Creates a new TelegramUpdateDispatcher bound to one chat and handler set.
HTTP client used to ack inline-keyboard callbacks.
Static dispatcher configuration (chat id, handlers, etc.).
Applies a batch of Telegram updates, returning the latest offset (one past the last update_id) so the caller can advance its poll cursor.
Parsed ITelegramApiResponse from a getUpdates call.
Procedure with the next offset (omitted when no updates).
Routes Telegram updates to text / photo / callback handlers.