chore: 去掉未上线前的旧兼容垫片，板块流收口到首页

鉴权只认 cookie、SEO 只走 Next、sort 与推荐对齐；删除 Bearer、Go sitemap、post_type 回填等冗余路径。

Co-authored-by: Cursor <cursoragent@cursor.com>

backend/service/board.go

@@ -1,6 +1,8 @@
 package service
 
 import (
+	"time"
+
 	"github.com/freefire/jiang13-bbs/model"
 	"gorm.io/gorm"
 )
@@ -20,6 +22,32 @@ type BoardWithCount struct {
 	PostCount int64 `json:"post_count"`
 }
 
+// BoardModerator 板块管理员公开资料
+type BoardModerator struct {
+	ID       uint   `json:"id"`
+	Username string `json:"username"`
+	Nickname string `json:"nickname"`
+	Avatar   string `json:"avatar"`
+}
+
+// BoardSidebarStats 板级统计（不含在线）
+type BoardSidebarStats struct {
+	PostCount     int64 `json:"post_count"`
+	TodayPosts    int64 `json:"today_posts"`
+	CommentCount  int64 `json:"comment_count"`
+	TodayComments int64 `json:"today_comments"`
+}
+
+// BoardSidebarData 首页选中板块后的右栏聚合
+type BoardSidebarData struct {
+	Board       BoardWithCount    `json:"board"`
+	Moderators  []BoardModerator  `json:"moderators"`
+	Stats       BoardSidebarStats `json:"stats"`
+	Hot         []PostListItem    `json:"hot"`
+	ActiveUsers []ActiveUser      `json:"active_users"`
+	Checkin     *CheckinStatus    `json:"checkin,omitempty"`
+}
+
 // List 获取所有板块（按 sort_order 排序），附带各板块已发布帖子数（板块目录页展示用）
 func (s *BoardService) List() ([]BoardWithCount, error) {
 	var boards []model.Board
@@ -56,3 +84,141 @@ func (s *BoardService) Get(id uint) (*model.Board, error) {
 	}
 	return &board, nil
 }
+
+// Sidebar 首页板块右栏：管理员 + 概况统计 + 本板热门/活跃
+func (s *BoardService) Sidebar(boardID uint) (*BoardSidebarData, error) {
+	board, err := s.Get(boardID)
+	if err != nil {
+		return nil, err // 含 gorm.ErrRecordNotFound
+	}
+
+	data := &BoardSidebarData{
+		Board:       BoardWithCount{Board: *board},
+		Moderators:  []BoardModerator{},
+		Hot:         []PostListItem{},
+		ActiveUsers: []ActiveUser{},
+	}
+
+	now := time.Now()
+	dayStart := time.Date(now.Year(), now.Month(), now.Day(), 0, 0, 0, 0, now.Location())
+	weekStart := startOfWeek(now)
+
+	// 帖子总数 / 今日新帖
+	if err := s.db.Model(&model.Post{}).
+		Where("board_id = ? AND status = ?", boardID, model.ContentStatusPublished).
+		Count(&data.Stats.PostCount).Error; err != nil {
+		return nil, err
+	}
+	data.Board.PostCount = data.Stats.PostCount
+	if err := s.db.Model(&model.Post{}).
+		Where("board_id = ? AND status = ? AND created_at >= ?", boardID, model.ContentStatusPublished, dayStart).
+		Count(&data.Stats.TodayPosts).Error; err != nil {
+		return nil, err
+	}
+
+	// 评论总数 / 今日评论（经 posts.board_id）
+	if err := s.db.Model(&model.Comment{}).
+		Joins("JOIN posts ON posts.id = comments.post_id AND posts.deleted_at IS NULL").
+		Where("posts.board_id = ? AND posts.status = ? AND comments.status = ?",
+			boardID, model.ContentStatusPublished, model.ContentStatusPublished).
+		Count(&data.Stats.CommentCount).Error; err != nil {
+		return nil, err
+	}
+	if err := s.db.Model(&model.Comment{}).
+		Joins("JOIN posts ON posts.id = comments.post_id AND posts.deleted_at IS NULL").
+		Where("posts.board_id = ? AND posts.status = ? AND comments.status = ? AND comments.created_at >= ?",
+			boardID, model.ContentStatusPublished, model.ContentStatusPublished, dayStart).
+		Count(&data.Stats.TodayComments).Error; err != nil {
+		return nil, err
+	}
+
+	// 板块管理员：仅 board_admin 且授权本板、未封禁
+	var mods []model.User
+	if err := s.db.Table("users").
+		Select("users.id, users.username, users.nickname, users.avatar").
+		Joins("JOIN user_boards ON user_boards.user_id = users.id AND user_boards.board_id = ?", boardID).
+		Where("users.role = ? AND users.banned = ? AND users.deleted_at IS NULL", model.RoleBoardAdmin, false).
+		Order("users.id ASC").
+		Find(&mods).Error; err != nil {
+		return nil, err
+	}
+	for _, u := range mods {
+		data.Moderators = append(data.Moderators, BoardModerator{
+			ID:       u.ID,
+			Username: u.Username,
+			Nickname: u.Nickname,
+			Avatar:   u.Avatar,
+		})
+	}
+
+	// 本板热门
+	var hotPosts []model.Post
+	if err := s.db.Where("board_id = ? AND status = ? AND pinned = 0", boardID, model.ContentStatusPublished).
+		Order("(like_count + comment_count * 2) DESC, created_at DESC").
+		Limit(5).Preload("Board").Preload("User").Find(&hotPosts).Error; err != nil {
+		return nil, err
+	}
+	data.Hot = toPostListItems(hotPosts)
+
+	// 本板本周活跃
+	type activityRow struct {
+		UserID       uint
+		PostCount    int64
+		CommentCount int64
+	}
+	var rows []activityRow
+	activitySQL := `
+SELECT a.user_id AS user_id,
+       SUM(a.is_post) AS post_count,
+       SUM(1 - a.is_post) AS comment_count
+FROM (
+	SELECT user_id, 1 AS is_post FROM posts
+	WHERE status = ? AND board_id = ? AND created_at >= ? AND deleted_at IS NULL
+	UNION ALL
+	SELECT c.user_id, 0 AS is_post FROM comments c
+	JOIN posts p ON p.id = c.post_id AND p.deleted_at IS NULL
+	WHERE c.status = ? AND c.created_at >= ? AND c.deleted_at IS NULL
+	  AND p.board_id = ? AND p.status = ?
+) AS a
+JOIN users AS u ON u.id = a.user_id
+WHERE u.banned = ? AND u.deleted_at IS NULL
+GROUP BY a.user_id
+ORDER BY COUNT(*) DESC, a.user_id ASC
+LIMIT 5`
+	if err := s.db.Raw(activitySQL,
+		model.ContentStatusPublished, boardID, weekStart,
+		model.ContentStatusPublished, weekStart, boardID, model.ContentStatusPublished,
+		false).Scan(&rows).Error; err != nil {
+		return nil, err
+	}
+	if len(rows) > 0 {
+		ids := make([]uint, 0, len(rows))
+		for _, r := range rows {
+			ids = append(ids, r.UserID)
+		}
+		var users []model.User
+		if err := s.db.Where("id IN ?", ids).Find(&users).Error; err != nil {
+			return nil, err
+		}
+		userMap := make(map[uint]model.User, len(users))
+		for _, u := range users {
+			userMap[u.ID] = u
+		}
+		for _, r := range rows {
+			u, ok := userMap[r.UserID]
+			if !ok {
+				continue
+			}
+			data.ActiveUsers = append(data.ActiveUsers, ActiveUser{
+				ID:           u.ID,
+				Username:     u.Username,
+				Nickname:     u.Nickname,
+				Avatar:       u.Avatar,
+				PostCount:    r.PostCount,
+				CommentCount: r.CommentCount,
+			})
+		}
+	}
+
+	return data, nil
+}