Short answers, pulled from the story.
The Treaty of Edinburgh began on the 17th of June 1560 with two cannon shots fired from Edinburgh Castle at seven o'clock in the evening. This auditory signal marked the cessation of hostilities during delicate negotiations and the end of the siege of Leith.
Jean de Monluc, the Bishop of Valence, and Charles de la Rochefoucault, Sieur de Randan, represented King Francis II during the negotiations. They were matched by English commissioners William Cecil and Nicholas Wotton, the Dean of Canterbury and York, who spoke for Queen Elizabeth I.
Mary Queen of Scots never ratified the Treaty of Edinburgh because she viewed the Lords of the Congregation as rebels against her mother, Mary of Guise. The treaty terms required her to acknowledge Elizabeth as the monarch of England, which directly contradicted her claim to the English throne.
The Treaty of Edinburgh was concluded on the 6th of July 1560, just short of a month after the death of Mary of Guise. This date marked the formal end of the Auld Alliance and the withdrawal of French troops from Scotland.
The fortifications at Leith, Inchkeith, and Dunbar Castle were eventually dismantled following the Treaty of Edinburgh. The French garrisons were ordered to leave Scottish soil, effectively ending the military phase of the Reformation Crisis.