Checkout: forward only the checkout fields, show clear errors, fix the contact form (#16)

Co-authored-by: Michael Czechowski <mail@librete.ch>

nuxt.config.ts

@@ -29,6 +29,7 @@ export default defineNuxtConfig({
 		// Server-only (private) - never exposed to client
 		shopApiToken: "", // NUXT_SHOP_API_TOKEN
 		cmsInternalUrl: "http://cms:5555", // NUXT_CMS_INTERNAL_URL - internal docker network URL
+		mailApiUrl: "http://mail:2222", // NUXT_MAIL_API_URL - mail service (libreshop/mail) on the internal docker network
 		siteUrl: "https://muellerprints-paperwork.com", // NUXT_SITE_URL - for sitemap
 
 		// Public (client + server)
@@ -72,7 +73,11 @@ export default defineNuxtConfig({
 
 	// TypeScript
 	typescript: {
-		strict: true
+		strict: true,
+		// The unit tests run on Node (npm test), not in the app: keep them out of the app's type check (.nuxt/tsconfig.app.json).
+		tsConfig: {
+			exclude: ["../tests/**/*"]
+		}
 	},
 
 	// Tailwind