Add 18 new recipes and update index + lemon pasta

recipes/classic-roast-chicken.json

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+{
+  "title": "Classic Roast Chicken",
+  "tags": [
+    "Dinner"
+  ],
+  "servings": "4",
+  "prepTime": "15 mins",
+  "cookTime": "1 hr 20 mins",
+  "description": "The crown jewel of Sunday dinners. Crispy golden skin, juicy meat, and drippings that make the whole house smell incredible. Master her and you master everything.",
+  "ingredients": [
+    "1 whole chicken (approx 1.5kg)",
+    "60g butter, softened",
+    "4 garlic cloves, minced",
+    "4 sprigs fresh thyme",
+    "2 sprigs fresh rosemary",
+    "1 lemon",
+    "2 tablespoons olive oil",
+    "Salt and black pepper to taste"
+  ],
+  "instructions": [
+    "Take chicken out of the fridge 30 minutes before cooking. Preheat oven to 200°C / 400°F. Pat the chicken completely dry with paper towels.",
+    "Mix softened butter with garlic, thyme and rosemary leaves, lemon zest, salt and pepper.",
+    "Gently loosen the skin over the breast and push butter rub underneath. Rub remaining butter all over the outside. Drizzle with olive oil and season generously.",
+    "Stuff the cavity with the halved lemon and remaining herb sprigs. Tie the legs together with kitchen twine.",
+    "Place breast-side up in a roasting tin. Roast for 20 minutes per 500g plus an extra 20 minutes, basting with pan juices halfway through.",
+    "Pierce the thickest part of the thigh — juices should run completely clear and internal temperature should reach 75°C / 165°F.",
+    "Cover loosely with foil and rest for 15-20 minutes before carving."
+  ],
+  "id": "classic-roast-chicken",
+  "updatedAt": "2026-03-12T10:00:00.000Z"
+}