feat: 管理端板块管理与旧版数据导入，补充部署运营文档

- 新增管理端板块管理页面与后端接口（admin_board）
- 新增旧版数据导入：legacyimport 服务、导入面板、importusers 命令行工具
- 聊天用户卡片、板块图标等 UI 组件与界面优化
- 补充 about/公告/1Panel 部署等文档
- gitignore 排除 dist/ 构建产物与 .agents/ 本地工具目录

backend/service/setting.go

@@ -17,6 +17,8 @@ const (
 	SettingKeyAccent = "theme_accent"
 	// SettingKeyTrustReviewedPublish 已过审用户后续发帖/评论免审；缺行视为开启（默认开）
 	SettingKeyTrustReviewedPublish = "trust_reviewed_publish"
+	// SettingKeyPublishWithoutReview 全站免审：所有人发帖/评论直接公开，无需过审记录；缺行视为关闭（默认关）
+	SettingKeyPublishWithoutReview = "publish_without_review"
 	SettingKeySiteName             = "site_name"
 	SettingKeySiteDescription      = "site_description"
 	SettingKeyAllowRegister        = "allow_register"
@@ -99,6 +101,7 @@ var accentHexRe = regexp.MustCompile(`^#[0-9a-fA-F]{6}$`)
 type PublicSiteSettings struct {
 	Accent               string       `json:"accent"`
 	TrustReviewedPublish bool         `json:"trust_reviewed_publish"`
+	PublishWithoutReview bool         `json:"publish_without_review"`
 	SiteName             string       `json:"site_name"`
 	SiteDescription      string       `json:"site_description"`
 	AllowRegister        bool         `json:"allow_register"`
@@ -210,6 +213,7 @@ func (s *SettingService) Public() (PublicSiteSettings, error) {
 		SiteName:             DefaultSiteName,
 		SiteDescription:      DefaultSiteDescription,
 		TrustReviewedPublish: true,
+		PublishWithoutReview: false,
 		AllowRegister:        true,
 		AllowComments:        true,
 		CommentsRequireLogin: false,
@@ -247,6 +251,12 @@ func (s *SettingService) Public() (PublicSiteSettings, error) {
 	}
 	out.TrustReviewedPublish = trust
 
+	withoutReview, err := s.PublishWithoutReview()
+	if err != nil {
+		return out, err
+	}
+	out.PublishWithoutReview = withoutReview
+
 	name, found, err := s.getValue(SettingKeySiteName)
 	if err != nil {
 		return out, err
@@ -429,6 +439,20 @@ func (s *SettingService) SetTrustReviewedPublish(on bool) error {
 	return s.setBoolDefaultTrue(SettingKeyTrustReviewedPublish, on)
 }
 
+// PublishWithoutReview 全站免审：所有人发布内容直接公开（优先于过审免审）。缺行视为关闭。
+func (s *SettingService) PublishWithoutReview() (bool, error) {
+	v, found, err := s.getValue(SettingKeyPublishWithoutReview)
+	if err != nil {
+		return false, err
+	}
+	return parseBoolDefaultFalse(v, found), nil
+}
+
+// SetPublishWithoutReview 持久化全站免审开关；关闭时删键保持「缺行=默认关」。
+func (s *SettingService) SetPublishWithoutReview(on bool) error {
+	return s.setBoolDefaultFalse(SettingKeyPublishWithoutReview, on)
+}
+
 func (s *SettingService) SetSiteName(name string) error {
 	name = strings.TrimSpace(name)
 	if name == "" || name == DefaultSiteName {