добавлен биллинг и тарифы

добавлена интеграция с юкасса

internal/domain/account/entity.go

@@ -65,7 +65,11 @@ type RMSServer struct {
 	RootGroupGUID  *uuid.UUID `gorm:"type:uuid" json:"root_group_guid"`
 	AutoProcess    bool       `gorm:"default:false" json:"auto_process"`
 
-	// Billing / Stats
+	// Billing
+	Balance   int        `gorm:"default:0" json:"balance"`
+	PaidUntil *time.Time `json:"paid_until"`
+
+	// Stats
 	InvoiceCount int `gorm:"default:0" json:"invoice_count"`
 
 	CreatedAt time.Time `json:"created_at"`
@@ -77,10 +81,12 @@ type Repository interface {
 	// Users
 	GetOrCreateUser(telegramID int64, username, first, last string) (*User, error)
 	GetUserByTelegramID(telegramID int64) (*User, error)
+	GetUserByID(id uuid.UUID) (*User, error)
 
 	// ConnectServer - Основной метод подключения.
-	// Реализует логику: Новый URL -> Owner, Старый URL -> Operator.
 	ConnectServer(userID uuid.UUID, url, login, encryptedPass, name string) (*RMSServer, error)
+	GetServerByURL(url string) (*RMSServer, error)
+	GetServerByID(id uuid.UUID) (*RMSServer, error)
 
 	SaveServerSettings(server *RMSServer) error
 
@@ -106,7 +112,10 @@ type Repository interface {
 	AddUserToServer(serverID, userID uuid.UUID, role Role) error
 	RemoveUserFromServer(serverID, userID uuid.UUID) error
 
+	// Billing & Stats
 	IncrementInvoiceCount(serverID uuid.UUID) error
+	UpdateBalance(serverID uuid.UUID, amountChange int, newPaidUntil *time.Time) error
+	DecrementBalance(serverID uuid.UUID) error
 
 	// Super Admin Functions
 	GetAllServersSystemWide() ([]RMSServer, error)