feat: BLACK HEART DANCE HOUSE landing page

Landing page with Hero, About, Team, Classes, and Contact sections.
Light/dark mode, scroll reveal animations, Yandex Maps, responsive design.
Next.js 16 + Tailwind v4 + TypeScript.

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

package.json

@@ -5,9 +5,11 @@
   "scripts": {
     "dev": "next dev",
     "build": "next build",
-    "start": "next start"
+    "start": "next start",
+    "lint": "next lint"
   },
   "dependencies": {
+    "lucide-react": "^0.576.0",
     "next": "16.1.6",
     "react": "19.2.3",
     "react-dom": "19.2.3"
@@ -17,6 +19,10 @@
     "@types/node": "^20",
     "@types/react": "^19",
     "@types/react-dom": "^19",
+    "eslint": "^9.39.3",
+    "eslint-config-next": "^16.1.6",
+    "eslint-config-prettier": "^10.1.8",
+    "prettier": "^3.8.1",
     "tailwindcss": "^4",
     "typescript": "^5"
   }