For the crust: Position a rack in the center of the oven and preheat to 325 degrees F.
Toss together the cookie crumbs, butter, sugar and salt in a medium bowl. Press into the bottom and sides of a 9-inch deep-dish pie pan. Bake until dry and set, 15 to 18 minutes. Let cool completely on a wire rack.
For the filling: Combine the cornstarch and 1 1/4 cups of the sugar in a medium saucepan and very slowly whisk in the wine to prevent lumps from forming. Cook over medium heat, stirring constantly, until it has come to a simmer and is very thick, about 8 minutes. Remove from the heat and stir in the chocolate, butter and salt until smooth. Pour the filling into the cooled crust and refrigerate until chilled and set, about 4 hours and up to overnight.
Right before serving, whip the cream with the remaining 3 tablespoons sugar in a large bowl with an electric mixer until soft peaks form. Top the pie with the whipped cream. Scatter the chocolate curls or sprinkles over the top, if using.
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