Meatballs in a rich ragu with homemade pasta

Name: Meatballs in a rich ragu with homemade pasta
Ingredients: 400g/14oz semolina flour, plus extra for rolling out; 5g/⅛oz fine salt; 4 medium free-range eggs, whisked; 1 tbsp olive oil; 600g/1lb 5oz whole beef shin on the bone; 6 tbsp olive oil; 3 carrots, peeled and chopped; 2 celery sticks, chopped; 2 sprigs fresh thyme, leaves removed and chopped; 2 sprigs fresh oregano, leaves removed and chopped; 800g/1lb 12oz cherry vine tomatoes, halved; 1 onion, chopped; 500ml/18fl oz passata; pinch caster sugar; 1 banana shallot, chopped; 110ml/3¾fl oz full-fat milk; 45g/1½oz porridge oats; 400g/14oz beef mince; 1 medium free-range egg, beaten; 50g/1¾oz gouda, grated; 1 lemon, zest only; salt and freshly ground black pepper; 2 tbsp fresh oregano leaves; 100g/3½oz gouda, grated