feat: refine portfolio content, contact, and supporting media

src/content/contact-email.ts

@@ -0,0 +1,9 @@
+import type { ContactContent } from './types';
+
+// The page carries separate parts; a complete address is assembled only when
+// someone interacts. This deters simple harvesting, not a determined crawler.
+export const contactAddress = (email: ContactContent['email']): string =>
+  `${email.localPart}@${email.domain}`;
+
+export const readableContactAddress = (email: ContactContent['email']): string =>
+  `${email.localPart} [at] ${email.domain.replaceAll('.', ' [dot] ')}`;