chore: bump version to 0.2.11

feat: 移动端底部导航可配置与工作区导航、置顶后台等前端调整
feat: 帖子分级置顶（板块/全站）与板块管理员置顶权限、消息管理权限调整
2026-10-16 16:31:09 +08:00 · 2026-10-16 16:26:08 +08:00 · 2026-10-15 23:35:30 +08:00
48 changed files with 1274 additions and 240 deletions
--- a/.cursor/project_memory.md
+++ b/.cursor/project_memory.md
@@ -150,9 +150,9 @@ data volume     ──► Go 的 dataDir（与本地 backend/data 语义一致

 ## 四级 RBAC + 内容审核（2026-09）

- 角色：`owner`(全站唯一，不可改角色/封禁；独占彻底删除) > `super_admin`(全站后台+群聊全站监管，仅 owner 可授予) > `admin`(公告+全站帖/评论审核软删+置顶加精) > `board_admin`(仅授权板审核/软删普通用户内容，不可软删 admin+ 作者，默认无消息管理) > `user`。RoleLevel 0/30/50/80/100，staff=board_admin 及以上
+- 角色：`owner`(全站唯一，不可改角色/封禁；独占彻底删除) > `super_admin`(全站后台，仅 owner 可授予) > `admin`(公告+全站帖/评论审核软删+置顶加精) > `board_admin`(仅授权板审核/软删普通用户内容，不可软删 admin+ 作者，默认无消息管理) > `user`。RoleLevel 0/30/50/80/100，staff=board_admin 及以上
 - Actor 由 RequireStaff 每请求从 DB 现取（角色+board_ids+can_manage_messages）；RequirePerm(announcements/users/settings/messages)；板块隔离按 BoardIDs；板管仪表盘 analytics 按授权板过滤
- 消息：站长可授 `can_manage_messages`（全站群聊后台，无私聊）；站长可在群内任命 `ChatRoleAdmin`；站长/超管 `CanOverseeChat` 含私聊；禁言 API 已接
+- 消息：站长可授 `can_manage_messages`（全站群聊后台，无私聊）；超管亦需授予才进入后台消息管理并获全站监管（含私聊），站长固有；站长可在群内任命 `ChatRoleAdmin`；`Actor.CanOverseeChat()` = 站长 || (超管 && can_manage_messages)；禁言 API 已接
 - 彻底删除帖/评：仅 owner；其余管理员仅软删+恢复
 - 发帖/评论：staff 直发 published，普通用户进 pending；pending 不计 comment_count（ApproveComment 时 +1，删除只减 published）；公开列表仅 published；作者/staff 可经详情页看 pending/rejected（GetByIDForViewer + EnsurePostVisible）
 - 审核端点 7 个直挂 /api/admin/moderation/*；通过/拒绝发 approved/rejected 通知（拒绝需 reason，评论通过时补发 comment/reply 业务通知）；ErrModerationForbidden→403、ErrNotPending→400、ErrAuthorProtected/ErrPurgeOwnerOnly→403
--- a/2
+++ b/2
@@ -1 +1 @@
-0.2.10
+0.2.11
--- a/backend/cmd/jiang13/main.go
+++ b/backend/cmd/jiang13/main.go
@@ -21,8 +21,10 @@ func main() {
 		log.Fatalf("数据库初始化失败: %v", err)
 	}

-	// 生产 HTTPS 启用 __Host- 认证 cookie 前缀（须在路由注册、读写 cookie 前配置）
-	service.ConfigureCookieNames(!cfg.DevMode)
+	// 启用 __Host- 认证 cookie 前缀（须在路由注册、读写 cookie 前配置）。
+	// 以前是 !DevMode 硬绑定，现在解耦：根据 SITE_URL scheme 或 FORCE_HTTPS 判断，
+	// 内网 HTTP 部署零配置即可跑，反代 TLS 但后端只看到 HTTP 时设 FORCE_HTTPS=true。
+	service.ConfigureCookieNames(cfg.IsSecureOrigin())
 	// 过期/已吊销 refresh token 定期清理
 	service.StartRefreshTokenCleanup(model.DB)
 	// 悬赏过期退回 / 抽奖到期开奖
--- a/backend/config/config.go
+++ b/backend/config/config.go
@@ -24,6 +24,7 @@ type Config struct {
 	DevMode           bool
 	SiteURL           string   // 对外站点 origin，如 https://bbs.example.com；生产 CORS 用
 	CORSOrigins       []string // 额外允许的 CORS origin（逗号分隔环境变量）
+	ForceHTTPS        bool     // 强制启用 HTTPS 安全 cookie / HSTS / __Host- 前缀；反代 TLS 但后端只看到 HTTP 时设 true
 }

 // appIniKey 描述 app.ini 中应由启动补全的键（已有值不改写）。
@@ -43,7 +44,8 @@ var appIniSchema = []appIniKey{
 	{section: "paths", key: "DATA", value: "data"},
 	{section: "app", key: "DEV_MODE", value: "true"},
 	{section: "app", key: "SITE_URL", value: "", comment: "对外正式 origin，无尾斜杠。账号邮件链接与 Next 的 SITE_URL 必须一致。\n本地可填 http://localhost:3000；生产填 https://bbs.example.com。环境变量 SITE_URL 优先。"},
-	{section: "app", key: "CORS_ORIGINS", value: "", comment: "额外 CORS origin，逗号分隔。环境变量 CORS_ORIGINS 优先。同源反代通常可留空。"},
+	{section: "app", key: "CORS_ORIGINS", value: "", comment: "额外 CORS origin，逗号分隔。环境变量 CORS_ORIGINS 优先。"},
+	{section: "app", key: "FORCE_HTTPS", value: "false", comment: "强制启用 HTTPS 安全 cookie / HSTS / __Host- 前缀。反代 TLS 但后端只看到 HTTP 时设 true。\n默认自动根据 SITE_URL scheme 判断。环境变量 FORCE_HTTPS 优先。"},
 }

 // Parse 解析配置：环境变量 > app.ini > 默认值。
@@ -98,6 +100,9 @@ func Parse() (*Config, error) {
 	if v := strings.TrimSpace(os.Getenv("CORS_ORIGINS")); v != "" {
 		cfg.CORSOrigins = splitCSVOrigins(v)
 	}
+	if v := strings.TrimSpace(os.Getenv("FORCE_HTTPS")); v != "" {
+		cfg.ForceHTTPS = strings.EqualFold(v, "true") || v == "1"
+	}
 	if v := strings.TrimSpace(os.Getenv("DATA_DIR")); v != "" {
 		abs, err := filepath.Abs(v)
 		if err != nil {
@@ -179,6 +184,9 @@ func applyIni(cfg *Config, f *ini.File) {
 			cfg.CORSOrigins = splitCSVOrigins(v)
 		}
 	}
+	if s := f.Section("app"); s.HasKey("FORCE_HTTPS") {
+		cfg.ForceHTTPS = s.Key("FORCE_HTTPS").MustBool(false)
+	}
 }

 // loadAndEnsureAppIni 加载 app.ini；不存在则按 schema 新建；已存在则只补缺失键。
@@ -227,6 +235,19 @@ func loadAndEnsureAppIni(path string) (*ini.File, error) {
 	return f, nil
 }

+// IsSecureOrigin 判断对外站点是否走 HTTPS，用于控制 cookie Secure 标志、HSTS 头、__Host- cookie 前缀。
+// 优先级：FORCE_HTTPS 显式设置 > SITE_URL scheme 推断。
+// 本地 dev 未填 SITE_URL 时按 http 处理，不会误开安全策略。
+func (c *Config) IsSecureOrigin() bool {
+	if c.ForceHTTPS {
+		return true
+	}
+	if c.SiteURL == "" {
+		return false
+	}
+	return strings.HasPrefix(c.SiteURL, "https://")
+}
+
 // AllowOrigin 供 CORS 中间件判断浏览器 Origin。
 // 开发态只放行 localhost / 127.0.0.1 的 3000 端口（与 next dev 一致）；
 // 生产态放行 SITE_URL 与 CORS_ORIGINS。同源反代下浏览器不依赖 CORS，此列表作兜底。
--- a/backend/handler/auth.go
+++ b/backend/handler/auth.go
@@ -164,7 +164,7 @@ func (h *Handlers) Register(c *gin.Context) {
 		})
 		return
 	}
-	setAuthCookies(c, accessToken, refreshToken, !h.Cfg.DevMode)
+	setAuthCookies(c, accessToken, refreshToken, h.Cfg.IsSecureOrigin())
 	h.AdminUser.RecordLogin(loginUser.ID, req.Username, c.ClientIP(), c.Request.UserAgent(), true)
 	c.JSON(http.StatusOK, gin.H{
 		"user": gin.H{
@@ -212,7 +212,7 @@ func (h *Handlers) Login(c *gin.Context) {
 	h.AdminUser.RecordLogin(user.ID, req.Username, c.ClientIP(), c.Request.UserAgent(), true)
 	// dev 模式不设 Secure，生产环境需 HTTPS
 	h.Ops.ClearFailure(req.Username)
-	setAuthCookies(c, accessToken, refreshToken, !h.Cfg.DevMode)
+	setAuthCookies(c, accessToken, refreshToken, h.Cfg.IsSecureOrigin())
 	// 多会话并存：新登录不踢旧设备；仅当本次登录超出会话上限、淘汰了最旧
 	// 会话时广播告知（被淘汰设备 WS 在线则当场弹"登录已失效"，无需等
 	// access token 过期或硬刷新才发现）
@@ -244,13 +244,13 @@ func (h *Handlers) Refresh(c *gin.Context) {
 	if err != nil {
 		if errors.Is(err, service.ErrAccountBanned) {
 			// 账号已封禁：清 cookie 的同时给出可识别 code，前端弹封禁告知并强制下线
-			clearAuthCookies(c, !h.Cfg.DevMode)
+			clearAuthCookies(c, h.Cfg.IsSecureOrigin())
 			c.JSON(http.StatusForbidden, gin.H{"error": "账号已被封禁", "code": "account_banned"})
 			return
 		}
 		if errors.Is(err, service.ErrRefreshInvalid) || errors.Is(err, service.ErrRefreshExpired) {
 			// 登录态确实失效：清 cookie 要求重新登录（前端弹"登录已失效"）
-			clearAuthCookies(c, !h.Cfg.DevMode)
+			clearAuthCookies(c, h.Cfg.IsSecureOrigin())
 			c.JSON(http.StatusUnauthorized, gin.H{"error": "登录已过期，请重新登录"})
 			return
 		}
@@ -259,7 +259,7 @@ func (h *Handlers) Refresh(c *gin.Context) {
 		c.JSON(http.StatusServiceUnavailable, gin.H{"error": "登录刷新暂不可用，请稍后重试"})
 		return
 	}
-	setAuthCookies(c, accessToken, newRefresh, !h.Cfg.DevMode)
+	setAuthCookies(c, accessToken, newRefresh, h.Cfg.IsSecureOrigin())
 	c.JSON(http.StatusOK, gin.H{
 		"user": gin.H{
 			"id":       user.ID,
@@ -279,7 +279,7 @@ func (h *Handlers) Logout(c *gin.Context) {
 	if refreshToken, err := c.Cookie(service.RefreshCookieName); err == nil && refreshToken != "" {
 		_ = h.Auth.RevokeRefreshToken(refreshToken)
 	}
-	clearAuthCookies(c, !h.Cfg.DevMode)
+	clearAuthCookies(c, h.Cfg.IsSecureOrigin())
 	c.JSON(http.StatusOK, gin.H{"message": "已登出"})
 }

@@ -302,7 +302,7 @@ func (h *Handlers) ChangePassword(c *gin.Context) {
 		return
 	}
 	// 密码已改，token_version 已递增，旧 token 全部失效，清除 cookie 要求重新登录
-	clearAuthCookies(c, !h.Cfg.DevMode)
+	clearAuthCookies(c, h.Cfg.IsSecureOrigin())
 	c.JSON(http.StatusOK, gin.H{"message": "密码修改成功，请重新登录"})
 }

--- a/backend/handler/chat.go
+++ b/backend/handler/chat.go
@@ -69,7 +69,7 @@ func (h *Handlers) chatOversee(userID uint) bool {
 	if err != nil || actor == nil {
 		return false
 	}
-	return service.CanOverseeChat(actor.Role)
+	return actor.CanOverseeChat()
 }

 // RequireMessagesOpen 前台群聊/私聊闸门；关闭后一律 403。管理端 /api/admin/chat 不受影响。
@@ -673,7 +673,7 @@ func (h *Handlers) AdminChatMessages(c *gin.Context) {
 		"messages":      msgs,
 		"total":         total,
 		"page":          page,
-		"can_oversee":   service.CanOverseeChat(actor.Role),
+		"can_oversee":   actor.CanOverseeChat(),
 		"can_recall":    true,
 		"site_messages": actor.HasSiteMessagePerm(),
 	})
@@ -697,7 +697,7 @@ func (h *Handlers) AdminRecallChatMessage(c *gin.Context) {
 		c.JSON(http.StatusBadRequest, gin.H{"error": "消息 ID 无效"})
 		return
 	}
-	oversee := service.CanOverseeChat(actor.Role)
+	oversee := actor.CanOverseeChat()
 	msg, newly, err := h.Chat.RecallMessage(claims.ID, uint(roomID), uint(mid), oversee)
 	if err != nil {
 		c.JSON(chatErrToStatus(err), gin.H{"error": err.Error()})
--- a/backend/handler/moderation.go
+++ b/backend/handler/moderation.go
@@ -246,3 +246,55 @@ func (h *Handlers) execModeration(c *gin.Context, fn func(*service.Actor, uint)
 	h.broadcastModerationChanged()
 	c.JSON(http.StatusOK, gin.H{"message": "操作成功"})
 }
+
+// ===== 置顶顺序配置 =====
+
+// AdminListPinnedPosts 列出指定层级（level=1 板块 / 2 全站）的置顶帖，供后台排序
+func (h *Handlers) AdminListPinnedPosts(c *gin.Context) {
+	level, _ := strconv.Atoi(c.Query("level"))
+	boardID, _ := strconv.ParseUint(c.Query("board_id"), 10, 64)
+	if level != model.PinBoard && level != model.PinGlobal {
+		c.JSON(http.StatusBadRequest, gin.H{"error": "无效的置顶层级"})
+		return
+	}
+	items, err := h.Moderation.ListPinnedPosts(middleware.CurrentActor(c), level, uint(boardID))
+	if err != nil {
+		if errors.Is(err, service.ErrPinOrderForbidden) {
+			c.JSON(http.StatusForbidden, gin.H{"error": err.Error()})
+			return
+		}
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "获取置顶列表失败"})
+		return
+	}
+	c.JSON(http.StatusOK, gin.H{"posts": nonNilSlice(items)})
+}
+
+// AdminSavePinOrderRequest 置顶顺序保存请求
+type AdminSavePinOrderRequest struct {
+	Level   int    `json:"level" binding:"required"`
+	BoardID uint   `json:"board_id"`
+	IDs     []uint `json:"ids" binding:"required"`
+}
+
+// AdminSavePinOrder 保存置顶帖显示顺序（ids 数组顺序即展示顺序）
+func (h *Handlers) AdminSavePinOrder(c *gin.Context) {
+	var req AdminSavePinOrderRequest
+	if err := c.ShouldBindJSON(&req); err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": "参数错误"})
+		return
+	}
+	if req.Level != model.PinBoard && req.Level != model.PinGlobal {
+		c.JSON(http.StatusBadRequest, gin.H{"error": "无效的置顶层级"})
+		return
+	}
+	if err := h.Moderation.SavePinOrder(middleware.CurrentActor(c), req.Level, req.BoardID, req.IDs); err != nil {
+		if errors.Is(err, service.ErrPinOrderForbidden) {
+			c.JSON(http.StatusForbidden, gin.H{"error": err.Error()})
+			return
+		}
+		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+		return
+	}
+	h.broadcastFeedChanged("post", 0, req.BoardID, middleware.CurrentActor(c).ID)
+	c.JSON(http.StatusOK, gin.H{"message": "已保存"})
+}
--- a/backend/handler/post.go
+++ b/backend/handler/post.go
@@ -550,9 +550,12 @@ func (h *Handlers) DeletePost(c *gin.Context) {
 	c.JSON(http.StatusOK, gin.H{"message": "已删除"})
 }

-// TogglePin 切换帖子置顶（管理员及以上，板块管理员无此权限）
+// TogglePin 切换帖子置顶：管理员及以上切全站置顶，板块管理员切本板板块置顶
 func (h *Handlers) TogglePin(c *gin.Context) {
-	if !h.requireAdminOrAbove(c) {
+	claims := middleware.CurrentUser(c)
+	actor, err := h.Auth.LoadActor(claims.ID)
+	if err != nil {
+		c.JSON(http.StatusUnauthorized, gin.H{"error": "未登录"})
 		return
 	}
 	id, err := strconv.ParseUint(c.Param("id"), 10, 64)
@@ -560,9 +563,17 @@ func (h *Handlers) TogglePin(c *gin.Context) {
 		c.JSON(http.StatusBadRequest, gin.H{"error": "无效的帖子 ID"})
 		return
 	}
-	pinned, err := h.Post.TogglePin(uint(id))
+	level, _ := strconv.Atoi(c.Query("level"))
+	pinned, err := h.Post.TogglePin(uint(id), actor, level)
 	if err != nil {
+		switch {
+		case errors.Is(err, service.ErrPostNotFound):
+			c.JSON(http.StatusNotFound, gin.H{"error": err.Error()})
+		case errors.Is(err, service.ErrPostForbidden), errors.Is(err, service.ErrPinGlobalOnly):
+			c.JSON(http.StatusForbidden, gin.H{"error": err.Error()})
+		default:
 			c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+		}
 		return
 	}
 	c.JSON(http.StatusOK, gin.H{"pinned": pinned})
--- a/backend/handler/realtime.go
+++ b/backend/handler/realtime.go
@@ -61,7 +61,7 @@ func (h *Handlers) RealtimeWS(c *gin.Context) {
 	canOverseeChat := false
 	if actor, loadErr := h.Auth.LoadActor(claims.ID); loadErr == nil {
 		isStaff = actor.IsStaff()
-		canOverseeChat = service.CanOverseeChat(actor.Role)
+		canOverseeChat = actor.CanOverseeChat()
 	}

 	client := realtime.NewClient(
@@ -74,7 +74,7 @@ func (h *Handlers) RealtimeWS(c *gin.Context) {
 			return verr == nil
 		},
 		func() { h.Auth.TouchLastSeen(claims.ID) },
-		// 动态房间订阅鉴权：成员可订阅；站长/超管旁路可订阅任意群
+		// 动态房间订阅鉴权：成员可订阅；站长/已授权超管旁路可订阅任意群
 		func(room string) bool {
 			roomID, ok := parseWSChatRoom(room)
 			if !ok {
--- a/backend/middleware/security.go
+++ b/backend/middleware/security.go
@@ -5,8 +5,9 @@ import (
 )

 // SecurityHeaders 安全响应头中间件
-// 为所有响应添加安全头，降低 XSS、点击劫持、MIME 嗅探等风险
-func SecurityHeaders() gin.HandlerFunc {
+// 为所有响应添加安全头，降低 XSS、点击劫持、MIME 嗅探等风险。
+// secure=true 时额外下发 HSTS（仅 HTTPS origin 合法，HTTP 环境发 HSTS 属于误导）。
+func SecurityHeaders(secure bool) gin.HandlerFunc {
 	return func(c *gin.Context) {
 		// CSP：限制资源加载来源，降低 XSS 危害
 		c.Header("Content-Security-Policy",
@@ -20,8 +21,10 @@ func SecurityHeaders() gin.HandlerFunc {
 				"base-uri 'self'; "+
 				"form-action 'self'")

-		// HSTS：强制 HTTPS（生产环境生效，dev 模式浏览器会忽略）
+		// HSTS：仅 HTTPS origin 下发。HTTP 响应发 HSTS 是无效且误导的。
+		if secure {
 			c.Header("Strict-Transport-Security", "max-age=31536000; includeSubDomains; preload")
+		}

 		// 点击劫持防护
 		c.Header("X-Frame-Options", "DENY")
@@ -32,9 +35,6 @@ func SecurityHeaders() gin.HandlerFunc {
 		// 控制 Referer 信息泄露
 		c.Header("Referrer-Policy", "strict-origin-when-cross-origin")

-		// 禁止浏览器缓存敏感页面（可按需覆盖）
-		// c.Header("Cache-Control", "no-store, no-cache, must-revalidate, max-age=0")
-
 		c.Next()
 	}
 }
--- a/backend/model/db.go
+++ b/backend/model/db.go
@@ -69,6 +69,11 @@ func InitDB(dsn string) error {
 		return fmt.Errorf("自动迁移失败: %w", err)
 	}

+	// 帖子置顶分级：历史全站置顶（pinned=1）升为 2，避免存量置顶帖被降级为板块置顶
+	if err := preparePostPinLevels(db); err != nil {
+		return fmt.Errorf("帖子置顶分级迁移失败: %w", err)
+	}
+
 	// RBAC：把初始管理员（id 最小的 admin，通常即首个注册账号）升级为站长；
 	// 已存在 owner 时不动数据，保证幂等
 	if err := ensureOwnerRole(db); err != nil {
@@ -180,6 +185,25 @@ func prepareAnnouncementPinnedColumn(db *gorm.DB) error {
 	return db.Exec(`ALTER TABLE announcements ADD COLUMN pinned boolean NOT NULL DEFAULT false`).Error
 }

+// preparePostPinLevels 一次性迁移：历史置顶（pinned=1，旧语义=全站置顶）升为 2。
+// 新语义下 1=板块置顶、2=全站置顶，若不迁移，存量全站置顶会被降级为板块置顶。
+// 用 site_settings 内部键做幂等标记，避免每次启动把新建的板块置顶（=1）误升为全站。
+func preparePostPinLevels(db *gorm.DB) error {
+	const markerKey = "internal_pin_levels_migrated"
+	var marker int64
+	if err := db.Model(&SiteSetting{}).Where("key = ?", markerKey).Count(&marker).Error; err != nil {
+		return err
+	}
+	if marker > 0 {
+		return nil
+	}
+	if err := db.Exec(`UPDATE posts SET pinned = 2 WHERE pinned = 1`).Error; err != nil {
+		return err
+	}
+	return db.Exec(`INSERT INTO site_settings (key, value) VALUES (?, ?)
+		ON CONFLICT (key) DO UPDATE SET value = EXCLUDED.value`, markerKey, "1").Error
+}
+
 // prepareSiteSettingValueText 将 site_settings.value 从 varchar(255) 扩为 text（幂等）
 func prepareSiteSettingValueText(db *gorm.DB) error {
 	var tableCount int64
--- a/backend/model/models.go
+++ b/backend/model/models.go
@@ -11,7 +11,7 @@ type Role string

 const (
 	RoleUser       Role = "user"        // 普通用户：发帖/评论需审核
-	RoleBoardAdmin Role = "board_admin" // 板块管理员：仅管理被授权板块的帖子与评论
+	RoleBoardAdmin Role = "board_admin" // 板块管理员：管理被授权板块的帖子、评论与板块内置顶
 	RoleAdmin      Role = "admin"       // 管理员：公告 + 全站帖子/评论审核
 	RoleSuperAdmin Role = "super_admin" // 超级管理员：全站后台（用户/公告/设置/内容），但不可操作站长
 	RoleOwner      Role = "owner"       // 站长：最高权限，全站唯一，任何人（含自己）不可改角色/封禁
@@ -121,7 +121,7 @@ type User struct {
 	Signature         string         `gorm:"size:255;default:''" json:"signature"` // 个性签名
 	Role              Role           `gorm:"size:16;default:user" json:"role"`
 	Banned            bool           `gorm:"default:false" json:"banned"`
-	CanManageMessages bool           `gorm:"not null;default:false" json:"can_manage_messages"` // 站点消息管理（仅站长可授；站长/超管固有全站监管）
+	CanManageMessages bool           `gorm:"not null;default:false" json:"can_manage_messages"` // 站点消息管理（仅站长可授；超管亦需授予，站长固有全站监管）
 	PermOverrides     string         `gorm:"size:256;default:''" json:"-"`                      // 账号级渠道权限覆盖 JSON；仅后台权限服务读取，序列化跳过
 	Points            int            `gorm:"not null;default:0" json:"points"`                  // 可用积分余额
 	TotalPoints       int            `gorm:"not null;default:0" json:"total_points"`            // 累计获得积分（经验值，定级依据；消费不减）
@@ -207,6 +207,13 @@ type ImportRecord struct {
 	CreatedAt time.Time `json:"created_at"`
 }

+// 帖子置顶级别：同一 pinned 字段分级，数值越大范围越大
+const (
+	PinNone   = 0 // 不置顶
+	PinBoard  = 1 // 板块置顶：仅所属板块列表靠前（板块管理员可操作）
+	PinGlobal = 2 // 全站置顶：首页与所有列表靠前（管理员及以上可操作）
+)
+
 // Post 帖子
 type Post struct {
 	ID            uint   `gorm:"primaryKey" json:"id"`
@@ -219,7 +226,8 @@ type Post struct {
 	ContentAccess string `gorm:"size:16;default:public;index" json:"content_access"` // public|login|reply|points|password|mixed（由正文隐藏块派生）
 	AccessPoints  int    `gorm:"not null;default:0" json:"access_points"`            // 积分隐藏块价格之和
 	TypeMeta      string `gorm:"type:text;default:''" json:"type_meta"`              // 类型扩展 JSON（投票/悬赏/抽奖壳）
-	Pinned        int    `gorm:"default:0" json:"pinned"`
+	Pinned        int    `gorm:"default:0" json:"pinned"` // 置顶级别：0=无 1=板块 2=全站
+	PinOrder      int    `gorm:"default:0" json:"pin_order"` // 同层级置顶帖的显示顺序：越小越靠前
 	Recommended   bool   `gorm:"default:false;index" json:"recommended"`
 	Locked        bool   `gorm:"default:false;index" json:"locked"` // 管理员手动锁定：普通用户不可编辑/回复（staff 豁免）
 	Status        string `gorm:"size:16;default:published;index" json:"status"`
--- a/backend/router/router.go
+++ b/backend/router/router.go
@@ -65,8 +65,8 @@ func Setup(cfg *config.Config) (*gin.Engine, error) {
 	r.Use(gin.Recovery())
 	r.Use(gin.Logger())

-	// 全局安全响应头
-	r.Use(middleware.SecurityHeaders())
+	// 全局安全响应头（HSTS 仅 HTTPS origin 下发）
+	r.Use(middleware.SecurityHeaders(cfg.IsSecureOrigin()))

 	// CORS：开发放行 localhost:3000；生产用 SITE_URL / CORS_ORIGINS（同源反代时浏览器不走跨域）
 	r.Use(cors.New(cors.Config{
@@ -159,7 +159,7 @@ func Setup(cfg *config.Config) (*gin.Engine, error) {
 		Chat:           chatSvc,
 		Visit:          visitSvc,
 		Analytics:      analyticsSvc,
-		HidePwd:        service.NewHidePasswordCookie(cfg.JWTSecret, !cfg.DevMode),
+		HidePwd:        service.NewHidePasswordCookie(cfg.JWTSecret, cfg.IsSecureOrigin()),
 		Ads:            adSvc,
 		Sidebar:        service.NewSidebarService(model.DB),
 		FriendLink:     service.NewFriendLinkService(model.DB),
@@ -203,7 +203,7 @@ func Setup(cfg *config.Config) (*gin.Engine, error) {
 	r.GET("/api/ws", h.RealtimeWS)

 	// 公开 API（可选登录）；EnsureCSRF 让游客也能拿到双提交 token（密码解锁等）
-	pubAPI := r.Group("/api", authMW.OptionalAuth(), middleware.EnsureCSRFCookie(!cfg.DevMode))
+	pubAPI := r.Group("/api", authMW.OptionalAuth(), middleware.EnsureCSRFCookie(cfg.IsSecureOrigin()))
 	{
 		pubAPI.GET("/me", h.Me)
 		pubAPI.GET("/boards", h.Boards)
@@ -380,6 +380,10 @@ func Setup(cfg *config.Config) (*gin.Engine, error) {
 		staffAPI.PUT("/content/comments/:id/restore", h.AdminRestoreComment)
 		staffAPI.DELETE("/content/comments/:id/purge", h.AdminPurgeComment)

+		// 置顶帖顺序配置（板块置顶：板管限授权板块；全站置顶：管理员及以上）
+		staffAPI.GET("/pinned-posts", h.AdminListPinnedPosts)
+		staffAPI.PUT("/pinned-posts/order", h.AdminSavePinOrder)
+
 		// 积分与类型帖概览（管理员及以上）
 		staffAPI.GET("/economy", authMW.RequirePerm(service.PermAnnouncements), h.AdminPointsStats)

--- a/backend/service/actor.go
+++ b/backend/service/actor.go
@@ -18,7 +18,7 @@ const (
 	PermAds           = "ads"           // 广告与赞助管理（管理员及以上；可账号级授予）
 	PermSettings      = "settings"      // 站点外观设置（超管/站长）
 	PermModeration    = "moderation"    // 内容审核（任意管理角色，板块范围受限）
-	PermMessages      = "messages"      // 后台消息管理（站长/超管/站点消息 flag；群管另有业务层放行）
+	PermMessages      = "messages"      // 后台消息管理（站长固有；超管及其他角色需站点消息 flag；群管另有业务层放行）
 	PermBoards        = "boards"        // 板块管理（仅站长）
 )

@@ -105,7 +105,7 @@ func EffectivePerms(role model.Role, permOverridesRaw string, canManageMessages
 	for _, p := range ParsePermOverrides(permOverridesRaw) {
 		set[p] = true
 	}
-	if role == model.RoleOwner || role == model.RoleSuperAdmin || canManageMessages {
+	if role == model.RoleOwner || canManageMessages {
 		set[PermMessages] = true
 	}
 	out := make([]string, 0, len(set))
@@ -123,7 +123,7 @@ type Actor struct {
 	Username          string
 	Role              model.Role
 	BoardIDs          []uint   // 板块管理员被授权的板块；其他角色为空
-	CanManageMessages bool     // 站点级消息管理 flag（站长授予）；站长/超管不必依赖此字段
+	CanManageMessages bool     // 站点级消息管理 flag（仅站长可授，超管亦需此授予）；站长固有
 	ExtraPerms        []string // 账号级授予的渠道权限（角色固有之外的增量）
 }

@@ -151,15 +151,22 @@ func (a *Actor) HasPerm(p string) bool {
 	return false
 }

-// HasSiteMessagePerm 站点级消息管理：站长/超管固有，或被授予 CanManageMessages
+// HasSiteMessagePerm 站点级消息管理：站长固有；超管及其他角色需被授予 CanManageMessages
 func (a *Actor) HasSiteMessagePerm() bool {
 	if a == nil {
 		return false
 	}
-	if a.Role == model.RoleOwner || a.Role == model.RoleSuperAdmin {
-		return true
+	return a.Role == model.RoleOwner || a.CanManageMessages
+}
+
+// CanOverseeChat 全站消息监管（可见全部群含私聊、撤回任意消息、旁路订阅任意房间）：
+// 站长固有；超管需先被授予站点消息管理
+func (a *Actor) CanOverseeChat() bool {
+	if a == nil {
+		return false
 	}
-	return a.CanManageMessages
+	return a.Role == model.RoleOwner ||
+		(a.Role == model.RoleSuperAdmin && a.CanManageMessages)
 }

 // CanPurgeContent 彻底删除帖/评：仅站长
--- a/backend/service/admin_content.go
+++ b/backend/service/admin_content.go
@@ -13,6 +13,7 @@ import (
 var (
 	ErrContentNotDeleted = errors.New("仅已删除内容可彻底清除")
 	ErrContentNotFound   = errors.New("内容不存在")
+	ErrPinOrderForbidden = errors.New("无权配置该层级置顶顺序")
 )

 func (s *ModerationService) authorRole(userID uint) (model.Role, error) {
@@ -511,3 +512,105 @@ func (s *ModerationService) PurgeComment(actor *Actor, id uint) error {
 		return tx.Unscoped().Delete(&model.Comment{}, id).Error
 	})
 }
+
+// ===== 置顶顺序配置（后台可拖拽排序，同层级 pin_order 越小越靠前） =====
+
+// PinnedPostItem 置顶帖排序列表项
+type PinnedPostItem struct {
+	ID        uint      `json:"id"`
+	Title     string    `json:"title"`
+	Pinned    int       `json:"pinned"`
+	PinOrder  int       `json:"pin_order"`
+	BoardID   uint      `json:"board_id"`
+	BoardName string    `json:"board_name"`
+	CreatedAt time.Time `json:"created_at"`
+}
+
+// assertPinScopePermission 校验 actor 对指定置顶层级/板块的排序权限：
+// 全局置顶仅管理员及以上；板块置顶允许管理员或管辖该板块的板管（board_id 必填）。
+func (s *ModerationService) assertPinScopePermission(actor *Actor, level int, boardID uint) error {
+	if actor == nil {
+		return ErrPinOrderForbidden
+	}
+	if model.RoleLevel(actor.Role) >= model.RoleLevel(model.RoleAdmin) {
+		return nil
+	}
+	if level == model.PinGlobal {
+		return ErrPinOrderForbidden
+	}
+	if level == model.PinBoard {
+		if boardID == 0 {
+			return ErrPinOrderForbidden // 板管必须指定具体板块
+		}
+		if actor.CanModerateBoard(boardID) {
+			return nil
+		}
+	}
+	return ErrPinOrderForbidden
+}
+
+// ListPinnedPosts 列出指定层级的置顶帖（当前顺序：pin_order 升序，未配置按发帖时间倒序兜底）。
+// level=2 全站置顶；level=1 需带 board_id（管理员可省=全部板块的板块置顶）。
+func (s *ModerationService) ListPinnedPosts(actor *Actor, level int, boardID uint) ([]PinnedPostItem, error) {
+	if err := s.assertPinScopePermission(actor, level, boardID); err != nil {
+		return nil, err
+	}
+	q := s.db.Model(&model.Post{}).
+		Where("pinned = ? AND deleted_at IS NULL AND status = ?", level, model.ContentStatusPublished)
+	if boardID > 0 {
+		q = q.Where("board_id = ?", boardID)
+	}
+	var posts []model.Post
+	if err := q.Order("(pin_order = 0), pin_order ASC, created_at DESC").
+		Preload("Board").Find(&posts).Error; err != nil {
+		return nil, err
+	}
+	items := make([]PinnedPostItem, 0, len(posts))
+	for _, p := range posts {
+		items = append(items, PinnedPostItem{
+			ID:        p.ID,
+			Title:     p.Title,
+			Pinned:    p.Pinned,
+			PinOrder:  p.PinOrder,
+			BoardID:   p.BoardID,
+			BoardName: p.Board.Name,
+			CreatedAt: p.CreatedAt,
+		})
+	}
+	return items, nil
+}
+
+// SavePinOrder 按传入 ID 顺序重写 pin_order（从 1 递增）。
+// 安全约束：ids 必须全部属于该层级且在权限范围内，否则整体拒绝，避免半截写入。
+func (s *ModerationService) SavePinOrder(actor *Actor, level int, boardID uint, ids []uint) error {
+	if err := s.assertPinScopePermission(actor, level, boardID); err != nil {
+		return err
+	}
+	if len(ids) == 0 {
+		return nil
+	}
+	if len(ids) > 200 {
+		return errors.New("单次最多排序 200 条")
+	}
+	var count int64
+	q := s.db.Model(&model.Post{}).
+		Where("id IN ? AND pinned = ? AND deleted_at IS NULL", ids, level)
+	if boardID > 0 {
+		q = q.Where("board_id = ?", boardID)
+	}
+	if err := q.Count(&count).Error; err != nil {
+		return err
+	}
+	if count != int64(len(ids)) {
+		return ErrPinOrderForbidden // 含越权/已取消置顶/已删除的 ID
+	}
+	return s.db.Transaction(func(tx *gorm.DB) error {
+		for i, id := range ids {
+			if err := tx.Model(&model.Post{}).Where("id = ?", id).
+				UpdateColumn("pin_order", i+1).Error; err != nil {
+				return err
+			}
+		}
+		return nil
+	})
+}
--- a/backend/service/admin_user.go
+++ b/backend/service/admin_user.go
@@ -470,7 +470,7 @@ func (s *AdminUserService) SetPermOverrides(operator *Actor, targetID uint, perm
 	return s.getItem(s.db, targetID)
 }

-// SetCanManageMessages 站长授予/撤销站点消息管理权限（不可操作站长账号与自己）
+// SetCanManageMessages 站长授予/撤销站点消息管理权限（超管亦需授予；不可操作站长账号与自己）
 func (s *AdminUserService) SetCanManageMessages(operator *Actor, targetID uint, enabled bool) (*AdminUserItem, error) {
 	if operator == nil || operator.Role != model.RoleOwner {
 		return nil, ErrOwnerOnly
@@ -486,10 +486,6 @@ func (s *AdminUserService) SetCanManageMessages(operator *Actor, targetID uint,
 		if u.Role == model.RoleOwner {
 			return ErrProtectedOwner
 		}
-		// 超管固有全站监管，flag 无意义；强制保持 false 以免误导
-		if u.Role == model.RoleSuperAdmin {
-			enabled = false
-		}
 		if u.CanManageMessages == enabled {
 			return nil
 		}
--- a/backend/service/chat.go
+++ b/backend/service/chat.go
@@ -42,11 +42,6 @@ var (
 	ErrChatAdminAccess     = errors.New("无权管理消息")
 )

-// CanOverseeChat 站长/超管可旁路查看全部群（含私聊）并撤回任意消息
-func CanOverseeChat(role model.Role) bool {
-	return role == model.RoleOwner || role == model.RoleSuperAdmin
-}
-
 const (
 	chatNameMinRune = 2
 	chatNameMaxRune = 32
@@ -929,7 +924,7 @@ func (s *ChatService) isChatRoomModerator(userID, roomID uint) bool {
 	return m.Role == model.ChatRoleOwner || m.Role == model.ChatRoleAdmin
 }

-// hasSiteGroupMessagePerm 站点消息管理 flag（不含超管/站长，调用方通常已判 oversee）
+// hasSiteGroupMessagePerm 站点消息管理 flag（不含站长，超管经 oversee 已放行；调用方通常已判 oversee）
 func (s *ChatService) hasSiteGroupMessagePerm(userID uint) bool {
 	var u model.User
 	if err := s.db.Select("can_manage_messages").First(&u, userID).Error; err != nil {
@@ -1219,7 +1214,7 @@ type AdminChatMessageItem struct {
 }

 // AdminListMessages 按房间类型分页；scope 限制可见房间；非全站监管脱敏已撤回正文。
-// actor 为站长/超管：全站；HasSiteMessagePerm：全部群聊（无私聊）；否则仅群管房间。
+// actor 为站长或已授权超管：全站；HasSiteMessagePerm：全部群聊（无私聊）；否则仅群管房间。
 func (s *ChatService) AdminListMessages(actor *Actor, page int, keyword, roomType string) ([]AdminChatMessageItem, int64, error) {
 	if actor == nil || !s.CanAccessAdminMessages(actor) {
 		return nil, 0, ErrChatAdminAccess
@@ -1227,7 +1222,7 @@ func (s *ChatService) AdminListMessages(actor *Actor, page int, keyword, roomTyp
 	if page < 1 {
 		page = 1
 	}
-	fullOversee := CanOverseeChat(actor.Role)
+	fullOversee := actor.CanOverseeChat()
 	siteGroup := actor.HasSiteMessagePerm() && !fullOversee
 	if roomType != model.ChatRoomTypeGroup && roomType != model.ChatRoomTypeDirect {
 		return nil, 0, errors.New("房间类型无效")
--- a/backend/service/legacyimport.go
+++ b/backend/service/legacyimport.go
@@ -226,6 +226,14 @@ type legacyPostRow struct {

 func (legacyPostRow) TableName() string { return "posts" }

+// legacyPinLevel 旧库 pinned（0/1，非零=全站置顶）映射到新置顶分级：板块置顶为本站新能力，旧数据无此语义
+func legacyPinLevel(v int) int {
+	if v > 0 {
+		return model.PinGlobal
+	}
+	return model.PinNone
+}
+
 type legacyCommentRow struct {
 	ID        uint           `gorm:"primaryKey"`
 	PostID    uint           `gorm:"column:post_id"`
@@ -757,7 +765,7 @@ func (s *LegacyImportService) importPosts(oldDB *gorm.DB, boardMap map[uint]uint
 			Content:     content,
 			Tags:        p.Tags,
 			PostType:    model.NormalizePostType(p.PostType), // question→question，normal→discussion
-			Pinned:      p.Pinned,
+			Pinned:      legacyPinLevel(p.Pinned),
 			Recommended: p.Featured,
 			Status:      model.ContentStatusPublished,
 			LikeCount:   p.LikeCount,
--- a/backend/service/operations.go
+++ b/backend/service/operations.go
@@ -368,7 +368,7 @@ func (o *Operations) validate(db *gorm.DB, name string, v any) error {
 				return e
 			}
 			origin, originErr := url.Parse(o.cfg.SiteURL)
-			if originErr != nil || origin.Host == "" || origin.User != nil || origin.RawQuery != "" || origin.Fragment != "" || strings.Trim(origin.Path, "/") != "" || (origin.Scheme != "https" && !(o.cfg.DevMode && origin.Scheme == "http")) {
+			if originErr != nil || origin.Host == "" || origin.User != nil || origin.RawQuery != "" || origin.Fragment != "" || strings.Trim(origin.Path, "/") != "" || (origin.Scheme != "https" && o.cfg.IsSecureOrigin()) {
 				return bad("verify_email", "部署 SITE_URL 后才能开启账号邮件")
 			}
 		}
@@ -430,8 +430,8 @@ func (o *Operations) validate(db *gorm.DB, name string, v any) error {
 		}
 		if c.Backend == "s3" {
 			u, e := url.Parse(c.Endpoint)
-			if e != nil || u.Host == "" || u.User != nil || u.RawQuery != "" || u.Fragment != "" || strings.Trim(u.Path, "/") != "" || (u.Scheme != "https" && !(o.cfg.DevMode && u.Scheme == "http")) {
-				return bad("endpoint", "须为 HTTPS origin（开发可 HTTP）")
+			if e != nil || u.Host == "" || u.User != nil || u.RawQuery != "" || u.Fragment != "" || strings.Trim(u.Path, "/") != "" || (u.Scheme != "https" && o.cfg.IsSecureOrigin()) {
+				return bad("endpoint", "须为 HTTPS origin（HTTP origin 部署可放宽）")
 			}
 			if !regexp.MustCompile(`^[a-z0-9][a-z0-9.-]{1,61}[a-z0-9]$`).MatchString(c.Bucket) || strings.Contains(c.Bucket, "..") {
 				return bad("bucket", "桶名称无效")
--- a/backend/service/post.go
+++ b/backend/service/post.go
@@ -19,6 +19,8 @@ var (
 	ErrPostInvalidType = errors.New("无效的删除类型")
 	ErrPostLocked      = errors.New("帖子已被锁定，无法编辑")
 	ErrPostEditLocked  = errors.New("帖子已超过可编辑时限，无法编辑")
+	ErrPinGlobalOnly   = errors.New("全站置顶仅管理员可操作")
+	ErrPinInvalidLevel = errors.New("无效的置顶级别")
 )

 // editLocked 内容是否已被自动编辑锁定；管理团队豁免；hours<=0 表示不启用
@@ -247,18 +249,25 @@ func (s *PostService) List(q PostListQuery) ([]PostListItem, int64, error) {

 	var posts []model.Post
 	offset := (q.Page - 1) * q.Size
+	// 置顶排序前缀按范围区分：板块视图里全站置顶(2)在板块置顶(1)之上；
+	// 全站信息流只让全站置顶(2)浮顶，板块置顶(1)不影响首页与跨板列表。
+	// 同层级置顶帖之间按后台配置的 pin_order 升序（pin_order=0 视为未配置，排在已配置的后面，再按活跃序兜底）。
+	pinFirst := "(pinned >= 2) DESC, (pin_order = 0), pin_order ASC"
+	if q.BoardID > 0 {
+		pinFirst = "pinned DESC, (pin_order = 0), pin_order ASC"
+	}
 	// latest：按"最后活跃时间"排序——新帖与新评论都会浮到顶部。
 	// 取发帖时间与该帖最新一条已发布评论时间的较大值，相关子查询走 comments.post_id 索引
-	order := `pinned DESC, GREATEST(created_at, COALESCE((
+	order := pinFirst + `, GREATEST(created_at, COALESCE((
 		SELECT MAX(c.created_at) FROM comments c
 		WHERE c.post_id = posts.id AND c.status = 'published' AND c.deleted_at IS NULL
 	), created_at)) DESC`
 	if q.Sort == "recommended" {
-		order = "pinned DESC, (like_count + comment_count * 2) DESC, created_at DESC"
+		order = pinFirst + ", (like_count + comment_count * 2) DESC, created_at DESC"
 	}
 	// new：纯按发帖时间（新帖子）
 	if q.Sort == "new" {
-		order = "pinned DESC, created_at DESC"
+		order = pinFirst + ", created_at DESC"
 	}
 	if err := query.Order(order).Offset(offset).Limit(q.Size).
 		Preload("Board").Preload("User").Preload("User.Badges.Badge").Find(&posts).Error; err != nil {
@@ -311,7 +320,7 @@ func (s *PostService) ListByUser(userID, viewerID uint, actor *Actor, page, size
 	}
 	var posts []model.Post
 	offset := (page - 1) * size
-	order := "pinned DESC, created_at DESC"
+	order := "(pinned >= 2) DESC, (pin_order = 0), pin_order ASC, created_at DESC"
 	if sort == "hot" {
 		order = "like_count + comment_count DESC, view_count DESC, created_at DESC"
 	}
@@ -349,24 +358,36 @@ func (s *PostService) CountByUser(userID uint) (int64, error) {
 	return total, err
 }

-// TogglePin 切换置顶状态（仅管理员可操作，由 handler 校验权限）
-func (s *PostService) TogglePin(id uint) (int, error) {
+// TogglePin 设置置顶级别：level 0=取消置顶，1=板块置顶，2=全站置顶。
+// 板块管理员只能操作自己授权板块且只能设置/取消板块置顶；管理员可设置任意级别。
+func (s *PostService) TogglePin(id uint, actor *Actor, level int) (int, error) {
+	if level < model.PinNone || level > model.PinGlobal {
+		return 0, ErrPinInvalidLevel
+	}
 	var post model.Post
-	if err := s.db.First(&post, id).Error; err != nil {
+	if err := s.db.Select("id", "board_id", "pinned").First(&post, id).Error; err != nil {
 		return 0, err
 	}
-	var newPinned int
-	if post.Pinned > 0 {
-		newPinned = 0
-	} else {
-		newPinned = 1
+	isGlobalAdmin := actor != nil && model.RoleLevel(actor.Role) >= model.RoleLevel(model.RoleAdmin)
+	isBoardModerator := actor != nil && actor.CanModerateBoard(post.BoardID)
+
+	// 权限校验
+	if level == model.PinGlobal && !isGlobalAdmin {
+		return 0, ErrPinGlobalOnly
 	}
+	if level > model.PinNone && !isGlobalAdmin && !isBoardModerator {
+		return 0, ErrPostForbidden
+	}
+	// 板块管理员不能取消全局置顶（只能取消自己设置的板块置顶）
+	if !isGlobalAdmin && level == model.PinNone && post.Pinned == model.PinGlobal {
+		return 0, ErrPinGlobalOnly
+	}
+
 	// UpdateColumn：置顶非内容编辑，不刷新 updated_at
-	result := s.db.Model(&post).UpdateColumn("pinned", newPinned)
-	if result.Error != nil {
-		return 0, result.Error
+	if err := s.db.Model(&post).UpdateColumn("pinned", level).Error; err != nil {
+		return 0, err
 	}
-	return newPinned, nil
+	return level, nil
 }

 // ToggleLock 切换帖子手动锁定状态（仅管理员可操作，由 handler 校验权限）。
--- a/backend/service/setting.go
+++ b/backend/service/setting.go
@@ -124,15 +124,18 @@ const (
 	DefaultUrlStyle = "default"

 	// MaxMobileTabs 底栏配置元素上限（与白名单等长）
-	MaxMobileTabs = 5
+	MaxMobileTabs = 6
 )

-// MobileTabKeys 移动端底栏允许的 tab key 白名单（同时是默认顺序，与前端 lib/mobileTabs.ts 保持一致）
-var MobileTabKeys = []string{"home", "library", "compose", "messages", "me"}
+// MobileTabKeys 移动端底栏允许的 tab key 白名单（同时是管理面板排序基准，与前端 lib/mobileTabs.ts 保持一致）
+var MobileTabKeys = []string{"home", "library", "snippets", "compose", "messages", "me"}

-// DefaultMobileTabs 底栏默认全量配置
+// DefaultMobileTabKeys 底栏缺省启用集合（白名单子集：snippets 默认关闭，需管理员手动开启）
+var DefaultMobileTabKeys = []string{"home", "library", "compose", "messages", "me"}
+
+// DefaultMobileTabs 底栏默认启用配置
 func DefaultMobileTabs() []string {
-	return append([]string(nil), MobileTabKeys...)
+	return append([]string(nil), DefaultMobileTabKeys...)
 }

 // DefaultAttachmentExts 论坛向默认允许扩展名（含安装包/脚本/网页）
@@ -645,7 +648,7 @@ func (s *SettingService) SetMobileTabs(tabs []string) error {
 	if !ok || len(out) == 0 {
 		return ErrInvalidSiteSetting
 	}
-	if mobileTabsEqual(out, MobileTabKeys) {
+	if mobileTabsEqual(out, DefaultMobileTabKeys) {
 		return s.deleteKey(SettingKeyMobileTabs)
 	}
 	b, err := json.Marshal(out)
--- a/docs/about.md
+++ b/docs/about.md
@@ -11,7 +11,7 @@
 - **Markdown 渲染**：完整支持 Markdown 语法，包含代码高亮、引用、列表等，技术内容排版美观。
 - **楼层化评论**：主评论占楼层、子评论不占楼层，最多 10 层嵌套，讨论层次分明。
 - **点赞互动**：帖子点赞带防重复机制，让优质内容被看见。
- **置顶与推荐**：管理员可对帖子进行置顶、推荐，引导社区焦点。
+- **置顶与推荐**：管理员可对帖子进行全站置顶、推荐，引导社区焦点；板块管理员可在被授权板块内单独置顶帖子。

 ### 🔔 实时通知
 - 评论、回复、点赞等互动实时推送，未读红点随页面首屏直出。
--- a/frontend/app/admin/messages/MessagesAdmin.tsx
+++ b/frontend/app/admin/messages/MessagesAdmin.tsx
@@ -250,7 +250,7 @@ function useMessageColumn(roomType: MsgKind) {

 /** 群聊（含大厅）| 私聊 双栏监管 */
 export default function MessagesAdmin({ me }: { me: User }) {
-  const canOversee = canOverseeChat(me.role);
+  const canOversee = canOverseeChat(me);
  const [mobileKind, setMobileKind] = useState<MsgKind>("group");
  const group = useMessageColumn("group");
  const direct = useMessageColumn("direct");
--- a/frontend/app/admin/messages/page.tsx
+++ b/frontend/app/admin/messages/page.tsx
@@ -15,7 +15,7 @@ export default async function AdminMessagesPage() {
  const cookie = authCookieHeader(await cookies());
  const me = await getMeCached(cookie || undefined);
  if (!me.user || !canAccessAdminMessages(me.user)) {
-    return <Forbidden text="消息管理需站长授予权限，或被任命为群管理员。" />;
+    return <Forbidden text="消息管理需站长授予权限（超管亦需授权），或被任命为群管理员。" />;
  }

  return <MessagesAdmin me={me.user} />;
--- a/frontend/app/admin/pinned/PinnedAdmin.tsx
+++ b/frontend/app/admin/pinned/PinnedAdmin.tsx
@@ -0,0 +1,553 @@
+"use client";
+
+import {
+  useCallback,
+  useEffect,
+  useRef,
+  useState,
+  type DragEvent,
+  type KeyboardEvent as ReactKeyboardEvent,
+} from "react";
+import {
+  Check,
+  ChevronDown,
+  ChevronUp,
+  FolderOpen,
+  Globe,
+  GripVertical,
+  Loader2,
+  Pin,
+} from "lucide-react";
+import {
+  apiAdminPinnedPosts,
+  apiAdminSavePinOrder,
+  type AdminPinnedPost,
+} from "@/lib/api";
+import { formatRelative } from "@/lib/format";
+import { toast } from "@/lib/toast";
+import {
+  AdminEmpty,
+  AdminIconButton,
+  AdminPageHeader,
+  AdminSegmented,
+} from "@/components/admin";
+
+interface BoardOpt {
+  id: number;
+  name: string;
+}
+
+interface PinnedAdminProps {
+  boards: BoardOpt[];
+  /** 管理员及以上：可排全站置顶 */
+  canGlobal: boolean;
+}
+
+type Level = 1 | 2;
+
+export default function PinnedAdmin({ boards, canGlobal }: PinnedAdminProps) {
+  const [level, setLevel] = useState<Level>(canGlobal ? 2 : 1);
+  const [boardId, setBoardId] = useState<number>(boards[0]?.id ?? 0);
+  const [posts, setPosts] = useState<AdminPinnedPost[]>([]);
+  const [loading, setLoading] = useState(true);
+  const [saving, setSaving] = useState(false);
+  const [error, setError] = useState("");
+  /** 拖拽排序：被拖行下标 + 插入位置（0..N，N 表示末尾） */
+  const [dragIndex, setDragIndex] = useState<number | null>(null);
+  const [dropIndex, setDropIndex] = useState<number | null>(null);
+
+  const load = useCallback(async (lv: Level, bid: number) => {
+    setLoading(true);
+    setError("");
+    try {
+      const r = await apiAdminPinnedPosts(lv, lv === 1 ? bid : undefined);
+      setPosts(r.posts ?? []);
+    } catch (e) {
+      setPosts([]);
+      setError(e instanceof Error ? e.message : "获取置顶列表失败");
+    } finally {
+      setLoading(false);
+    }
+  }, []);
+
+  useEffect(() => {
+    void load(level, boardId);
+  }, [level, boardId, load]);
+
+  const switchLevel = (lv: Level) => {
+    if (lv === level) return;
+    setLevel(lv);
+    setPosts([]);
+    setError("");
+  };
+
+  /** 统一保存：乐观更新新顺序，失败回滚并提示 */
+  const saveOrder = useCallback(
+    async (next: AdminPinnedPost[], prev: AdminPinnedPost[]) => {
+      setPosts(next);
+      setSaving(true);
+      try {
+        await apiAdminSavePinOrder(
+          level,
+          level === 1 ? boardId : 0,
+          next.map((p) => p.id)
+        );
+        toast("置顶顺序已更新", "ok");
+      } catch (e) {
+        setPosts(prev);
+        toast(e instanceof Error ? e.message : "保存顺序失败");
+      } finally {
+        setSaving(false);
+      }
+    },
+    [level, boardId]
+  );
+
+  // 上移/下移按钮与键盘共用
+  const move = (idx: number, dir: -1 | 1) => {
+    const target = idx + dir;
+    if (target < 0 || target >= posts.length || saving) return;
+    const prev = posts;
+    const next = [...posts];
+    const tmp = next[idx];
+    next[idx] = next[target];
+    next[target] = tmp;
+    void saveOrder(next, prev);
+  };
+
+  const resetDrag = () => {
+    setDragIndex(null);
+    setDropIndex(null);
+  };
+
+  const onRowDragOver = (e: DragEvent<HTMLLIElement>, i: number) => {
+    if (dragIndex === null) return;
+    e.preventDefault();
+    e.dataTransfer.dropEffect = "move";
+    // 指针过行中线则插到行后，否则插到行前
+    const rect = e.currentTarget.getBoundingClientRect();
+    const after = e.clientY > rect.top + rect.height / 2;
+    setDropIndex(i + (after ? 1 : 0));
+  };
+
+  const onRowDrop = (e: DragEvent<HTMLLIElement>) => {
+    e.preventDefault();
+    if (dragIndex === null || dropIndex === null || saving) {
+      resetDrag();
+      return;
+    }
+    // 落在原位置前后：无变化
+    if (dropIndex === dragIndex || dropIndex === dragIndex + 1) {
+      resetDrag();
+      return;
+    }
+    const prev = posts;
+    const next = [...posts];
+    const [moved] = next.splice(dragIndex, 1);
+    next.splice(dropIndex > dragIndex ? dropIndex - 1 : dropIndex, 0, moved);
+    resetDrag();
+    void saveOrder(next, prev);
+  };
+
+  /** 插入指示线：仅当落点确实改变位置时显示 */
+  const showLineAt = (pos: number) =>
+    dragIndex !== null && dropIndex === pos && pos !== dragIndex && pos !== dragIndex + 1;
+
+  const segOptions = [
+    ...(canGlobal
+      ? [{ key: "2", label: "全站置顶", icon: <Globe size={13} aria-hidden /> }]
+      : []),
+    { key: "1", label: "板块置顶", icon: <FolderOpen size={13} aria-hidden /> },
+  ];
+
+  return (
+    <div>
+      <AdminPageHeader
+        icon={Pin}
+        title="置顶管理"
+        description="拖拽手柄或上下箭头调整置顶帖顺序，改动自动保存，越靠前越先展示。板块管理员仅可排序授权板块的板块置顶。"
+      />
+
+      {error && (
+        <div
+          className="mb-3 px-3 py-2 rounded-[var(--r-sm)] text-[12.5px]"
+          style={{ background: "var(--danger-soft)", color: "var(--danger)" }}
+        >
+          {error}
+        </div>
+      )}
+
+      {/* 层级切换 + 板块选择 */}
+      <div className="mb-4 flex items-center gap-3 flex-wrap">
+        <AdminSegmented
+          options={segOptions}
+          value={String(level)}
+          onChange={(k) => switchLevel(Number(k) as Level)}
+          ariaLabel="置顶层级"
+        />
+        {level === 1 && (
+          <BoardSelect
+            boards={boards}
+            value={boardId}
+            onChange={setBoardId}
+            disabled={loading || saving}
+          />
+        )}
+      </div>
+
+      <div className="panel overflow-hidden">
+        {loading ? (
+          <PinListSkeleton />
+        ) : posts.length === 0 ? (
+          <AdminEmpty
+            icon={<Pin size={20} />}
+            title={level === 2 ? "暂无全站置顶帖" : "该板块暂无置顶帖"}
+            description="在帖子页的「管理」菜单中可将帖子设为置顶。"
+          />
+        ) : (
+          <>
+            {/* 列表状态条：数量 + 保存状态/操作提示 */}
+            <div
+              className="flex items-center justify-between gap-3 px-4 py-2.5"
+              style={{ borderBottom: "1px solid var(--line)" }}
+            >
+              <span
+                className="text-[12.5px] font-semibold inline-flex items-center gap-1"
+                style={{ color: "var(--ink-2)" }}
+              >
+                共
+                <b className="tabular-nums" style={{ color: "var(--accent)" }}>
+                  {posts.length}
+                </b>
+                篇置顶
+              </span>
+              <span className="meta text-[12px] inline-flex items-center gap-1.5">
+                {saving ? (
+                  <>
+                    <Loader2 size={12} className="animate-spin" aria-hidden />
+                    保存中…
+                  </>
+                ) : (
+                  "拖拽手柄或上下按钮调整，自动保存"
+                )}
+              </span>
+            </div>
+
+            <ul
+              onDragLeave={(e) => {
+                // 仅当指针真正离开列表时清除指示线，避免行间移动时闪烁
+                if (!e.currentTarget.contains(e.relatedTarget as Node | null)) {
+                  setDropIndex(null);
+                }
+              }}
+            >
+              {posts.map((p, i) => (
+                <li
+                  key={p.id}
+                  className={`pin-row relative flex items-center gap-3 px-4 py-3${
+                    dragIndex === i ? " is-dragging" : ""
+                  }`}
+                  style={{ borderTop: i === 0 ? "none" : "1px solid var(--line)" }}
+                  onDragOver={(e) => onRowDragOver(e, i)}
+                  onDrop={onRowDrop}
+                >
+                  {/* 拖拽插入位置指示线 */}
+                  {showLineAt(i) && (
+                    <span
+                      className="absolute left-3 right-3 -top-px h-[2px] rounded-full pointer-events-none"
+                      style={{ background: "var(--accent)" }}
+                      aria-hidden
+                    />
+                  )}
+                  {i === posts.length - 1 && showLineAt(posts.length) && (
+                    <span
+                      className="absolute left-3 right-3 -bottom-px h-[2px] rounded-full pointer-events-none"
+                      style={{ background: "var(--accent)" }}
+                      aria-hidden
+                    />
+                  )}
+
+                  {/* 拖拽手柄：键盘上下方向键同样可排序 */}
+                  <span
+                    role="button"
+                    tabIndex={0}
+                    aria-label={`拖拽调整「${p.title}」的顺序，也可使用上下方向键`}
+                    className="pin-drag-handle w-5 h-8 -ml-1 inline-flex items-center justify-center rounded-md shrink-0"
+                    draggable={!saving}
+                    onDragStart={(e) => {
+                      e.dataTransfer.effectAllowed = "move";
+                      e.dataTransfer.setData("text/plain", String(i));
+                      setDragIndex(i);
+                    }}
+                    onDragEnd={resetDrag}
+                    onKeyDown={(e) => {
+                      if (e.key === "ArrowUp") {
+                        e.preventDefault();
+                        move(i, -1);
+                      } else if (e.key === "ArrowDown") {
+                        e.preventDefault();
+                        move(i, 1);
+                      }
+                    }}
+                  >
+                    <GripVertical size={14} aria-hidden />
+                  </span>
+
+                  {/* 名次徽章：前三名高亮 */}
+                  <span
+                    className="w-7 h-7 rounded-lg inline-flex items-center justify-center text-[12.5px] font-bold tabular-nums shrink-0"
+                    style={
+                      i < 3
+                        ? { background: "var(--accent-soft)", color: "var(--accent)" }
+                        : { background: "var(--panel-2)", color: "var(--ink-3)" }
+                    }
+                  >
+                    {i + 1}
+                  </span>
+
+                  <div className="min-w-0 flex-1">
+                    <a
+                      href={`/post/${p.id}`}
+                      target="_blank"
+                      rel="noreferrer"
+                      className="text-[13.5px] font-semibold truncate block hover:underline"
+                      style={{ color: "var(--ink)" }}
+                    >
+                      {p.title}
+                    </a>
+                    <p className="meta text-[12px] mt-0.5 flex items-center gap-1.5 truncate">
+                      {level === 2 && (
+                        <span
+                          className="inline-flex items-center gap-1 px-1.5 py-px rounded-full shrink-0"
+                          style={{ background: "var(--panel-2)", color: "var(--ink-3)" }}
+                        >
+                          <FolderOpen size={10} aria-hidden />
+                          {p.board_name}
+                        </span>
+                      )}
+                      <span className="shrink-0">{formatRelative(p.created_at)}</span>
+                    </p>
+                  </div>
+
+                  <div className="flex items-center gap-1 shrink-0">
+                    <AdminIconButton
+                      ariaLabel={`上移「${p.title}」`}
+                      tip="上移"
+                      disabled={i === 0 || saving}
+                      onClick={() => move(i, -1)}
+                    >
+                      <ChevronUp size={15} />
+                    </AdminIconButton>
+                    <AdminIconButton
+                      ariaLabel={`下移「${p.title}」`}
+                      tip="下移"
+                      disabled={i === posts.length - 1 || saving}
+                      onClick={() => move(i, 1)}
+                    >
+                      <ChevronDown size={15} />
+                    </AdminIconButton>
+                  </div>
+                </li>
+              ))}
+            </ul>
+          </>
+        )}
+      </div>
+    </div>
+  );
+}
+
+/** 板块自定义下拉：浮层 + 键盘导航 + 滚动列表，替代原生 select */
+function BoardSelect({
+  boards,
+  value,
+  onChange,
+  disabled,
+}: {
+  boards: BoardOpt[];
+  value: number;
+  onChange: (id: number) => void;
+  disabled?: boolean;
+}) {
+  const [open, setOpen] = useState(false);
+  /** 键盘/悬停高亮下标 */
+  const [hi, setHi] = useState(0);
+  const ref = useRef<HTMLDivElement>(null);
+  const triggerRef = useRef<HTMLButtonElement>(null);
+  const listRef = useRef<HTMLUListElement>(null);
+  const current = boards.find((b) => b.id === value);
+
+  useEffect(() => {
+    if (!open) return;
+    setHi(Math.max(0, boards.findIndex((b) => b.id === value)));
+    const onDown = (e: MouseEvent) => {
+      if (ref.current && !ref.current.contains(e.target as Node)) setOpen(false);
+    };
+    document.addEventListener("mousedown", onDown);
+    return () => document.removeEventListener("mousedown", onDown);
+  }, [open, boards, value]);
+
+  // 高亮项保持在可视区内
+  useEffect(() => {
+    if (!open) return;
+    const el = listRef.current?.children[hi];
+    el?.scrollIntoView({ block: "nearest" });
+  }, [hi, open]);
+
+  const close = (refocus = false) => {
+    setOpen(false);
+    if (refocus) triggerRef.current?.focus();
+  };
+
+  const select = (id: number) => {
+    onChange(id);
+    close(true);
+  };
+
+  const onKeyDown = (e: ReactKeyboardEvent) => {
+    if (!open) {
+      if (["ArrowDown", "ArrowUp", "Enter", " "].includes(e.key)) {
+        e.preventDefault();
+        setOpen(true);
+      }
+      return;
+    }
+    if (e.key === "Escape") {
+      e.preventDefault();
+      close(true);
+    } else if (e.key === "ArrowDown") {
+      e.preventDefault();
+      setHi((v) => Math.min(boards.length - 1, v + 1));
+    } else if (e.key === "ArrowUp") {
+      e.preventDefault();
+      setHi((v) => Math.max(0, v - 1));
+    } else if (e.key === "Enter" || e.key === " ") {
+      e.preventDefault();
+      if (boards[hi]) select(boards[hi].id);
+    } else if (e.key === "Tab") {
+      close();
+    }
+  };
+
+  if (boards.length === 0) {
+    return <span className="meta text-[13px] py-2">无可用板块</span>;
+  }
+
+  return (
+    <div ref={ref} className="relative" onKeyDown={onKeyDown}>
+      <button
+        ref={triggerRef}
+        type="button"
+        aria-haspopup="listbox"
+        aria-expanded={open}
+        aria-label="选择板块"
+        disabled={disabled}
+        onClick={() => setOpen((v) => !v)}
+        className="pin-board-trigger h-9 pl-3 pr-2.5 rounded-lg inline-flex items-center gap-2 text-[13px] font-medium transition-[border-color,box-shadow] disabled:opacity-60 disabled:cursor-not-allowed"
+        style={{
+          minWidth: 176,
+          background: "var(--panel)",
+          border: `1px solid ${open ? "var(--accent)" : "var(--line-2)"}`,
+          color: "var(--ink)",
+          boxShadow: open ? "0 0 0 3px var(--accent-soft)" : "var(--shadow-sm)",
+        }}
+      >
+        <FolderOpen
+          size={14}
+          className="shrink-0 transition-colors"
+          style={{ color: open ? "var(--accent)" : "var(--ink-3)" }}
+          aria-hidden
+        />
+        <span className="truncate max-w-44">{current?.name ?? "选择板块"}</span>
+        <ChevronDown
+          size={13}
+          className={`ml-auto shrink-0 transition-transform duration-150${
+            open ? " rotate-180" : ""
+          }`}
+          style={{ color: "var(--ink-3)" }}
+          aria-hidden
+        />
+      </button>
+
+      {open && (
+        <div
+          className="absolute z-30 mt-1.5 left-0 w-full min-w-52 rounded-xl overflow-hidden"
+          style={{
+            background: "var(--panel)",
+            border: "1px solid var(--line-2)",
+            boxShadow: "var(--shadow-lg)",
+          }}
+        >
+          <ul
+            ref={listRef}
+            role="listbox"
+            aria-label="板块列表"
+            className="max-h-60 overflow-y-auto p-1.5"
+          >
+            {boards.map((b, i) => {
+              const active = b.id === value;
+              return (
+                <li key={b.id}>
+                  <button
+                    type="button"
+                    role="option"
+                    aria-selected={active}
+                    tabIndex={-1}
+                    onClick={() => select(b.id)}
+                    onMouseEnter={() => setHi(i)}
+                    className="w-full flex items-center gap-2 px-2.5 py-2 rounded-lg text-left text-[13px] transition-colors"
+                    style={{
+                      background: active
+                        ? "var(--nav-active-bg)"
+                        : i === hi
+                          ? "var(--panel-2)"
+                          : undefined,
+                      color: active ? "var(--nav-active-ink)" : "var(--ink-2)",
+                    }}
+                  >
+                    <span className="flex-1 truncate font-medium">{b.name}</span>
+                    {active && <Check size={13} className="shrink-0" aria-hidden />}
+                  </button>
+                </li>
+              );
+            })}
+          </ul>
+        </div>
+      )}
+    </div>
+  );
+}
+
+/** 加载骨架：模拟 手柄/徽章/标题/摘要 行结构 */
+function PinListSkeleton() {
+  return (
+    <ul aria-hidden>
+      {[0, 1, 2, 3].map((i) => (
+        <li
+          key={i}
+          className="flex items-center gap-3 px-4 py-3"
+          style={{ borderTop: i === 0 ? "none" : "1px solid var(--line)" }}
+        >
+          <span
+            className="w-5 h-7 -ml-1 rounded-md animate-pulse shrink-0"
+            style={{ background: "var(--panel-2)" }}
+          />
+          <span
+            className="w-7 h-7 rounded-lg animate-pulse shrink-0"
+            style={{ background: "var(--panel-2)" }}
+          />
+          <div className="flex-1 min-w-0 flex flex-col gap-1.5">
+            <span
+              className="h-3.5 rounded animate-pulse"
+              style={{ background: "var(--panel-2)", width: `${52 - i * 9}%` }}
+            />
+            <span
+              className="h-3 w-28 rounded animate-pulse"
+              style={{ background: "var(--panel-2)" }}
+            />
+          </div>
+        </li>
+      ))}
+    </ul>
+  );
+}
--- a/frontend/app/admin/pinned/page.tsx
+++ b/frontend/app/admin/pinned/page.tsx
@@ -0,0 +1,42 @@
+import type { Metadata } from "next";
+import { cookies } from "next/headers";
+import { authCookieHeader } from "@/lib/cookies";
+import { fetchBoards, type BoardWithCount } from "@/lib/api";
+import { getMeCached } from "@/lib/serverData";
+import { canModerateAny, isAdminOrAbove } from "@/lib/roles";
+import Forbidden from "../Forbidden";
+import PinnedAdmin from "./PinnedAdmin";
+
+export const metadata: Metadata = {
+  title: "置顶管理",
+};
+
+export default async function AdminPinnedPage() {
+  const cookie = authCookieHeader(await cookies());
+  const me = await getMeCached(cookie || undefined);
+
+  // 管理员及以上排全站置顶；板块管理员排自己授权板块的板块置顶
+  if (!me.user || !canModerateAny(me.user)) {
+    return <Forbidden text="你所在的角色没有置顶管理权限，或尚未被授权任何板块。" />;
+  }
+
+  // 板块管理员只能看到自己被授权的板块
+  let boards: BoardWithCount[] = [];
+  try {
+    const r = await fetchBoards();
+    boards = r.boards ?? [];
+  } catch {
+    boards = [];
+  }
+  if (!isAdminOrAbove(me.user.role)) {
+    const ids = new Set(me.user.board_ids ?? []);
+    boards = boards.filter((b) => ids.has(b.id));
+  }
+
+  return (
+    <PinnedAdmin
+      boards={boards.map((b) => ({ id: b.id, name: b.name }))}
+      canGlobal={isAdminOrAbove(me.user.role)}
+    />
+  );
+}
--- a/frontend/app/admin/settings/MobileTabBarPanel.tsx
+++ b/frontend/app/admin/settings/MobileTabBarPanel.tsx
@@ -11,6 +11,7 @@ import { toast } from "@/lib/toast";
 const TAB_META: Record<MobileTabKey, { label: string; hint: string }> = {
  home: { label: "首页", hint: "站点首页" },
  library: { label: "书库", hint: "书库列表页入口" },
+  snippets: { label: "片段", hint: "代码片段列表页入口（默认关闭，开启后显示在底栏）" },
  compose: { label: "发帖", hint: "发帖工作台入口（中央主按钮，无对应首页）" },
  messages: { label: "消息", hint: "私聊/群聊列表；游客不显示" },
  me: { label: "我的", hint: "个人主页；未登录指向登录页" },
@@ -22,6 +23,7 @@ function switchesOf(tabs: MobileTabKey[]): TabSwitches {
  return {
    home: tabs.includes("home"),
    library: tabs.includes("library"),
+    snippets: tabs.includes("snippets"),
    compose: tabs.includes("compose"),
    messages: tabs.includes("messages"),
    me: tabs.includes("me"),
@@ -166,7 +168,7 @@ export default function MobileTabBarPanel({
        <ul className="admin-url-style-notes meta mt-1 text-[12px]">
          <li>顺序即前台底栏展示顺序；未启用的入口保留排序位置，重新启用后按当前顺序插入。</li>
          <li>至少保留一个入口；全部关闭将无法保存。</li>
-          <li>排行榜不在底栏展示，移动端入口由首页抽屉承担。</li>
+          <li>片段、排行榜未放进底栏时，移动端仍可从首页 ☰ 导航抽屉进入（片段默认关闭）。</li>
        </ul>
      </div>
    </AdminSettingsGroup>
--- a/frontend/app/announcement/[id]/page.tsx
+++ b/frontend/app/announcement/[id]/page.tsx
@@ -118,7 +118,7 @@ export default async function AnnouncementPage({ params }: PageProps) {
              <>
                {a.pinned ? (
                  <span className="badge-pin" title="置顶" aria-label="置顶">
-                    <Pin size={12} fill="currentColor" strokeWidth={2.2} aria-hidden />
+                    <Pin size={12} fill="none" strokeWidth={2} aria-hidden />
                  </span>
                ) : null}
                <span className={`j13-anno-tag is-${a.tag_color}`}>{a.tag}</span>
--- a/frontend/app/announcements/page.tsx
+++ b/frontend/app/announcements/page.tsx
@@ -59,7 +59,7 @@ function FeaturedAnnouncement({ a, urlStyle }: { a: Announcement; urlStyle: UrlS
        </span>
        {a.pinned ? (
          <span className="badge-pin" title="置顶" aria-label="置顶">
-            <Pin size={12} fill="currentColor" strokeWidth={2.2} aria-hidden />
+            <Pin size={12} fill="none" strokeWidth={2} aria-hidden />
          </span>
        ) : null}
        <span className={`j13-anno-tag is-${a.tag_color}`}>{a.tag}</span>
@@ -93,7 +93,7 @@ function AnnouncementRow({ a, showDivider, urlStyle }: { a: Announcement; showDi
      <div className="flex items-center gap-2 flex-wrap">
        {a.pinned ? (
          <span className="badge-pin" title="置顶" aria-label="置顶">
-            <Pin size={12} fill="currentColor" strokeWidth={2.2} aria-hidden />
+            <Pin size={12} fill="none" strokeWidth={2} aria-hidden />
          </span>
        ) : null}
        <span className={`j13-anno-tag is-${a.tag_color}`}>{a.tag}</span>
--- a/frontend/app/chat/[id]/ChatRoomClient.tsx
+++ b/frontend/app/chat/[id]/ChatRoomClient.tsx
@@ -688,7 +688,7 @@ export default function ChatRoomClient({
  const isDirect = roomType === "direct";
  const isRealMember = myRole === "owner" || myRole === "admin" || myRole === "member";
  const canView = joined;
-  const oversee = canOverseeChat(meRole);
+  const oversee = canOverseeChat({ role: meRole, can_manage_messages: canManageMessages });
  const siteOwner = isSiteOwner(meRole);
  const canModerateChat =
    oversee || isOwner || isRoomAdmin || (!!canManageMessages && !isDirect);
--- a/frontend/app/globals.css
+++ b/frontend/app/globals.css
@@ -30,6 +30,14 @@
  --gold: #825700;
  --gold-soft: rgba(130, 87, 0, 0.13);

+  /* 置顶 / 推荐徽章专用色：与 --clay/--gold（还被文档类型、图表等复用）解耦，单独可调 */
+  --pin: #c2410c; /* 置顶：焦橙，明度高、不浑浊 */
+  --pin-soft: rgba(194, 65, 12, 0.1);
+  --pin-line: rgba(194, 65, 12, 0.26);
+  --rec: #b7791f; /* 推荐：琥珀金，偏 saffron 而非暗橄榄 */
+  --rec-soft: rgba(183, 121, 31, 0.13);
+  --rec-line: rgba(183, 121, 31, 0.3);
+
  --danger: #c8281e;
  --danger-soft: rgba(200, 40, 30, 0.09);
  --ok: #137333;
@@ -154,6 +162,13 @@
  --gold: #e0b259;
  --gold-soft: rgba(224, 178, 89, 0.16);

+  --pin: #ff9a6b;
+  --pin-soft: rgba(255, 154, 107, 0.14);
+  --pin-line: rgba(255, 154, 107, 0.3);
+  --rec: #e8bd63;
+  --rec-soft: rgba(232, 189, 99, 0.14);
+  --rec-line: rgba(232, 189, 99, 0.3);
+
  --danger: #ff6b60;
  --danger-soft: rgba(255, 107, 96, 0.15);
  --ok: #58d18a;
@@ -5265,6 +5280,36 @@ a.j13-mention-token:hover {
    outline-offset: 2px;
  }

+  /* 置顶管理：行悬停、拖拽手柄、板块下拉触发器焦点 */
+  .pin-row {
+    transition: background 0.15s ease, opacity 0.15s ease;
+  }
+  .pin-row:hover {
+    background: var(--item-hover-bg);
+  }
+  .pin-row.is-dragging {
+    opacity: 0.45;
+  }
+  .pin-drag-handle {
+    cursor: grab;
+    color: var(--ink-3);
+    transition: color 0.15s ease;
+  }
+  .pin-row:hover .pin-drag-handle {
+    color: var(--ink-2);
+  }
+  .pin-drag-handle:active {
+    cursor: grabbing;
+  }
+  .pin-drag-handle:focus-visible {
+    outline: 2px solid var(--accent);
+    outline-offset: 2px;
+  }
+  .pin-board-trigger:focus-visible {
+    outline: 2px solid var(--accent);
+    outline-offset: 2px;
+  }
+
  /* 单页/公告管理：限宽左对齐，不套用设置页 1120px；画布保持镂空，与其他管理页一致 */
  .admin-doc-page {
    width: 100%;
@@ -6592,23 +6637,33 @@ a.j13-mention-token:hover {
    background: var(--accent-soft);
    color: var(--accent);
  }
-  /* 置顶 / 推荐：图标徽章（无文字，配 title/aria-label），全站统一，节省标题空间 */
+  /* 置顶 / 推荐：图标徽章（无文字，配 title/aria-label），全站统一，节省标题空间。
+     形态：圆角方块 + 极淡底 + 同色发丝边 + 线性图标，避免实心图标在小尺寸下发糊。 */
  .badge-pin,
  .badge-rec {
    display: inline-flex;
    align-items: center;
    justify-content: center;
+    box-sizing: border-box;
    width: 20px;
    height: 20px;
-    border-radius: 6px;
+    border-radius: 7px;
+    border: 1px solid;
+    line-height: 0;
  }
  .badge-pin {
-    background: var(--clay-soft);
-    color: var(--clay);
+    color: var(--pin);
+    background: var(--pin-soft);
+    border-color: var(--pin-line);
+  }
+  /* 板块置顶：去掉底色只留描边，弱一档，与全站置顶拉开层级（不换色相，避免多一套语义色） */
+  .badge-pin[data-scope="board"] {
+    background: transparent;
  }
  .badge-rec {
-    background: var(--gold-soft);
-    color: var(--gold);
+    color: var(--rec);
+    background: var(--rec-soft);
+    border-color: var(--rec-line);
  }
  .badge-pending {
    display: inline-flex;
--- a/frontend/app/post/[id]/page.tsx
+++ b/frontend/app/post/[id]/page.tsx
@@ -491,13 +491,18 @@ export default async function PostDetailPage({ params, searchParams }: PageProps
                      使 h1 在徽章旁的剩余空间内折行，徽章始终与标题首行同行（移动端） */}
                  <div className="flex items-start gap-2 min-w-0">
                    {post.pinned > 0 && (
-                      <span className="badge-pin shrink-0 mt-2 sm:mt-3" title="置顶" aria-label="置顶">
-                        <Pin size={13} fill="currentColor" strokeWidth={2.2} aria-hidden />
+                      <span
+                        className="badge-pin shrink-0 mt-2 sm:mt-3"
+                        data-scope={post.pinned >= 2 ? "global" : "board"}
+                        title={post.pinned >= 2 ? "置顶" : "板块置顶"}
+                        aria-label={post.pinned >= 2 ? "置顶" : "板块置顶"}
+                      >
+                        <Pin size={13} fill="none" strokeWidth={2} aria-hidden />
                      </span>
                    )}
                    {post.recommended && (
                      <span className="badge-rec shrink-0 mt-2 sm:mt-3" title="推荐" aria-label="推荐">
-                        <Star size={13} fill="currentColor" strokeWidth={2.2} aria-hidden />
+                        <Star size={13} fill="none" strokeWidth={2} aria-hidden />
                      </span>
                    )}
                    <h1
--- a/frontend/app/snippets/page.tsx
+++ b/frontend/app/snippets/page.tsx
@@ -1,6 +1,8 @@
 import type { Metadata } from "next";
+import { cookies } from "next/headers";
 import { fetchSnippets, fetchSnippetLanguages, fetchSnippetStats, type SnippetStats } from "@/lib/api";
-import { getPublicSettingsCached } from "@/lib/serverData";
+import { getMeCached, getPublicSettingsCached } from "@/lib/serverData";
+import { authCookieHeader } from "@/lib/cookies";
 import { requestCanonical } from "@/lib/canonicalMeta";
 import { snippetsPath } from "@/lib/urlStyle";
 import SnippetExplorer from "@/components/SnippetExplorer";
@@ -17,6 +19,11 @@ export async function generateMetadata(): Promise<Metadata> {
 export default async function SnippetsPage() {
  const settings = await getPublicSettingsCached();

+  // 登录态由服务端判定后下发：客户端组件内再读 cookie 会造成 hydration 不一致。
+  // getMeCached 与 layout 同参调用，命中 React cache 不额外请求后端。
+  const cookie = authCookieHeader(await cookies());
+  const isLoggedIn = !!(await getMeCached(cookie || undefined)).user;
+
  let initialItems: Awaited<ReturnType<typeof fetchSnippets>>["items"] = [];
  let initialTotal = 0;
  let languages: string[] = [];
@@ -43,6 +50,7 @@ export default async function SnippetsPage() {
        languages={languages}
        urlStyle={settings.url_style}
        stats={stats}
+        isLoggedIn={isLoggedIn}
      />
    </div>
  );
--- a/frontend/app/u/[id]/UserProfileContent.tsx
+++ b/frontend/app/u/[id]/UserProfileContent.tsx
@@ -30,13 +30,14 @@ const SORTS: { key: string; label: string }[] = [
 /** 帖子卡（发帖列表与收藏列表共用） */
 async function PostCardItem({ post, allowComments }: { post: PostListItem; allowComments?: boolean }) {
  const urlStyle = (await getPublicSettingsCached()).url_style;
-  const pinned = post.pinned > 0;
+  // 用户主页为全站语境：仅全站置顶(2)高亮，板块置顶(1)在主页不作置顶展示
+  const pinned = post.pinned >= 2;
  return (
    <Link
      href={postPath(urlStyle, post.id)}
      className={`${ITEM_BASE} ${
        pinned
-          ? "bg-[color-mix(in_srgb,#fde68a_22%,var(--panel))] border-[color-mix(in_srgb,#fde68a_70%,var(--line))] hover:bg-[color-mix(in_srgb,#fde68a_30%,var(--panel))]"
+          ? "bg-[color-mix(in_srgb,var(--pin)_9%,var(--panel))] border-[color-mix(in_srgb,var(--pin)_30%,var(--line))] hover:bg-[color-mix(in_srgb,var(--pin)_14%,var(--panel))]"
          : "bg-[var(--panel)] border-[var(--line)] hover:bg-[color-mix(in_srgb,var(--ink)_3.5%,var(--panel))]"
      }`}
      style={{ boxShadow: CARD_SHADOW }}
@@ -45,10 +46,11 @@ async function PostCardItem({ post, allowComments }: { post: PostListItem; allow
        {pinned && (
          <span
            className="badge-pin shrink-0 mt-0.5"
+            data-scope="global"
            title="置顶"
            aria-label="置顶"
          >
-            <Pin size={12} fill="currentColor" strokeWidth={2.2} aria-hidden />
+            <Pin size={12} fill="none" strokeWidth={2} aria-hidden />
          </span>
        )}
        <h2
@@ -59,7 +61,7 @@ async function PostCardItem({ post, allowComments }: { post: PostListItem; allow
        </h2>
        {post.recommended && (
          <span className="badge-rec shrink-0 mt-0.5" title="推荐" aria-label="推荐">
-            <Star size={12} fill="currentColor" strokeWidth={2.2} aria-hidden />
+            <Star size={12} fill="none" strokeWidth={2} aria-hidden />
          </span>
        )}
      </div>
--- a/frontend/components/MobileTabBar.tsx
+++ b/frontend/components/MobileTabBar.tsx
@@ -6,6 +6,7 @@ import { Fragment, useEffect, useState } from "react";
 import {
  Home,
  BookOpen,
+  CodeXml,
  PenSquare,
  MessageSquare,
  User as UserIcon,
@@ -14,7 +15,7 @@ import { apiChatUnreadSummary, type User } from "@/lib/api";
 import { useAllowMessages } from "@/components/MessagesPolicyProvider";
 import { useSiteBrand } from "@/components/SiteBrandProvider";
 import { onDocumentVisible } from "@/lib/visibilityReconcile";
-import { userPath, libraryPath } from "@/lib/urlStyle";
+import { userPath, libraryPath, snippetsPath } from "@/lib/urlStyle";
 import { realtime, RT_CHAT_UNREAD } from "@/lib/realtime";
 import type { RtChatUnreadData } from "@/lib/realtime";
 import type { MobileTabKey } from "@/lib/mobileTabs";
@@ -36,6 +37,7 @@ export default function MobileTabBar({
  const allowMessages = useAllowMessages();
  const { url_style: urlStyle, mobile_tabs: mobileTabs } = useSiteBrand();
  const libHref = libraryPath(urlStyle);
+  const snipHref = snippetsPath(urlStyle);
  const [chatUnread, setChatUnread] = useState(initialChatUnread);

  // 登录态经 router.refresh() 下发新 props 时校正徽标
@@ -100,6 +102,16 @@ export default function MobileTabBar({
        active={isActive((p) => p === libHref)}
      />
    ),
+    snippets: (
+      <TabLink
+        href={snipHref}
+        icon={<CodeXml size={20} />}
+        label="片段"
+        active={isActive(
+          (p) => p === snipHref || p.startsWith("/snippets") || p.startsWith("/snippet-"),
+        )}
+      />
+    ),
    compose: (
      <TabLink
        href={user ? "/compose" : "/login"}
--- a/frontend/components/PinnedPosts.tsx
+++ b/frontend/components/PinnedPosts.tsx
@@ -15,7 +15,7 @@ function formatTime(dateStr: string) {

 /**
 * 管理员置顶区：独立于普通帖子列表。
- * 陶土色语义（与 badge-pin 一致），紧凑排列，一眼识别为公告性质内容。
+ * 焦橙语义（与 badge-pin 一致），紧凑排列，一眼识别为公告性质内容。
 */
 export default async function PinnedPosts({
  posts,
@@ -32,11 +32,11 @@ export default async function PinnedPosts({
      <div className="flex items-center gap-2 mb-2.5 px-1">
        <span
          className="w-6 h-6 rounded-full flex items-center justify-center"
-          style={{ background: "var(--clay-soft)", color: "var(--clay)" }}
+          style={{ background: "var(--pin-soft)", color: "var(--pin)" }}
        >
-          <Pin size={12} fill="currentColor" strokeWidth={2.4} />
+          <Pin size={12} fill="none" strokeWidth={2} />
        </span>
-        <h2 className="text-[13.5px] font-extrabold tracking-wide" style={{ color: "var(--clay)" }}>
+        <h2 className="text-[13.5px] font-extrabold tracking-wide" style={{ color: "var(--pin)" }}>
          置顶讨论
        </h2>
        <span className="meta text-xs">管理员置顶 · {posts.length}</span>
@@ -78,7 +78,7 @@ export default async function PinnedPosts({
                    title="推荐"
                    aria-label="推荐"
                  >
-                    <Star size={10} fill="currentColor" strokeWidth={2.2} aria-hidden />
+                    <Star size={10} fill="none" strokeWidth={2} aria-hidden />
                  </span>
                )}
              </div>
@@ -94,9 +94,9 @@ export default async function PinnedPosts({
            <Pin
              size={13}
              className="shrink-0 hidden sm:block"
-              style={{ color: "var(--clay)" }}
-              fill="currentColor"
-              strokeWidth={2.2}
+              style={{ color: "var(--pin)" }}
+              fill="none"
+              strokeWidth={2}
            />
          </Link>
        ))}
--- a/frontend/components/PostActions.tsx
+++ b/frontend/components/PostActions.tsx
@@ -46,7 +46,7 @@ export default function PostActions({
  const [user, setUser] = useState<User | null>(null);
  const [open, setOpen] = useState(false);
  const [deleting, setDeleting] = useState(false);
-  const [isPinned, setIsPinned] = useState(pinned > 0);
+  const [pinLevel, setPinLevel] = useState(pinned);
  const [isRecommended, setIsRecommended] = useState(recommended);
  const [isLocked, setIsLocked] = useState(locked);
  const [acting, setActing] = useState(false);
@@ -89,6 +89,13 @@ export default function PostActions({
  const showEdit = canManage && !(isLocked && !staffUser) && !editTimeLocked;
  const canApprove =
    !!user && status === "pending" && canModerateBoard(user, boardId);
+  // 置顶分级：管理员及以上可设全局置顶(2)与板块置顶(1)；板块管理员只在其授权板块做板块置顶。
+  // 已是全站置顶的帖子，板块管理员不可操作，故不展示入口。
+  const canGlobalPin = isAdmin;
+  const canBoardPin = !!user && canModerateBoard(user, boardId);
+  const showGlobalPin = canGlobalPin;
+  const showBoardPin = canBoardPin && (isAdmin || pinLevel < 2);
+  const showPin = showGlobalPin || showBoardPin;
  // staff 删他人帖：走类型+理由；作者自删：简单确认
  const staffDeletingOther =
    !!user && user.id !== authorId && canStaffSoftDelete(user, boardId, authorRole);
@@ -126,16 +133,24 @@ export default function PostActions({
    }
  };

-  const handlePin = async () => {
+  const handlePin = async (level: 1 | 2) => {
    setActing(true);
    setOpen(false);
    try {
-      const res = await apiTogglePin(postId);
-      setIsPinned(res.pinned > 0);
-      toast(res.pinned > 0 ? "已置顶" : "已取消置顶", "ok");
+      // 再次点击当前级别 = 取消置顶
+      const next = pinLevel === level ? 0 : level;
+      const res = await apiTogglePin(postId, next as 0 | 1 | 2);
+      setPinLevel(res.pinned);
+      const okMsg =
+        res.pinned <= 0
+          ? "已取消置顶"
+          : res.pinned === 2
+            ? "已全局置顶"
+            : "已在本板块置顶";
+      toast(okMsg, "ok");
      router.refresh();
-    } catch {
-      toast("操作失败，请稍后重试");
+    } catch (e) {
+      toast(e instanceof Error ? e.message : "操作失败，请稍后重试");
    } finally {
      setActing(false);
    }
@@ -220,25 +235,44 @@ export default function PostActions({
              <div style={{ height: 1, background: "var(--line)" }} />
            </>
          )}
+          {showPin && (
+            <>
+              {showGlobalPin && (
+                <button
+                  type="button"
+                  role="menuitem"
+                  onClick={() => void handlePin(2)}
+                  className={itemCls}
+                  style={pinLevel === 2 ? { color: "var(--pin)" } : { color: "var(--ink)" }}
+                >
+                  <Pin size={14} className="shrink-0" />
+                  <span className="flex-1 text-left">全局置顶</span>
+                  {pinLevel === 2 && <Check size={14} className="shrink-0" />}
+                </button>
+              )}
+              {showBoardPin && (
+                <button
+                  type="button"
+                  role="menuitem"
+                  onClick={() => void handlePin(1)}
+                  className={itemCls}
+                  style={pinLevel === 1 ? { color: "var(--pin)" } : { color: "var(--ink)" }}
+                >
+                  <Pin size={14} className="shrink-0" />
+                  <span className="flex-1 text-left">板块置顶</span>
+                  {pinLevel === 1 && <Check size={14} className="shrink-0" />}
+                </button>
+              )}
+            </>
+          )}
          {isAdmin && (
            <>
-              <button
-                type="button"
-                role="menuitem"
-                onClick={handlePin}
-                className={itemCls}
-                style={isPinned ? { color: "var(--accent)" } : { color: "var(--ink)" }}
-              >
-                <Pin size={14} className="shrink-0" />
-                <span className="flex-1 text-left">{isPinned ? "取消置顶" : "置顶"}</span>
-                {isPinned && <Check size={14} className="shrink-0" />}
-              </button>
              <button
                type="button"
                role="menuitem"
                onClick={handleRecommend}
                className={itemCls}
-                style={isRecommended ? { color: "var(--gold)" } : { color: "var(--ink)" }}
+                style={isRecommended ? { color: "var(--rec)" } : { color: "var(--ink)" }}
              >
                <Star size={14} className="shrink-0" />
                <span className="flex-1 text-left">{isRecommended ? "取消推荐" : "推荐"}</span>
--- a/frontend/components/PostRow.tsx
+++ b/frontend/components/PostRow.tsx
@@ -73,13 +73,18 @@ export default async function PostRow({
        <div className="flex items-center gap-2 min-w-0">
          {/* 仅置顶/推荐在标题左侧 */}
          {post.pinned > 0 && (
-            <span className="badge-pin shrink-0" title="置顶" aria-label="置顶">
-              <Pin size={12} fill="currentColor" strokeWidth={2.2} aria-hidden />
+            <span
+              className="badge-pin shrink-0"
+              data-scope={post.pinned >= 2 ? "global" : "board"}
+              title={post.pinned >= 2 ? "置顶" : "板块置顶"}
+              aria-label={post.pinned >= 2 ? "置顶" : "板块置顶"}
+            >
+              <Pin size={12} fill="none" strokeWidth={2} aria-hidden />
            </span>
          )}
          {post.recommended && (
            <span className="badge-rec shrink-0" title="推荐" aria-label="推荐">
-              <Star size={12} fill="currentColor" strokeWidth={2.2} aria-hidden />
+              <Star size={12} fill="none" strokeWidth={2} aria-hidden />
            </span>
          )}
          <div className="min-w-0 flex items-center gap-2 flex-1 overflow-hidden">
--- a/frontend/components/RoleAccountModal.tsx
+++ b/frontend/components/RoleAccountModal.tsx
@@ -149,7 +149,6 @@ export default function RoleAccountModal({
  const messagesChanged =
    canGrantSuper &&
    target.role !== ROLES.OWNER &&
-    target.role !== ROLES.SUPER_ADMIN &&
    manageMessages !== !!target.can_manage_messages;
  /** 渠道权限可编辑性跟随弹窗中选中的角色：管理员及以上自带全部渠道 */
  const channelEditable = roleLevel(role) < ROLE_LEVEL[ROLES.ADMIN];
@@ -462,9 +461,7 @@ export default function RoleAccountModal({
        </div>
      )}

-      {canGrantSuper &&
-        target.role !== ROLES.OWNER &&
-        target.role !== ROLES.SUPER_ADMIN && (
+      {canGrantSuper && target.role !== ROLES.OWNER && (
        <div className="mt-5 pt-4" style={{ borderTop: "1px solid var(--line)" }}>
          <p className="text-[12px] font-medium tracking-wide mb-2.5" style={{ color: "var(--ink-3)" }}>
            消息管理
@@ -488,7 +485,7 @@ export default function RoleAccountModal({
                站点群消息管理
              </span>
              <span className="block mt-1 text-[11.5px] leading-snug" style={{ color: "var(--ink-3)" }}>
-                  可在后台管理全部群聊消息（不含私聊）；站长/超管固有全站监管无需此项。
+                可在后台管理全部群聊消息（不含私聊）；超管授予后另获全站会话（含私聊）监管；站长固有无需此项。
              </span>
            </span>
            <span
--- a/frontend/components/SiteChrome.tsx
+++ b/frontend/components/SiteChrome.tsx
@@ -7,7 +7,7 @@ import Footer from "@/components/Footer";
 import BackToTop from "@/components/BackToTop";
 import MobileTabBar from "@/components/MobileTabBar";
 import type { User } from "@/lib/api";
-import { libraryPath, userPath } from "@/lib/urlStyle";
+import { libraryPath, snippetsPath, userPath } from "@/lib/urlStyle";
 import { useSiteBrand } from "@/components/SiteBrandProvider";

 function pathIsAdmin(pathname: string | null) {
@@ -88,6 +88,7 @@ export default function SiteChrome({
  const tabBarRoots: string[] = [];
  if (enabledTabs.has("home")) tabBarRoots.push("/");
  if (enabledTabs.has("library")) tabBarRoots.push(libraryPath(brand.url_style));
+  if (enabledTabs.has("snippets")) tabBarRoots.push(snippetsPath(brand.url_style));
  if (enabledTabs.has("messages")) tabBarRoots.push("/chat");
  if (enabledTabs.has("me") && meHref) tabBarRoots.push(meHref);
  const showTabBar =
--- a/frontend/components/SnippetExplorer.tsx
+++ b/frontend/components/SnippetExplorer.tsx
@@ -11,7 +11,6 @@ import {
  GitFork,
  Plus,
  Lock,
-  Loader2,
  ArrowLeft,
  ArrowRight,
  RotateCcw,
@@ -22,7 +21,6 @@ import { snippetPath, type UrlStyle } from "@/lib/urlStyle";
 import { formatRelative } from "@/lib/format";
 import Avatar from "@/components/Avatar";
 import { toast } from "@/lib/toast";
-import { hasAuthCookieHint } from "@/lib/cookies";
 import { siteCodeToHtml } from "@/components/markdown/shikiHighlighter";
 import SnippetLangSelect from "@/components/SnippetLangSelect";
 import SnippetHero from "@/components/SnippetHero";
@@ -278,36 +276,20 @@ const SORT_OPTIONS: { value: SnippetSort; label: string }[] = [
  { value: "fork", label: "Fork" },
 ];

-function CardSkeleton() {
-  return (
-    <div
-      className="rounded-xl overflow-hidden animate-pulse"
-      style={{ background: "var(--panel)", border: "1px solid var(--line)" }}
-    >
-      <div className="px-3.5 pt-3.5 pb-2.5">
-        <div className="h-2.5 w-16 rounded" style={{ background: "var(--panel-2)" }} />
-        <div className="mt-2.5 h-3.5 w-3/4 rounded" style={{ background: "var(--panel-2)" }} />
-      </div>
-      <div className="mx-3.5 rounded-lg h-[128px]" style={{ background: "var(--panel-2)" }} />
-      <div className="px-3.5 py-3 mt-1">
-        <div className="h-2.5 w-2/3 rounded" style={{ background: "var(--panel-2)" }} />
-      </div>
-    </div>
-  );
-}
-
 export default function SnippetExplorer({
  initialItems,
  initialTotal,
  languages,
  urlStyle,
  stats,
+  isLoggedIn,
 }: {
  initialItems: SnippetListItem[];
  initialTotal: number;
  languages: string[];
  urlStyle: UrlStyle;
  stats: SnippetStats | null;
+  isLoggedIn: boolean;
 }) {
  const [items, setItems] = useState(initialItems);
  const [total, setTotal] = useState(initialTotal);
@@ -317,7 +299,6 @@ export default function SnippetExplorer({
  const [lang, setLang] = useState("");
  const [sort, setSort] = useState<SnippetSort>("latest");
  const [scope, setScope] = useState<"public" | "mine">("public");
-  const isLoggedIn = typeof window !== "undefined" ? hasAuthCookieHint() : false;

  const pageSize = 12;
  const totalPages = Math.max(1, Math.ceil(total / pageSize));
@@ -360,7 +341,7 @@ export default function SnippetExplorer({
  return (
    <div>
      {/* 未来科技感 Hero：网格 + 扫描线 + 统计矩阵 */}
-      <SnippetHero stats={stats} />
+      <SnippetHero stats={stats} isLoggedIn={isLoggedIn} />

      {/* 工具台：IDE 风格软底工具条，控件浮于其上（无框中框） */}
      <div
@@ -472,30 +453,19 @@ export default function SnippetExplorer({
        )}
      </div>

-      {/* 结果统计 */}
+      {/* 结果统计：纯文本行，切换范围时数据原地更新，无任何加载指示 */}
      <div className="mt-3 flex items-center gap-2 text-[12px]" style={{ color: "var(--ink-3)" }}>
-        {loading ? (
-          <Loader2 size={12} className="animate-spin" />
-        ) : (
        <span className="tabular-nums" style={{ fontFamily: MONO }}>
          <span style={{ color: "var(--accent)" }}>$</span>{" "}
          {scope === "mine" ? "ls ~/snippets --count" : "ls --count"}
        </span>
-        )}
        <span>
          共 <b className="tabular-nums" style={{ color: "var(--ink-2)" }}>{total}</b> 个片段
-          {loading ? "，加载中…" : ""}
        </span>
      </div>

-      {/* 列表 / 空态 */}
-      {loading && items.length === 0 ? (
-        <div className="mt-4 grid grid-cols-1 gap-4 sm:grid-cols-2 lg:grid-cols-3 xl:grid-cols-4">
-          {Array.from({ length: 8 }).map((_, i) => (
-            <CardSkeleton key={i} />
-          ))}
-        </div>
-      ) : items.length === 0 && !loading ? (
+      {/* 列表 / 空态：请求期间保留现有内容，新数据返回后原地替换，不闪空态 */}
+      {items.length === 0 ? (
        filtering ? (
          <div
            className="mt-4 rounded-xl px-6 py-12 text-center"
--- a/frontend/components/SnippetHero.tsx
+++ b/frontend/components/SnippetHero.tsx
@@ -8,7 +8,6 @@ import {
 } from "lucide-react";
 import type { SnippetStats } from "@/lib/api";
 import { snippetLangColor } from "@/lib/snippetLangColors";
-import { hasAuthCookieHint } from "@/lib/cookies";

 const MONO = "var(--font-mono, ui-monospace, SFMono-Regular, Menlo, monospace)";

@@ -151,8 +150,13 @@ function LangTicker({ langs }: { langs: string[] }) {
  );
 }

-export default function SnippetHero({ stats }: { stats: SnippetStats | null }) {
-  const isLoggedIn = typeof window !== "undefined" ? hasAuthCookieHint() : false;
+export default function SnippetHero({
+  stats,
+  isLoggedIn,
+}: {
+  stats: SnippetStats | null;
+  isLoggedIn: boolean;
+}) {
  const s = stats;
  const total = useRollIn(s?.total_snippets ?? 0);
  const copies = useRollIn(s?.total_copies ?? 0);
--- a/frontend/components/admin/AdminShell.tsx
+++ b/frontend/components/admin/AdminShell.tsx
@@ -32,6 +32,7 @@ import {
  Images,
  Link2,
  CodeXml,
+  Pin,
 } from "lucide-react";
 import type { User } from "@/lib/api";
 import { apiAdminPendingCounts, apiLogout } from "@/lib/api";
@@ -95,6 +96,12 @@ const NAV_GROUPS: NavGroup[] = [
        visible: (u) => canModerateAny(u),
        pendingBadge: true,
      },
+      {
+        href: "/admin/pinned",
+        label: "置顶管理",
+        icon: Pin,
+        visible: (u) => canModerateAny(u),
+      },
      {
        href: "/admin/messages",
        label: "消息管理",
--- a/frontend/components/home/WorkspaceNav.tsx
+++ b/frontend/components/home/WorkspaceNav.tsx
@@ -1,14 +1,14 @@
 "use client";

 import Link from "next/link";
-import { useSearchParams } from "next/navigation";
+import { usePathname, useSearchParams } from "next/navigation";
 import { useCallback, useEffect, useRef, useState, type ReactNode } from "react";
-import { Bookmark, Home, LayoutGrid, Menu, ShieldCheck } from "lucide-react";
+import { Bookmark, CodeXml, Home, LayoutGrid, Menu, ShieldCheck, Trophy } from "lucide-react";
 import type { BoardWithCount, User } from "@/lib/api";
 import { isStaff } from "@/lib/roles";
 import BoardIcon, { boardColor } from "@/components/BoardIcon";
 import { useUrlStyle } from "@/components/SiteBrandProvider";
-import { userPath } from "@/lib/urlStyle";
+import { leaderboardPath, snippetsPath, userPath } from "@/lib/urlStyle";
 import { RailDrawerPanel, useDrawerChrome } from "@/components/MobileRailDrawers";

 // 首页壳内板块切换：仅替换中栏帖子流，不离开工作台
@@ -26,9 +26,16 @@ export function WorkspaceNavPanel({
  user?: User | null;
 }) {
  const params = useSearchParams();
+  const pathname = usePathname();
  const urlStyle = useUrlStyle();
  const activeBoard = Number(params.get("board")) || 0;
  const showAdmin = !!user && isStaff(user.role);
+  const snipHref = snippetsPath(urlStyle);
+  const lbHref = leaderboardPath(urlStyle);
+  // 与 Header 高亮规则一致：覆盖标准路径与伪静态（/snippet-*.html、/rank.html 等）
+  const snippetsActive =
+    !!pathname && (pathname.startsWith("/snippets") || pathname.startsWith("/snippet-"));
+  const leaderboardActive = !!pathname && (pathname === lbHref || pathname.startsWith(`${lbHref}/`));

  return (
    <section className="j13-module flex max-h-[var(--rail-max-h)] flex-col overflow-hidden" aria-label="板块目录">
@@ -49,6 +56,37 @@ export function WorkspaceNavPanel({
          <span className="j13-bcard-name flex-1 truncate">全部讨论</span>
        </Link>

+        {/* 不进底栏的全局入口：仅移动端展示（首页 ☰ 导航抽屉是其在移动端的唯一路径），
+            桌面端由顶部导航承担，左栏不重复 */}
+        <Link
+          href={snipHref}
+          className="j13-bcard lg:hidden"
+          aria-current={snippetsActive ? "page" : undefined}
+        >
+          <span
+            className="j13-bcard-ico"
+            style={{ background: "var(--accent-soft)", color: "var(--accent)" }}
+            aria-hidden="true"
+          >
+            <CodeXml size={15} />
+          </span>
+          <span className="j13-bcard-name flex-1 truncate">代码片段</span>
+        </Link>
+        <Link
+          href={lbHref}
+          className="j13-bcard lg:hidden"
+          aria-current={leaderboardActive ? "page" : undefined}
+        >
+          <span
+            className="j13-bcard-ico"
+            style={{ background: "var(--accent-soft)", color: "var(--accent)" }}
+            aria-hidden="true"
+          >
+            <Trophy size={15} />
+          </span>
+          <span className="j13-bcard-name flex-1 truncate">排行榜</span>
+        </Link>
+
        {user ? (
          <Link href={`${userPath(urlStyle, user.id)}?tab=favorites`} className="j13-bcard">
            <span
--- a/frontend/lib/api.ts
+++ b/frontend/lib/api.ts
@@ -81,7 +81,7 @@ export interface User {
  role: string;
  // 板块管理员被授权的板块（仅 /api/me 返回；前端据此渲染审核入口/按钮）
  board_ids?: number[];
-  // 站点消息管理（站长授予；站长/超管固有监管不必依赖此字段）
+  // 站点消息管理（仅站长可授；超管亦需授予，站长固有监管不必依赖此字段）
  can_manage_messages?: boolean;
  // 生效权限码（角色默认 ∪ 账号级渠道授予；仅 /api/me 返回，用于后台入口显隐）
  perms?: string[];
@@ -2261,8 +2261,8 @@ export async function apiDeletePost(
  return res.json();
 }

-export async function apiTogglePin(postId: string): Promise<{ pinned: number }> {
-  const res = await fetchWithRefresh(`/api/posts/${postId}/pin`, {
+export async function apiTogglePin(postId: string, level: 0 | 1 | 2): Promise<{ pinned: number }> {
+  const res = await fetchWithRefresh(`/api/posts/${postId}/pin?level=${level}`, {
    method: "PUT",
    headers: clientHeaders(),
  });
@@ -4059,6 +4059,38 @@ export const apiAdminRestoreComment = (id: number) =>
 export const apiAdminPurgeComment = (id: number) =>
  contentAction(`/api/admin/content/comments/${id}/purge`, "DELETE");

+// ===== 置顶顺序配置 =====
+export interface AdminPinnedPost {
+  id: number;
+  title: string;
+  pinned: number;
+  pin_order: number;
+  board_id: number;
+  board_name: string;
+  created_at: string;
+}
+
+export async function apiAdminPinnedPosts(
+  level: 1 | 2,
+  boardId?: number
+): Promise<{ posts: AdminPinnedPost[] }> {
+  const params = new URLSearchParams({ level: String(level) });
+  if (boardId) params.set("board_id", String(boardId));
+  const res = await fetchWithRefresh(`/api/admin/pinned-posts?${params}`, {
+    headers: clientHeaders(),
+  });
+  const data = await res.json().catch(() => ({}));
+  if (!res.ok) throw new Error(data.error || "获取置顶列表失败");
+  return data;
+}
+
+export const apiAdminSavePinOrder = (level: 1 | 2, boardId: number, ids: number[]) =>
+  contentAction(`/api/admin/pinned-posts/order`, "PUT", {
+    level,
+    board_id: boardId,
+    ids,
+  });
+
 export interface CommentEditHistoryItem {
  id: number;
  editor: {
--- a/frontend/lib/mobileTabs.test.ts
+++ b/frontend/lib/mobileTabs.test.ts
@@ -7,6 +7,10 @@ describe("normalizeMobileTabs", () => {
    assert.deepEqual(normalizeMobileTabs(["home", "me"]), ["home", "me"]);
    assert.deepEqual(normalizeMobileTabs(["messages"]), ["messages"]);
  });
+  it("snippets 为白名单合法项，显式启用时保留", () => {
+    assert.deepEqual(normalizeMobileTabs(["snippets"]), ["snippets"]);
+    assert.deepEqual(normalizeMobileTabs(["home", "snippets", "me"]), ["home", "snippets", "me"]);
+  });
  it("去重与去空白", () => {
    assert.deepEqual(normalizeMobileTabs(["home", "home", "", "  ", "me"]), ["home", "me"]);
  });
@@ -16,15 +20,18 @@ describe("normalizeMobileTabs", () => {
  it("非法元素被剔除", () => {
    assert.deepEqual(normalizeMobileTabs(["home", "trophy", 42, null]), ["home"]);
  });
-  it("空数组/非法输入回落默认全量", () => {
+  it("空数组/非法输入回落默认集合", () => {
    assert.deepEqual(normalizeMobileTabs([]), DEFAULT_MOBILE_TABS);
    assert.deepEqual(normalizeMobileTabs(["nope"]), DEFAULT_MOBILE_TABS);
    assert.deepEqual(normalizeMobileTabs(undefined), DEFAULT_MOBILE_TABS);
    assert.deepEqual(normalizeMobileTabs("home"), DEFAULT_MOBILE_TABS);
    assert.deepEqual(normalizeMobileTabs(null), DEFAULT_MOBILE_TABS);
  });
-  it("默认全量与固定顺序一致", () => {
+  it("白名单与默认集合：snippets 在白名单内但默认不启用", () => {
+    assert.equal(MOBILE_TABS.length, 6);
+    assert.ok(MOBILE_TABS.includes("snippets"));
    assert.equal(DEFAULT_MOBILE_TABS.length, 5);
-    assert.deepEqual(DEFAULT_MOBILE_TABS, [...MOBILE_TABS]);
+    assert.ok(!DEFAULT_MOBILE_TABS.includes("snippets"));
+    assert.deepEqual(DEFAULT_MOBILE_TABS, MOBILE_TABS.filter((k) => k !== "snippets"));
  });
 });
--- a/frontend/lib/mobileTabs.ts
+++ b/frontend/lib/mobileTabs.ts
@@ -1,17 +1,20 @@
 /**
 * 移动端底栏配置的单一事实源：
 * 与后端 service.MobileTabKeys 保持一致；管理面板、MobileTabBar、公共设置 normalize 共用。
- * 配置为有序数组，数组顺序即前台底栏展示顺序；配置为空/非法回落默认全量。
+ * 配置为有序数组，数组顺序即前台底栏展示顺序；配置为空/非法回落默认集合。
+ *
+ * MOBILE_TABS = 白名单（同时是管理面板排序基准），含全部可选 key；
+ * DEFAULT_MOBILE_TABS = 缺省启用集合，是白名单的子集（snippets 默认关闭，需管理员手动开启）。
 */

-export const MOBILE_TABS = ["home", "library", "compose", "messages", "me"] as const;
+export const MOBILE_TABS = ["home", "library", "snippets", "compose", "messages", "me"] as const;

 export type MobileTabKey = (typeof MOBILE_TABS)[number];

-/** 底栏默认全量配置 */
-export const DEFAULT_MOBILE_TABS: MobileTabKey[] = [...MOBILE_TABS];
+/** 底栏默认启用配置（白名单子集：snippets 默认不启用，移动端入口由首页导航抽屉承担） */
+export const DEFAULT_MOBILE_TABS: MobileTabKey[] = ["home", "library", "compose", "messages", "me"];

-/** 配置子集解析：去空白、去重、只留白名单内元素；结果为空视为非法，回落默认全量 */
+/** 配置子集解析：去空白、去重、只留白名单内元素；结果为空视为非法，回落默认集合 */
 export function normalizeMobileTabs(raw: unknown): MobileTabKey[] {
  if (!Array.isArray(raw)) return [...DEFAULT_MOBILE_TABS];
  const seen = new Set<string>();
--- a/frontend/lib/roles.ts
+++ b/frontend/lib/roles.ts
@@ -76,9 +76,11 @@ export const PERM_META: Record<
  [PERMS.ADS]: { label: "广告与赞助", desc: "管理广告位与赞助配置、审批投放" },
 };

-/** 站长/超管：群聊监管旁路（可见全部群含私聊、撤回任意消息） */
-export function canOverseeChat(role?: string | null): boolean {
-  return role === ROLES.OWNER || role === ROLES.SUPER_ADMIN;
+/** 全站消息监管（可见全部群含私聊、撤回任意消息）：站长固有；超管需先被授予「消息管理」 */
+export function canOverseeChat(user?: RoleUserLike | null): boolean {
+  if (!user) return false;
+  if (isOwner(user.role)) return true;
+  return user.role === ROLES.SUPER_ADMIN && !!user.can_manage_messages;
 }

 /** 彻底删除帖/评：仅站长 */
@@ -152,10 +154,10 @@ export function canModerateAny(user: RoleUserLike | null | undefined): boolean {
  return user.role === ROLES.BOARD_ADMIN && (user.board_ids?.length ?? 0) > 0;
 }

-/** 站点级消息管理（站长/超管固有，或 can_manage_messages） */
+/** 站点级消息管理：站长固有；超管及其他角色需站长授予 can_manage_messages */
 export function hasSiteMessagePerm(user: RoleUserLike | null | undefined): boolean {
  if (!user) return false;
-  if (canOverseeChat(user.role)) return true;
+  if (isOwner(user.role)) return true;
  return !!user.can_manage_messages;
 }

@@ -201,7 +203,7 @@ export const ROLE_META: Record<RoleKey, RoleMeta> = {
    colorToken: "--accent",
    softToken: "--accent-soft",
    grantDesc:
-      "用户与角色管理、封禁、外观主题、公告；全站内容软删与置顶/加精；群聊监管（可见全部会话、可撤回任意消息）。不可彻底删除内容，不可动站长账号，亦无站长专属的用户内容档案。",
+      "用户与角色管理、封禁、外观主题、公告；全站内容软删与置顶/加精；站长授予「消息管理」后方可进入后台消息管理并全站会话监管（可见全部会话、可撤回任意消息）。不可彻底删除内容，不可动站长账号，亦无站长专属的用户内容档案。",
  },
  [ROLES.ADMIN]: {
    key: ROLES.ADMIN,
@@ -219,7 +221,7 @@ export const ROLE_META: Record<RoleKey, RoleMeta> = {
    colorToken: "--accent",
    softToken: "--accent-soft",
    grantDesc:
-      "仅审核并软删被授权板块内普通用户的帖子与评论；不可处置管理员/站长发布的内容，无消息管理、公告、置顶/加精、用户管理与外观设置；须至少勾选一个板块。",
+      "仅审核并软删被授权板块内普通用户的帖子与评论；可在被授权板块内单独置顶帖子（板块置顶）。不可处置管理员/站长发布的内容，无消息管理、公告、全站置顶/加精、用户管理与外观设置；须至少勾选一个板块。",
  },
  [ROLES.USER]: {
    key: ROLES.USER,
Author	SHA1	Message	Date
freefire	4e8dfa2b74	chore: bump version to 0.2.11	2026-10-16 16:31:09 +08:00
freefire	55ded2695c	feat: 移动端底部导航可配置与工作区导航、置顶后台等前端调整	2026-10-16 16:26:08 +08:00
freefire	47f87a011c	feat: 帖子分级置顶（板块/全站）与板块管理员置顶权限、消息管理权限调整	2026-10-15 23:35:30 +08:00
@@ -1 +1 @@
 .2.10
 .2.11