token.go
    • Add `BatchDeleteTokens(ids []int, userId int)` – transactional DB removal + async Redis cache cleanup.
  • controller/token.go
    • Introduce `TokenBatch` DTO and `DeleteTokenBatch` handler calling the model layer; returns amount deleted.
  • router/api-router.go
    • Register `POST /api/token/batch` route (user-scoped).

• Front-end (TokensTable.js)
  • Replace per-token deletion loops with single request to `/api/token/batch`.
  • Display dynamic i18n message: “Deleted {{count}} tokens!”.
  • Add modal confirmation:
    • Title “Batch delete token”.
    • Content “Are you sure you want to delete the selected {{count}} tokens?”.
  • UI/UX tweaks
    • Responsive button group (flex-wrap, mobile line-break).
    • Clear `selectedKeys` after refresh / successful deletion to avoid ghost selections.

• i18n
  • Ensure placeholder style matches translation keys (`{{count}}`).

This commit delivers efficient, scalable token management and an improved user experience across devices.

model/token.go

@@ -327,3 +327,37 @@ func CountUserTokens(userId int) (int64, error) {
 	err := DB.Model(&Token{}).Where("user_id = ?", userId).Count(&total).Error
 	return total, err
 }
+
+// BatchDeleteTokens 删除指定用户的一组令牌，返回成功删除数量
+func BatchDeleteTokens(ids []int, userId int) (int, error) {
+	if len(ids) == 0 {
+		return 0, errors.New("ids 不能为空！")
+	}
+
+	tx := DB.Begin()
+
+	var tokens []Token
+	if err := tx.Where("user_id = ? AND id IN (?)", userId, ids).Find(&tokens).Error; err != nil {
+		tx.Rollback()
+		return 0, err
+	}
+
+	if err := tx.Where("user_id = ? AND id IN (?)", userId, ids).Delete(&Token{}).Error; err != nil {
+		tx.Rollback()
+		return 0, err
+	}
+
+	if err := tx.Commit().Error; err != nil {
+		return 0, err
+	}
+
+	if common.RedisEnabled {
+		gopool.Go(func() {
+			for _, t := range tokens {
+				_ = cacheDeleteToken(t.Key)
+			}
+		})
+	}
+
+	return len(tokens), nil
+}