feat: 注册准则阅读控制 + Footer 合规信息

准则阅读（三层控制）：
- registration.show_guidelines — 弹窗/复选框模式
- registration.force_guidelines — 是否强制倒计时+滚动
- registration.guidelines_timer — 倒计时秒数

Footer 合规（8 字段，空值不显示，链接纯手写）：
- site.operator_name / site.icp_number / site.icp_license
- site.police_number / site.wenwangwen / site.algorithm_filing
- site.privacy_url / site.terms_url
- 新增 safeHTML 模板函数输出不转义 HTML

internal/common/helper.go

@@ -175,5 +175,32 @@ func injectSiteInfo(c *gin.Context, data gin.H) {
 	if copyrightStart, exists := c.Get("site_copyright_start"); exists {
 		data["CopyrightStart"] = copyrightStart
 	}
+	if operatorName, exists := c.Get("site_operator_name"); exists {
+		data["OperatorName"] = operatorName
+	}
+	if icpNumber, exists := c.Get("site_icp_number"); exists {
+		data["ICPNumber"] = icpNumber
+	}
+	if icpLicense, exists := c.Get("site_icp_license"); exists {
+		data["ICPLicense"] = icpLicense
+	}
+	if policeNumber, exists := c.Get("site_police_number"); exists {
+		data["PoliceNumber"] = policeNumber
+	}
+	if wenwangwen, exists := c.Get("site_wenwangwen"); exists {
+		data["WenWangWen"] = wenwangwen
+	}
+	if algorithmFiling, exists := c.Get("site_algorithm_filing"); exists {
+		data["AlgorithmFiling"] = algorithmFiling
+	}
+	if privacyURL, exists := c.Get("site_privacy_url"); exists {
+		data["PrivacyURL"] = privacyURL
+	}
+	if termsURL, exists := c.Get("site_terms_url"); exists {
+		data["TermsURL"] = termsURL
+	}
+	if guidelinesTimer, exists := c.Get("registration_guidelines_timer"); exists {
+		data["GuidelinesTimer"] = guidelinesTimer
+	}
 	data["CurrentYear"] = time.Now().Year()
 }

internal/config/site_settings.go

@@ -117,16 +117,32 @@ type SiteInfoDefaults struct {
 	ContactEmail   string // 联系/申诉邮箱，默认 "metazone@foxmail.com"
 	Framework      string // 附加标识，默认 "Framework: MetaGenesis"
 	CopyrightStart string // 版权起始年份，默认 "2024"
+	OperatorName   string // 运营主体
+	ICPNumber      string // ICP 备案（HTML，含链接）
+	ICPLicense     string // ICP 经营许可证（HTML）
+	PoliceNumber   string // 公安备案（HTML）
+	WenWangWen     string // 文网文（HTML）
+	AlgorithmFiling string // 算法备案（HTML）
+	PrivacyURL     string // 隐私政策（HTML）
+	TermsURL       string // 服务条款（HTML）
 }
 
 // SiteInfo 获取站点展示信息（优先 DB 设置，fallback 默认值）
 func (s *SiteSettings) SiteInfo() SiteInfoDefaults {
 	return SiteInfoDefaults{
-		SiteName:       s.Get("site.name", "MetaLab"),
-		SiteTagline:    s.Get("site.tagline", "下一代开发者社区"),
-		ContactEmail:   s.Get("site.contact_email", "metazone@foxmail.com"),
-		Framework:      s.Get("site.framework", "Framework: MetaGenesis"),
-		CopyrightStart: s.Get("site.copyright_start", "2024"),
+		SiteName:        s.Get("site.name", "MetaLab"),
+		SiteTagline:     s.Get("site.tagline", "下一代开发者社区"),
+		ContactEmail:    s.Get("site.contact_email", "metazone@foxmail.com"),
+		Framework:       s.Get("site.framework", "Framework: MetaGenesis"),
+		CopyrightStart:  s.Get("site.copyright_start", "2024"),
+		OperatorName:    s.Get("site.operator_name", ""),
+		ICPNumber:       s.Get("site.icp_number", ""),
+		ICPLicense:      s.Get("site.icp_license", ""),
+		PoliceNumber:    s.Get("site.police_number", ""),
+		WenWangWen:      s.Get("site.wenwangwen", ""),
+		AlgorithmFiling: s.Get("site.algorithm_filing", ""),
+		PrivacyURL:      s.Get("site.privacy_url", ""),
+		TermsURL:        s.Get("site.terms_url", ""),
 	}
 }
 
@@ -140,6 +156,26 @@ func (s *SiteSettings) IsRegistrationEnabled() bool {
 	return s.GetBool("registration.enabled", true)
 }
 
+// ShowGuidelinesModal 注册时是否弹窗显示社区准则
+func (s *SiteSettings) ShowGuidelinesModal() bool {
+	return s.GetBool("registration.show_guidelines", true)
+}
+
+// ForceGuidelines 是否强制阅读准则（需要倒计时+滚动到底部）
+func (s *SiteSettings) ForceGuidelines() bool {
+	return s.GetBool("registration.force_guidelines", true)
+}
+
+// GuidelinesTimer 强制阅读倒计时秒数
+func (s *SiteSettings) GuidelinesTimer() int {
+	val := s.Get("registration.guidelines_timer", "60")
+	n, err := strconv.Atoi(val)
+	if err != nil || n < 1 {
+		return 60
+	}
+	return n
+}
+
 // IsMaintenanceEnabled 是否处于维护模式（维护期间仅站长可登录和访问）
 func (s *SiteSettings) IsMaintenanceEnabled() bool {
 	return s.GetBool("maintenance.enabled", false)

internal/controller/auth_controller.go

@@ -57,6 +57,9 @@ func (ac *AuthController) RegisterPage(c *gin.Context) {
 		"ExtraCSS":            "/static/css/auth.css",
 		"Guidelines":          guidelines,
 		"RegistrationEnabled": ac.authService.IsRegistrationEnabled(),
+		"ShowGuidelinesModal": ac.siteSettings.ShowGuidelinesModal(),
+		"ForceGuidelines":     ac.siteSettings.ForceGuidelines(),
+		"GuidelinesTimer":     ac.siteSettings.GuidelinesTimer(),
 	}))
 }
 

internal/middleware/site_info.go

@@ -16,7 +16,16 @@ func InjectSiteInfo(siteSettings *config.SiteSettings) gin.HandlerFunc {
 		c.Set("site_contact_email", info.ContactEmail)
 		c.Set("site_framework", info.Framework)
 		c.Set("site_copyright_start", info.CopyrightStart)
+		c.Set("site_operator_name", info.OperatorName)
+		c.Set("site_icp_number", info.ICPNumber)
+		c.Set("site_icp_license", info.ICPLicense)
+		c.Set("site_police_number", info.PoliceNumber)
+		c.Set("site_wenwangwen", info.WenWangWen)
+		c.Set("site_algorithm_filing", info.AlgorithmFiling)
+		c.Set("site_privacy_url", info.PrivacyURL)
+		c.Set("site_terms_url", info.TermsURL)
 		c.Set("is_maintenance", siteSettings.IsMaintenanceEnabled())
+		c.Set("registration_guidelines_timer", siteSettings.GuidelinesTimer())
 		c.Next()
 	}
 }

internal/theme/loader.go

@@ -26,6 +26,7 @@ func LoadTemplates(roots ...TemplateRoot) (*template.Template, error) {
 		"formatCount": formatCount,
 		"str":         str,
 		"assetV":      common.AssetV,
+		"safeHTML":    func(s string) template.HTML { return template.HTML(s) },
 		"substr": func(s string, start, length int) string {
 			runes := []rune(s)
 			if start >= len(runes) {