Short answers, pulled from the story.
The Act of Mediation established the Swiss Confederation through a decree issued in 1803. Representatives gathered in Paris to end conflict on the 19th of February 1803 while Napoleon Bonaparte acted as mediator.
The document restored original thirteen members alongside six new additions for a total of nineteen cantons initially. Two new cantons named St Gallen and Graubünden had formerly been associates while four others consisted of subject lands conquered at different times including Aargau in 1415.
Louis d'Affry served as Landammann der Schweiz during the transition period until elections could be held. Local governments ran through seven-member commissions until new votes took place under this leadership structure.
Austrian forces crossed the border on the 21st of December 1813 supported by reactionary parties inside Switzerland. Pressure from Austria forced the Diet to abolish the 1803 constitution on the 29th of December that same year.
Deadlock persisted until the 12th of September when Valais Neuchâtel and Geneva gained full membership status. This expansion increased the number of cantons to twenty-two total members before the Congress of Vienna addressed broader European issues.