Init Slavic Pulse frontend for slavic-pulse.com domain.

Adapt branding, SEO meta tags, assets, Docker dev on port 8082, and Dokploy
example pointing to site-slavic-pulse-com Gitea repository.

Co-authored-by: Cursor <cursoragent@cursor.com>

.env.example

@@ -1,8 +1,8 @@
-# Agencja AI — Environment Configuration (Local Development)
+# Slavic Pulse — Environment Configuration (Local Development)
 # Copy to .env and fill in your values.
 # Never commit .env with real credentials to version control.
 
 # --- Frontend Server ---
 # Port na hoście (localhost). W kontenerze nginx zawsze nasłuchuje na 80.
 # Mapowanie w docker-compose.yml: ${FRONTEND_PORT}:80
-FRONTEND_PORT=8080
+FRONTEND_PORT=8082