新增摸大红业务并修复后台链接按钮白字

支持分类筛选、搜索、下单支付建群与固定二维码；合并迁移种子数据；后台表格编辑/详情链接恢复主题色可见。

backend/internal/modules/file/handler.go

@@ -65,7 +65,12 @@ func (h *Handler) writeObject(c *gin.Context, publicOnly bool) {
 		response.BadRequest(c, "文件 key 不正确")
 		return
 	}
-	if publicOnly && !strings.HasPrefix(key, "home-banner/") && !strings.HasPrefix(key, "avatar/") && !strings.HasPrefix(key, "payment-cert/") && !strings.HasPrefix(key, "announcement/") {
+	if publicOnly &&
+		!strings.HasPrefix(key, "home-banner/") &&
+		!strings.HasPrefix(key, "avatar/") &&
+		!strings.HasPrefix(key, "payment-cert/") &&
+		!strings.HasPrefix(key, "announcement/") &&
+		!strings.HasPrefix(key, "mohong/") {
 		response.Error(c, http.StatusNotFound, "not_found", "文件不存在或暂不可访问")
 		return
 	}

backend/internal/modules/file/service.go

@@ -106,7 +106,7 @@ func normalizeContentType(contentType string, data []byte) string {
 
 func fileURLForScene(scene string, key string) string {
 	fileURL := "/api/files/object?key=" + url.QueryEscape(key)
-	if scene == "home-banner" || scene == "avatar" || scene == "payment-cert" || scene == "announcement" {
+	if scene == "home-banner" || scene == "avatar" || scene == "payment-cert" || scene == "announcement" || scene == "mohong" {
 		fileURL = "/api/public/files/object?key=" + url.QueryEscape(key)
 	}
 	return fileURL
@@ -115,7 +115,7 @@ func fileURLForScene(scene string, key string) string {
 func normalizeScene(scene string) string {
 	scene = strings.TrimSpace(strings.ToLower(scene))
 	switch scene {
-	case "listing", "handoff", "dispute", "realname", "avatar", "home-banner", "chat", "payment-cert", "announcement", "qrcode":
+	case "listing", "handoff", "dispute", "realname", "avatar", "home-banner", "chat", "payment-cert", "announcement", "qrcode", "mohong":
 		return scene
 	default:
 		return "misc"