🚀 feat(pagination): unify backend-driven pagination & improve channel tag aggregation

SUMMARY
• Migrated Token, Task, Midjourney, Channel, Redemption tables to true server-side pagination.
• Added total / page / page_size metadata in API responses; switched all affected React tables to consume new structure.
• Implemented counting helpers:
  – model/token.go CountUserTokens
  – model/task.go TaskCountAllTasks / TaskCountAllUserTask
  – model/midjourney.go CountAllTasks / CountAllUserTask
  – model/channel.go CountAllChannels / CountAllTags
• Refactored controllers (token, task, midjourney, channel) for 1-based paging & aggregated returns.
• Redesigned `ChannelsTable.js`:
  – `loadChannels`, `syncPageData`, `enrichChannels` for tag-mode grouping without recursion.
  – Fixed runtime white-screen (maximum call-stack) by removing child duplication.
  – Pagination, search, tag-mode, idSort all hot-reload correctly.
• Removed unused `log` import in controller/midjourney.go.

BREAKING CHANGES
Front-end consumers must now expect data.items / total / page / page_size from list endpoints (`/api/channel`, `/api/task`, `/api/mj`, `/api/token`, etc.).

model/channel.go

@@ -583,3 +583,17 @@ func BatchSetChannelTag(ids []int, tag *string) error {
 	// 提交事务
 	return tx.Commit().Error
 }
+
+// CountAllChannels returns total channels in DB
+func CountAllChannels() (int64, error) {
+	var total int64
+	err := DB.Model(&Channel{}).Count(&total).Error
+	return total, err
+}
+
+// CountAllTags returns number of non-empty distinct tags
+func CountAllTags() (int64, error) {
+	var total int64
+	err := DB.Model(&Channel{}).Where("tag is not null AND tag != ''").Distinct("tag").Count(&total).Error
+	return total, err
+}

model/midjourney.go

@@ -166,3 +166,40 @@ func MjBulkUpdateByTaskIds(taskIDs []int, params map[string]any) error {
 		Where("id in (?)", taskIDs).
 		Updates(params).Error
 }
+
+// CountAllTasks returns total midjourney tasks for admin query
+func CountAllTasks(queryParams TaskQueryParams) int64 {
+	var total int64
+	query := DB.Model(&Midjourney{})
+	if queryParams.ChannelID != "" {
+		query = query.Where("channel_id = ?", queryParams.ChannelID)
+	}
+	if queryParams.MjID != "" {
+		query = query.Where("mj_id = ?", queryParams.MjID)
+	}
+	if queryParams.StartTimestamp != "" {
+		query = query.Where("submit_time >= ?", queryParams.StartTimestamp)
+	}
+	if queryParams.EndTimestamp != "" {
+		query = query.Where("submit_time <= ?", queryParams.EndTimestamp)
+	}
+	_ = query.Count(&total).Error
+	return total
+}
+
+// CountAllUserTask returns total midjourney tasks for user
+func CountAllUserTask(userId int, queryParams TaskQueryParams) int64 {
+	var total int64
+	query := DB.Model(&Midjourney{}).Where("user_id = ?", userId)
+	if queryParams.MjID != "" {
+		query = query.Where("mj_id = ?", queryParams.MjID)
+	}
+	if queryParams.StartTimestamp != "" {
+		query = query.Where("submit_time >= ?", queryParams.StartTimestamp)
+	}
+	if queryParams.EndTimestamp != "" {
+		query = query.Where("submit_time <= ?", queryParams.EndTimestamp)
+	}
+	_ = query.Count(&total).Error
+	return total
+}

model/task.go

@@ -302,3 +302,64 @@ func SumUsedTaskQuota(queryParams SyncTaskQueryParams) (stat []TaskQuotaUsage, e
 	err = query.Select("mode, sum(quota) as count").Group("mode").Find(&stat).Error
 	return stat, err
 }
+
+// TaskCountAllTasks returns total tasks that match the given query params (admin usage)
+func TaskCountAllTasks(queryParams SyncTaskQueryParams) int64 {
+	var total int64
+	query := DB.Model(&Task{})
+	if queryParams.ChannelID != "" {
+		query = query.Where("channel_id = ?", queryParams.ChannelID)
+	}
+	if queryParams.Platform != "" {
+		query = query.Where("platform = ?", queryParams.Platform)
+	}
+	if queryParams.UserID != "" {
+		query = query.Where("user_id = ?", queryParams.UserID)
+	}
+	if len(queryParams.UserIDs) != 0 {
+		query = query.Where("user_id in (?)", queryParams.UserIDs)
+	}
+	if queryParams.TaskID != "" {
+		query = query.Where("task_id = ?", queryParams.TaskID)
+	}
+	if queryParams.Action != "" {
+		query = query.Where("action = ?", queryParams.Action)
+	}
+	if queryParams.Status != "" {
+		query = query.Where("status = ?", queryParams.Status)
+	}
+	if queryParams.StartTimestamp != 0 {
+		query = query.Where("submit_time >= ?", queryParams.StartTimestamp)
+	}
+	if queryParams.EndTimestamp != 0 {
+		query = query.Where("submit_time <= ?", queryParams.EndTimestamp)
+	}
+	_ = query.Count(&total).Error
+	return total
+}
+
+// TaskCountAllUserTask returns total tasks for given user
+func TaskCountAllUserTask(userId int, queryParams SyncTaskQueryParams) int64 {
+	var total int64
+	query := DB.Model(&Task{}).Where("user_id = ?", userId)
+	if queryParams.TaskID != "" {
+		query = query.Where("task_id = ?", queryParams.TaskID)
+	}
+	if queryParams.Action != "" {
+		query = query.Where("action = ?", queryParams.Action)
+	}
+	if queryParams.Status != "" {
+		query = query.Where("status = ?", queryParams.Status)
+	}
+	if queryParams.Platform != "" {
+		query = query.Where("platform = ?", queryParams.Platform)
+	}
+	if queryParams.StartTimestamp != 0 {
+		query = query.Where("submit_time >= ?", queryParams.StartTimestamp)
+	}
+	if queryParams.EndTimestamp != 0 {
+		query = query.Where("submit_time <= ?", queryParams.EndTimestamp)
+	}
+	_ = query.Count(&total).Error
+	return total
+}

model/token.go

@@ -320,3 +320,10 @@ func decreaseTokenQuota(id int, quota int) (err error) {
 	).Error
 	return err
 }
+
+// CountUserTokens returns total number of tokens for the given user, used for pagination
+func CountUserTokens(userId int) (int64, error) {
+	var total int64
+	err := DB.Model(&Token{}).Where("user_id = ?", userId).Count(&total).Error
+	return total, err
+}