chore(init): 初始化解忧商行项目并完成 Phase 0 基座

backend/internal/model/user.go

@@ -0,0 +1,34 @@
+package model
+
+import "time"
+
+type User struct {
+	ID                   uint64 `gorm:"primaryKey" json:"id"`
+	Phone                string `gorm:"size:32;not null;uniqueIndex" json:"phone"`
+	PasswordHash         string `gorm:"size:255;not null;default:''" json:"-"`
+	Nickname             string `gorm:"size:64;not null;default:''" json:"nickname"`
+	AvatarURL            string `gorm:"size:512;not null;default:''" json:"avatar_url"`
+	RealnameStatus       string `gorm:"size:32;not null;default:'unverified'" json:"realname_status"`
+	RiskStatus           string `gorm:"size:32;not null;default:'normal'" json:"risk_status"`
+	CreditScore          int    `gorm:"not null;default:100" json:"credit_score"`
+	DepositFreeQuotaCent int64  `gorm:"not null;default:0" json:"-"`
+	RenterGrowthPoints   int64  `gorm:"not null;default:0;index:idx_users_renter_growth_level,priority:2" json:"renter_growth_points"`
+	RenterGrowthLevel    string `gorm:"size:32;not null;default:'normal';index:idx_users_renter_growth_level,priority:1" json:"renter_growth_level"`
+	Status               string `gorm:"size:32;not null;default:'active'" json:"status"`
+	// 会话版本：递增后该用户已签发的全部令牌立即失效。
+	// 默认值对齐迁移 000052 的 users.token_version DEFAULT 0。
+	TokenVersion int64 `gorm:"not null;default:0" json:"-"`
+	// 注册归因：注册时由前端携带的推广短码。
+	RegisterTrackCode  string     `gorm:"size:64;index:idx_users_register_track_code" json:"register_track_code,omitempty"`
+	DistributionSiteID uint64     `gorm:"not null;default:0;index:idx_users_distribution_site_id" json:"distribution_site_id"` // 0=主站, >0=对应分销站点
+	InviteCode         *string    `gorm:"size:32;uniqueIndex:uk_users_invite_code" json:"invite_code,omitempty"`
+	InvitedByID        uint64     `gorm:"not null;default:0;index:idx_users_invited_by_id" json:"invited_by_id,omitempty"`
+	InviteVerifiedAt   *time.Time `json:"invite_verified_at,omitempty"`
+	LastLoginAt        *time.Time `json:"last_login_at"`
+	CreatedAt          time.Time  `json:"created_at"`
+	UpdatedAt          time.Time  `json:"updated_at"`
+}
+
+func (User) TableName() string {
+	return "users"
+}