🚀 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.).

controller/token.go

@@ -12,15 +12,15 @@ func GetAllTokens(c *gin.Context) {
 	userId := c.GetInt("id")
 	p, _ := strconv.Atoi(c.Query("p"))
 	size, _ := strconv.Atoi(c.Query("size"))
-	if p < 0 {
-		p = 0
+	if p < 1 {
+		p = 1
 	}
 	if size <= 0 {
 		size = common.ItemsPerPage
 	} else if size > 100 {
 		size = 100
 	}
-	tokens, err := model.GetAllUserTokens(userId, p*size, size)
+	tokens, err := model.GetAllUserTokens(userId, (p-1)*size, size)
 	if err != nil {
 		c.JSON(http.StatusOK, gin.H{
 			"success": false,
@@ -28,10 +28,18 @@ func GetAllTokens(c *gin.Context) {
 		})
 		return
 	}
+	// Get total count for pagination
+	total, _ := model.CountUserTokens(userId)
+
 	c.JSON(http.StatusOK, gin.H{
 		"success": true,
 		"message": "",
-		"data":    tokens,
+		"data": gin.H{
+			"items":     tokens,
+			"total":     total,
+			"page":      p,
+			"page_size": size,
+		},
 	})
 	return
 }