It would be a fair bet that not many people will remember what they were doing on the evening of August 22, 2023.  But, the country will have a firm grasp of the exploits of John Magnier over a two-hour window that evening at his Coolmore home when Richard Thomson-Moore and his wife Anna came to discuss a potential sale of the 751-acre Barne Estate in Co Tipperary.  The legal row over the enforceability of a handshake agreement mushroomed into blockbuster litigation – 19 days of headline-grabbing testimony in Court 29 of the Four Courts.  The much-awaited judgment in the…