feat: Scaffolding bot

internal/notifier/notifier.go

@@ -2,6 +2,8 @@ package notifier
 
 // Notifier defines the interface for sending notifications.
 type Notifier interface {
+	// Notify sends a message to a specific chat ID.
+	SendTo(chatID int64, message string) error
 	// Broadcast sends a message to a given list of chat IDs.
 	Broadcast(chatIDs []int64, message string) error
 }