完善站点运营设置：分路由管理、登录可见评论、邮件模板内联与关闭注册 SSR。

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

backend/service/setting.go

@@ -22,6 +22,8 @@ const (
 	SettingKeyAllowRegister        = "allow_register"
 	// SettingKeyAllowComments 全站开放评论；缺行视为开启（默认开）
 	SettingKeyAllowComments = "allow_comments"
+	// SettingKeyCommentsRequireLogin 评论仅登录可见；缺行视为关闭（游客可读）
+	SettingKeyCommentsRequireLogin = "comments_require_login"
 	// SettingKeyAllowMessages 全站开放私聊/群聊；缺行视为开启（默认开）
 	SettingKeyAllowMessages     = "allow_messages"
 	SettingKeyPostCooldownHours = "post_cooldown_hours"
@@ -100,8 +102,9 @@ type PublicSiteSettings struct {
 	SiteName             string       `json:"site_name"`
 	SiteDescription      string       `json:"site_description"`
 	AllowRegister        bool         `json:"allow_register"`
-	AllowComments        bool         `json:"allow_comments"`
-	AllowMessages        bool         `json:"allow_messages"`
+	AllowComments          bool         `json:"allow_comments"`
+	CommentsRequireLogin   bool         `json:"comments_require_login"`
+	AllowMessages          bool         `json:"allow_messages"`
 	PostCooldownHours    int          `json:"post_cooldown_hours"`
 	CodeBlockAutoFold    bool         `json:"code_block_auto_fold"`
 	CodeBlockFoldLines   int          `json:"code_block_fold_lines"`
@@ -181,6 +184,26 @@ func (s *SettingService) setBoolDefaultTrue(key string, on bool) error {
 	return s.putValue(key, "false")
 }
 
+// 缺行视为关；仅显式 true/1/on/yes 为开。
+func parseBoolDefaultFalse(v string, found bool) bool {
+	if !found {
+		return false
+	}
+	switch strings.TrimSpace(strings.ToLower(v)) {
+	case "true", "1", "on", "yes":
+		return true
+	default:
+		return false
+	}
+}
+
+func (s *SettingService) setBoolDefaultFalse(key string, on bool) error {
+	if !on {
+		return s.deleteKey(key)
+	}
+	return s.putValue(key, "true")
+}
+
 // Public 返回解析后的公开站点设置（缺省已填默认值）
 func (s *SettingService) Public() (PublicSiteSettings, error) {
 	out := PublicSiteSettings{
@@ -189,6 +212,7 @@ func (s *SettingService) Public() (PublicSiteSettings, error) {
 		TrustReviewedPublish: true,
 		AllowRegister:        true,
 		AllowComments:        true,
+		CommentsRequireLogin: false,
 		AllowMessages:        true,
 		PostCooldownHours:    DefaultCooldownHours,
 		CodeBlockAutoFold:    true,
@@ -254,6 +278,12 @@ func (s *SettingService) Public() (PublicSiteSettings, error) {
 	}
 	out.AllowComments = comments
 
+	requireLogin, err := s.CommentsRequireLogin()
+	if err != nil {
+		return out, err
+	}
+	out.CommentsRequireLogin = requireLogin
+
 	messages, err := s.AllowMessages()
 	if err != nil {
 		return out, err
@@ -447,6 +477,20 @@ func (s *SettingService) SetAllowComments(on bool) error {
 	return s.setBoolDefaultTrue(SettingKeyAllowComments, on)
 }
 
+// CommentsRequireLogin 评论是否仅登录可见。缺行视为关闭。
+func (s *SettingService) CommentsRequireLogin() (bool, error) {
+	v, found, err := s.getValue(SettingKeyCommentsRequireLogin)
+	if err != nil {
+		return false, err
+	}
+	return parseBoolDefaultFalse(v, found), nil
+}
+
+// SetCommentsRequireLogin 持久化「登录可见评论」；关闭时删键保持「缺行=默认关」。
+func (s *SettingService) SetCommentsRequireLogin(on bool) error {
+	return s.setBoolDefaultFalse(SettingKeyCommentsRequireLogin, on)
+}
+
 // AllowMessages 是否允许全站私聊/群聊。缺行视为开启。
 func (s *SettingService) AllowMessages() (bool, error) {
 	v, found, err := s.getValue(SettingKeyAllowMessages)