第 5 阶段：纠纷、通知与后台-2

backend/internal/model/admin_user.go

@@ -0,0 +1,18 @@
+package model
+
+import "time"
+
+type AdminUser struct {
+	ID           uint64     `gorm:"primaryKey" json:"id"`
+	Username     string     `gorm:"size:64;not null;uniqueIndex" json:"username"`
+	PasswordHash string     `gorm:"size:255;not null" json:"-"`
+	Nickname     string     `gorm:"size:64;not null;default:''" json:"nickname"`
+	Status       string     `gorm:"size:32;not null;default:'active'" json:"status"`
+	LastLoginAt  *time.Time `json:"last_login_at"`
+	CreatedAt    time.Time  `json:"created_at"`
+	UpdatedAt    time.Time  `json:"updated_at"`
+}
+
+func (AdminUser) TableName() string {
+	return "admin_users"
+}