Adapt a recipe for different servings, diets, or missing ingredients

Adapt this recipe for me. Original recipe: [PASTE THE FULL RECIPE, including amounts and pan size] Servings I need: [e.g. "halve it", "feed 12 instead of 4"] Changes needed: [e.g. "make it dairy-free", "gluten-free", "lower sugar", "no eggs", "I don't have buttermilk"] Equipment differences: [e.g. "only have a 9x13 pan", "air fryer instead of oven", "high altitude"] Rules: - Scale every amount and convert awkward quantities into practical measures (e.g. "1/3 egg" becomes "1 small egg" or "2 tbsp beaten egg"). - For baking, warn me when scaling or swapping could change texture or rise, and adjust pan size, bake time, and temperature with doneness checks rather than time alone. - For each substitution, give the swap, the ratio, and what will taste or feel different. - If a swap is risky for this recipe (e.g. removing eggs from a soufflé), say so and suggest a better recipe type instead. - If the change is for an allergy, remind me to check packaged-ingredient labels for hidden sources and cross-contact. Return: 1. The adapted recipe: ingredients table (original amount | new amount | notes) and rewritten steps. 2. A short "what to expect" note. 3. One backup option if I can't find a substitute.