Preheat oven to 350°F (175°C) and grease a 9-inch springform pan.; In a food processor, blend oats, dates, melted butter, cinnamon, and salt until crumbly but sticky.; Press the mixture firmly into the bottom of the pan. Bake for 10 minutes, then set aside to cool.
In a large bowl, beat together labneh, cream cheese, honey, and cornstarch until smooth.; Add eggs, lemon zest, lemon juice, and vanilla extract, mixing until just combined (avoid overmixing to prevent cracks).; Pour the filling over the cooled crust and smooth the top.
Bake for 40-45 minutes, or until the edges are set but the center has a slight jiggle.; Turn off the oven and let the cheesecake cool inside for 30 minutes before transferring to the fridge.; Chill for at least 4 hours, preferably overnight, for the best texture.
In a small pan over low heat, warm the honey and orange blossom water (if using) for 1-2 minutes.; Stir in the chopped pistachios and a pinch of sea salt, coating evenly.; Remove from heat and let cool slightly before spooning over the chilled cheesecake.
Carefully remove the cheesecake from the springform pan and transfer to a serving platter.; Drizzle extra honey on top and garnish with lemon zest or dried rose petals.; Slice and serve chilled for the ultimate creamy, tangy bite.