feat(admin): 完善站点设置、内容回收站与后台菜单分组

新增站点设置与内容管理（含已删除恢复/清除），用户页改用独有运营指标，并按概览/内容/成员与经济/站点重组侧栏。

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

backend/handler/setting.go

@@ -3,41 +3,32 @@ package handler
 import (
 	"errors"
 	"net/http"
-	"strings"
 
 	"github.com/freefire/jiang13-bbs/realtime"
 	"github.com/freefire/jiang13-bbs/service"
 	"github.com/gin-gonic/gin"
 )
 
-// PublicSettings 公开站点设置（无需登录）：前端 SSR 据此注入主题 CSS 变量等
 // GET /api/settings
 func (h *Handlers) PublicSettings(c *gin.Context) {
-	accent, err := h.Setting.AccentColor()
+	s, err := h.Setting.Public()
 	if err != nil {
 		c.JSON(http.StatusInternalServerError, gin.H{"error": "获取站点设置失败"})
 		return
 	}
-	trust, err := h.Setting.TrustReviewedPublish()
-	if err != nil {
-		c.JSON(http.StatusInternalServerError, gin.H{"error": "获取站点设置失败"})
-		return
-	}
-	c.JSON(http.StatusOK, gin.H{
-		"accent":                 accent,
-		"trust_reviewed_publish": trust,
-	})
+	c.JSON(http.StatusOK, s)
 }
 
-// updateSettingsRequest 字段均为可选指针：只更新请求里出现的项，避免外观页覆盖审核策略
+// updateSettingsRequest 字段均为可选指针：只更新请求里出现的项，避免外观页覆盖其它设置
 type updateSettingsRequest struct {
-	// Accent 主题色 #RRGGBB；空串恢复默认
-	Accent *string `json:"accent"`
-	// TrustReviewedPublish 已过审用户后续内容免审
-	TrustReviewedPublish *bool `json:"trust_reviewed_publish"`
+	Accent               *string `json:"accent"`
+	TrustReviewedPublish *bool   `json:"trust_reviewed_publish"`
+	SiteName             *string `json:"site_name"`
+	SiteDescription      *string `json:"site_description"`
+	AllowRegister        *bool   `json:"allow_register"`
+	PostCooldownHours    *int    `json:"post_cooldown_hours"`
 }
 
-// UpdateSettings 更新站点设置（管理员）
 // PUT /api/admin/settings
 func (h *Handlers) UpdateSettings(c *gin.Context) {
 	var req updateSettingsRequest
@@ -45,12 +36,12 @@ func (h *Handlers) UpdateSettings(c *gin.Context) {
 		c.JSON(http.StatusBadRequest, gin.H{"error": "请求参数无效"})
 		return
 	}
-	if req.Accent == nil && req.TrustReviewedPublish == nil {
+	if req.Accent == nil && req.TrustReviewedPublish == nil && req.SiteName == nil &&
+		req.SiteDescription == nil && req.AllowRegister == nil && req.PostCooldownHours == nil {
 		c.JSON(http.StatusBadRequest, gin.H{"error": "未提供任何可更新的设置项"})
 		return
 	}
 
-	savedAccent := ""
 	if req.Accent != nil {
 		if err := h.Setting.SetAccent(*req.Accent); err != nil {
 			if errors.Is(err, service.ErrInvalidAccent) {
@@ -60,43 +51,74 @@ func (h *Handlers) UpdateSettings(c *gin.Context) {
 			c.JSON(http.StatusInternalServerError, gin.H{"error": "保存站点设置失败"})
 			return
 		}
-		savedAccent = strings.ToLower(strings.TrimSpace(*req.Accent))
-	} else {
-		var err error
-		savedAccent, err = h.Setting.AccentColor()
-		if err != nil {
-			c.JSON(http.StatusInternalServerError, gin.H{"error": "获取站点设置失败"})
-			return
-		}
 	}
-
-	trustOn := true
 	if req.TrustReviewedPublish != nil {
 		if err := h.Setting.SetTrustReviewedPublish(*req.TrustReviewedPublish); err != nil {
 			c.JSON(http.StatusInternalServerError, gin.H{"error": "保存站点设置失败"})
 			return
 		}
-		trustOn = *req.TrustReviewedPublish
-	} else {
-		var err error
-		trustOn, err = h.Setting.TrustReviewedPublish()
-		if err != nil {
-			c.JSON(http.StatusInternalServerError, gin.H{"error": "获取站点设置失败"})
+	}
+	if req.SiteName != nil {
+		if err := h.Setting.SetSiteName(*req.SiteName); err != nil {
+			if errors.Is(err, service.ErrInvalidSiteSetting) {
+				c.JSON(http.StatusBadRequest, gin.H{"error": "站点名称过长或无效"})
+				return
+			}
+			c.JSON(http.StatusInternalServerError, gin.H{"error": "保存站点设置失败"})
+			return
+		}
+	}
+	if req.SiteDescription != nil {
+		if err := h.Setting.SetSiteDescription(*req.SiteDescription); err != nil {
+			if errors.Is(err, service.ErrInvalidSiteSetting) {
+				c.JSON(http.StatusBadRequest, gin.H{"error": "站点简介过长"})
+				return
+			}
+			c.JSON(http.StatusInternalServerError, gin.H{"error": "保存站点设置失败"})
+			return
+		}
+	}
+	if req.AllowRegister != nil {
+		if err := h.Setting.SetAllowRegister(*req.AllowRegister); err != nil {
+			c.JSON(http.StatusInternalServerError, gin.H{"error": "保存站点设置失败"})
+			return
+		}
+	}
+	if req.PostCooldownHours != nil {
+		if err := h.Setting.SetPostCooldownHours(*req.PostCooldownHours); err != nil {
+			if errors.Is(err, service.ErrInvalidSiteSetting) {
+				c.JSON(http.StatusBadRequest, gin.H{"error": "冷静期须为 0–168 小时"})
+				return
+			}
+			c.JSON(http.StatusInternalServerError, gin.H{"error": "保存站点设置失败"})
 			return
 		}
 	}
 
-	// 归一化后广播：主题色客户端热换肤；免审开关由下次发帖/发评读库生效
+	saved, err := h.Setting.Public()
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "获取站点设置失败"})
+		return
+	}
+
 	h.Hub.BroadcastAll(realtime.Envelope{
 		Type: realtime.EventSettingsChanged,
 		Data: gin.H{
-			"accent":                 savedAccent,
-			"trust_reviewed_publish": trustOn,
+			"accent":                 saved.Accent,
+			"trust_reviewed_publish": saved.TrustReviewedPublish,
+			"site_name":              saved.SiteName,
+			"site_description":       saved.SiteDescription,
+			"allow_register":         saved.AllowRegister,
+			"post_cooldown_hours":    saved.PostCooldownHours,
 		},
 	})
 	c.JSON(http.StatusOK, gin.H{
 		"ok":                     true,
-		"accent":                 savedAccent,
-		"trust_reviewed_publish": trustOn,
+		"accent":                 saved.Accent,
+		"trust_reviewed_publish": saved.TrustReviewedPublish,
+		"site_name":              saved.SiteName,
+		"site_description":       saved.SiteDescription,
+		"allow_register":         saved.AllowRegister,
+		"post_cooldown_hours":    saved.PostCooldownHours,
 	})
 }