Update TypeScript version and enhance ContactForm and email handling

- Upgraded TypeScript dependency from 5.7.3 to 5.8.3 for improved type checking and features.
- Modified ContactForm component to include a hidden input for the domain, capturing the current hostname.
- Updated API contact handling to log and utilize the domain information in email notifications.
- Refactored email sending functions to conditionally include the domain in the sender's address for better context.

src/components/ContactForm.astro

@@ -1,5 +1,6 @@
 <form id="contact-form">
   <input type="hidden" name="csrf_token" id="csrf_token" />
+  <input type="hidden" name="domain" id="domain" />
   <label for="email">Email</label>
   <input type="email" name="email" id="email" required aria-describedby="email-help" />
   <div id="email-help" class="sr-only">Enter your email address</div>
@@ -43,7 +44,17 @@ async function fetchCsrfToken() {
   }
 }
 
-document.addEventListener('DOMContentLoaded', fetchCsrfToken);
+function setDomainHiddenField() {
+  const domainInput = document.getElementById('domain');
+  if (domainInput) {
+    (domainInput as HTMLInputElement).value = window.location.hostname;
+  }
+}
+
+document.addEventListener('DOMContentLoaded', () => {
+  fetchCsrfToken();
+  setDomainHiddenField();
+});
 
 const contactForm = document.getElementById('contact-form');
 const feedbackDiv = document.getElementById('form-feedback');