feat: add real content from Notion page

Fill in team members, classes, contact info, and Yandex Maps with
actual data from the BLACK HEART DANCE HOUSE Notion page.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/components/sections/Contact.tsx

@@ -14,10 +14,12 @@ export function Contact() {
           <SectionHeading>{contact.title}</SectionHeading>
 
           <div className="mt-12 space-y-6">
-            <div className="contact-item">
-              <MapPin size={20} className="contact-icon" />
-              <p className="body-text">{contact.address}</p>
-            </div>
+            {contact.addresses.map((address, i) => (
+              <div key={i} className="contact-item">
+                <MapPin size={20} className="contact-icon" />
+                <p className="body-text">{address}</p>
+              </div>
+            ))}
 
             <div className="contact-item">
               <Phone size={20} className="contact-icon" />