feat: 登录管理设备列表显示会话类型和剩余有效期

- 临时会话显示橙色'临时会话'徽章
- 非当前设备显示剩余有效时间（临时/长期均显示）
- 当前设备不显示剩余时间（持续续期，显示无意义）
- 新增 formatTTL 模板函数，分钟数转人类可读格式
- sessionConfig 接口增加 GetRememberTimeout 方法

internal/config/config.go

@@ -129,6 +129,16 @@ func bindEnvOverride(v *viper.Viper) {
 	_ = v.BindEnv("database.password", "DATABASE_PASSWORD")
 }
 
+// GetIdleTimeout 返回临时会话空闲超时（分钟），实现 controller.sessionConfig 接口
+func (c *Config) GetIdleTimeout() int {
+	return c.Session.IdleTimeout
+}
+
+// GetRememberTimeout 返回记住我会话空闲超时（分钟）
+func (c *Config) GetRememberTimeout() int {
+	return c.Session.RememberTimeout
+}
+
 // DSN 返回 PostgreSQL 连接字符串
 func (d DatabaseConfig) DSN() string {
 	return "host=" + d.Host +

internal/controller/settings_controller.go

@@ -3,6 +3,7 @@ package controller
 import (
 	"io"
 	"net/http"
+	"time"
 
 	"metazone.cc/metalab/internal/common"
 	"metazone.cc/metalab/internal/model"
@@ -33,17 +34,24 @@ type auditSubmittable interface {
 	GetPendingTypes(userID uint) ([]string, error)
 }
 
+// sessionConfig 登录管理对配置的最小依赖（ISP：2 个方法）
+type sessionConfig interface {
+	GetIdleTimeout() int     // 分钟
+	GetRememberTimeout() int // 分钟
+}
+
 // SettingsController 个人设置控制器
 type SettingsController struct {
 	authService   profileProvider
 	avatarService avatarProvider
 	auditService  auditSubmittable
 	sessionMgr    sessionManager
+	sessionCfg    sessionConfig
 }
 
 // NewSettingsController 构造函数
-func NewSettingsController(authService profileProvider, avatarService avatarProvider, auditService auditSubmittable, sessionMgr sessionManager) *SettingsController {
+func NewSettingsController(authService profileProvider, avatarService avatarProvider, auditService auditSubmittable, sessionMgr sessionManager, sessionCfg sessionConfig) *SettingsController {
-	return &SettingsController{authService: authService, avatarService: avatarService, auditService: auditService, sessionMgr: sessionMgr}
+	return &SettingsController{authService: authService, avatarService: avatarService, auditService: auditService, sessionMgr: sessionMgr, sessionCfg: sessionCfg}
 }
 
 // SettingsPage 个人设置页面（需登录）
@@ -94,13 +102,24 @@ func (sc *SettingsController) SettingsPage(c *gin.Context) {
 			*session.Session
 			DeviceInfo session.DeviceInfo
 			IsCurrent  bool
+			TTLMinutes int // 剩余有效分钟数（仅非当前设备显示）
 		}
 		var views []sessionView
 		for _, s := range sessions {
+			timeout := sc.sessionCfg.GetIdleTimeout() // 临时会话超时（分钟）
+			if s.RememberMe {
+				timeout = sc.sessionCfg.GetRememberTimeout() // 记住我超时（分钟）
+			}
+			elapsed := int(time.Since(s.LastAccess).Minutes())
+			ttl := timeout - elapsed
+			if ttl < 0 {
+				ttl = 0
+			}
 			views = append(views, sessionView{
 				Session:    s,
 				DeviceInfo: session.ParseUA(s.UserAgent),
 				IsCurrent:  s.ID == currentSID,
+				TTLMinutes: ttl,
 			})
 		}
 		data["Sessions"] = views

internal/router/deps_extra.go

@@ -22,7 +22,7 @@ func buildDeps(db *gorm.DB, cfg *config.Config, siteSettings *config.SiteSetting
 
 	messageController := controller.NewMessageController(notificationService)
 
-	settingsCtrl := controller.NewSettingsController(authService, avatarSvc, auditService, sessionMgr)
+	settingsCtrl := controller.NewSettingsController(authService, avatarSvc, auditService, sessionMgr, cfg)
 	siteSettingController := adminCtrl.NewSiteSettingController(
 		service.NewSiteSettingService(siteSettings),
 		&service.AuditDefaults{

internal/theme/loader.go

@@ -1,6 +1,7 @@
 package theme
 
 import (
+	"fmt"
 	"html/template"
 	"os"
 	"path/filepath"
@@ -19,6 +20,7 @@ func LoadTemplates(roots ...TemplateRoot) (*template.Template, error) {
 	funcMap := template.FuncMap{
 		"add":        func(a, b int) int { return a + b },
 		"subtract":   func(a, b int) int { return a - b },
+		"formatTTL": formatTTL,
 	}
 	t := template.New("").Funcs(funcMap)
 	for _, root := range roots {
@@ -55,3 +57,23 @@ func LoadContent(path string) (template.HTML, error) {
 	}
 	return template.HTML(content), nil
 }
+
+// formatTTL 将剩余分钟数格式化为人类可读的时间（如 "23 小时"、"3 天"、"15 分钟"）
+func formatTTL(minutes int) string {
+	if minutes <= 0 {
+		return "即将过期"
+	}
+	if minutes < 60 {
+		return fmt.Sprintf("%d 分钟", minutes)
+	}
+	hours := minutes / 60
+	if hours < 24 {
+		return fmt.Sprintf("%d 小时", hours)
+	}
+	days := hours / 24
+	remainHours := hours % 24
+	if remainHours == 0 {
+		return fmt.Sprintf("%d 天", days)
+	}
+	return fmt.Sprintf("%d 天 %d 小时", days, remainHours)
+}

templates/MetaLab-2026/html/settings/index.html

@@ -118,11 +118,13 @@
                                 <span class="session-browser">{{.DeviceInfo.Browser}}</span>
                                 <span class="session-os">/ {{.DeviceInfo.OS}}</span>
                                 {{if .IsCurrent}}<span class="session-badge">当前设备</span>{{end}}
+                                {{if not .RememberMe}}<span class="session-badge session-badge-temp">临时会话</span>{{end}}
                             </div>
                             <div class="session-meta">
                                 <span class="session-ip">IP: {{.IP}}</span>
                                 <span class="session-time">登录于 {{.CreatedAt.Format "2006-01-02 15:04"}}</span>
                                 <span class="session-time">最后活动 {{.LastAccess.Format "2006-01-02 15:04"}}</span>
+                                {{if not .IsCurrent}}<span class="session-ttl">剩余约 {{formatTTL .TTLMinutes}}</span>{{end}}
                             </div>
                             <div class="session-remark-row">
                                 <input type="text" class="session-remark-input" value="{{.Remark}}" placeholder="添加备注（如 我的笔记本）" maxlength="32" data-sid="{{.ID}}" data-current="{{.IsCurrent}}">

templates/MetaLab-2026/static/css/settings.css

@@ -649,6 +649,17 @@ body {
     margin-left: .2rem;
 }
 
+.session-badge.session-badge-temp {
+    background: #fff3e0;
+    color: #e65100;
+}
+
+.session-ttl {
+    color: #e65100;
+    font-size: .78rem;
+    font-weight: 500;
+}
+
 .session-meta {
     display: flex;
     gap: .8rem;