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/types/content.ts

@@ -8,11 +8,12 @@ export interface TeamMember {
   name: string;
   role: string;
   image: string;
+  instagram?: string;
 }
 
 export interface ContactInfo {
   title: string;
-  address: string;
+  addresses: string[];
   phone: string;
   email: string;
   instagram: string;