feat: Users API, ownership transfer and removal of the legacy role string

internal/infrastructure/persistence/models/inviteModel.go

@@ -7,7 +7,8 @@ type Invite struct {
 	Email      string `gorm:"index;not null;size:255"`
 	HashedCode string `gorm:"not null"`
 	ExpiresAt  time.Time
-	InvitedBy  uint32 `gorm:"not null"`
+	InvitedBy  uint32  `gorm:"not null"`
+	RoleID     *uint32 `gorm:"index"`
 	AcceptedAt *time.Time
 	CreatedAt  time.Time `gorm:"autoCreateTime"`
 }

internal/infrastructure/persistence/models/migrationMarkerModel.go

@@ -0,0 +1,8 @@
+package models
+
+import "time"
+
+type MigrationMarker struct {
+	Name      string    `gorm:"primaryKey;size:64"`
+	AppliedAt time.Time `gorm:"not null"`
+}

internal/infrastructure/persistence/models/userModel.go

@@ -12,7 +12,6 @@ type User struct {
 	Email                   string  `gorm:"unique;not null;size:255"`
 	DisplayName             string  `gorm:"not null;default:'';size:255"`
 	IsVerified              bool    `gorm:"default=false;not null"`
-	Role                    string  `gorm:"not null;default:'';size:32"`
 	RoleID                  *uint32 `gorm:"index"`
 	VerificationCode        *string `gorm:"unique;size:255"`
 	VerificationExpiration  time.Time