fix(RECIPE-0008): complete iteration 1 — resolve all TypeScript strict mode errors

src/routes/api/tandoor/+server.ts

@@ -1,7 +1,8 @@
 import { json } from '@sveltejs/kit';
+import type { RequestHandler } from './$types';
 import { uploadRecipeWithIngredientsDTO, uploadRecipeImage } from '$lib/server/tandoor';
 
-export async function POST({ request }) {
+export const POST: RequestHandler = async ({ request }) => {
 	const { recipe } = await request.json();
 
 	if (!recipe) {