feat: 用户徽章与等级体系，积分经济管理重构

- 新增徽章系统：badge 服务与 handler、管理端配置页、BadgeChip/LevelBadge 展示组件
- 新增等级模型：model/level 及前端 levels 元数据
- 管理端经济模块拆分为 points/badges/levels 独立页面，EconomySettings 迁入设置
- 积分、签到、评论等服务适配等级与徽章逻辑

backend/service/comment.go

@@ -23,12 +23,19 @@ var (
 // CommentService 评论服务
 type CommentService struct {
 	db *gorm.DB
+	setting *SettingService
 }
 
 func NewCommentService(db *gorm.DB) *CommentService {
 	return &CommentService{db: db}
 }
 
+// WithSetting 注入站点设置（回复奖励规则；未注入时奖励关闭）
+func (s *CommentService) WithSetting(setting *SettingService) *CommentService {
+	s.setting = setting
+	return s
+}
+
 // CommentNode 评论树节点：嵌入 model.Comment 使 JSON 字段拍平，replies 为空时省略
 type CommentNode struct {
 	model.Comment
@@ -84,7 +91,7 @@ func (s *CommentService) ListFloorPaged(postID, boardID, viewerID uint, actor *A
 	if err := base.Session(&gorm.Session{}).
 		Where("parent_id IS NULL").
 		Order("created_at ASC").
-		Preload("User").
+		Preload("User").Preload("User.Badges.Badge").
 		Offset((page - 1) * size).
 		Limit(size).
 		Find(&roots).Error; err != nil {
@@ -100,7 +107,7 @@ func (s *CommentService) ListFloorPaged(postID, boardID, viewerID uint, actor *A
 	}
 	replyQ := applyCommentListVisibility(s.db.Unscoped().Where("root_id IN (?)", rootIDs), boardID, viewerID, actor)
 	var replies []model.Comment
-	if err := replyQ.Order("created_at ASC").Preload("User").Find(&replies).Error; err != nil {
+	if err := replyQ.Order("created_at ASC").Preload("User").Preload("User.Badges.Badge").Find(&replies).Error; err != nil {
 		return nil, 0, 0, err
 	}
 
@@ -355,9 +362,19 @@ func (s *CommentService) Create(userID, postID uint, content string, parentID *u
 	// 仅已发布评论立即计入评论数；待审评论通过审核时才 +1
 	if comment.Status == model.ContentStatusPublished {
 		s.db.Model(&post).UpdateColumn("comment_count", gorm.Expr("comment_count + 1"))
+		// 回复奖励（可配置；待审不发且过审不补发，防拒审刷分）
+		if s.setting != nil {
+			if rules, err := s.setting.PointsRules(); err == nil {
+				s.db.Transaction(func(tx *gorm.DB) error {
+					RewardIfConfigured(tx, userID, rules.ReplyReward, rules.ReplyDailyCap,
+						model.PointReasonReplyReward, "comment", comment.ID, "回复奖励："+post.Title)
+					return nil
+				})
+			}
+		}
 	}
 	// 预加载用户
-	s.db.Preload("User").First(comment, comment.ID)
+	s.db.Preload("User").Preload("User.Badges.Badge").First(comment, comment.ID)
 	return comment, parent, nil
 }
 
@@ -648,7 +665,7 @@ func (s *CommentService) Update(actor *Actor, commentID, userID uint, content st
 		return nil, err
 	}
 
-	if err := s.db.Preload("User").First(&comment, comment.ID).Error; err != nil {
+	if err := s.db.Preload("User").Preload("User.Badges.Badge").First(&comment, comment.ID).Error; err != nil {
 		return nil, err
 	}
 	node := toCommentNode(comment, nil, false, userID, nil)