Add 18 new recipes and update index + lemon pasta

recipes/classic-banana-bread.json

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+{
+  "title": "Classic Banana Bread",
+  "tags": [
+    "Breakfast",
+    "Snack"
+  ],
+  "servings": "4",
+  "prepTime": "10 mins",
+  "cookTime": "60 mins",
+  "description": "The loaf that started a thousand arguments about whose recipe is better. Moist, dense, naturally sweet, and the best use of those sad black bananas sitting on your counter right now.",
+  "ingredients": [
+    "3 very ripe bananas",
+    "200g plain flour",
+    "80g butter, melted",
+    "150g brown sugar",
+    "2 eggs",
+    "1 teaspoon vanilla extract",
+    "1 teaspoon baking soda",
+    "1 teaspoon cinnamon",
+    "1 pinch salt",
+    "60g walnuts or chocolate chips (optional)"
+  ],
+  "instructions": [
+    "Preheat oven to 175°C / 350°F. Grease a standard loaf tin and line with parchment paper.",
+    "Peel bananas and mash in a large bowl until completely smooth.",
+    "Whisk in melted butter, brown sugar, eggs, and vanilla extract until combined.",
+    "Sprinkle in flour, baking soda, cinnamon, and salt. Fold gently until just combined — stop the moment you can't see dry flour. Fold in walnuts or chocolate chips if using.",
+    "Pour into the prepared loaf tin and bake for 55-65 minutes until a skewer inserted in the centre comes out clean.",
+    "Cool in the tin for 10 minutes, then turn out onto a wire rack. Slice only when fully cool."
+  ],
+  "id": "classic-banana-bread",
+  "updatedAt": "2026-03-12T10:00:00.000Z"
+}