Initial commit: complete WebsiteBox project

Docker-based self-hosted WordPress deployment system with:
- Four-container stack (nginx, wordpress/php-fpm, mariadb, certbot)
- Automatic SSL via Let's Encrypt with self-signed fallback
- First-boot WordPress setup via WP-CLI (GeneratePress + child theme, plugins)
- Interactive setup wizard and one-line install script
- Backup, update, healthcheck, and SSL renewal scripts

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

nginx/wordpress.conf

@@ -0,0 +1,23 @@
+# HTTP server block — used during SSL bootstrap and for ACME challenges
+server {
+    listen 80;
+    server_name _;
+
+    # ACME challenge for Let's Encrypt
+    location /.well-known/acme-challenge/ {
+        root /var/www/certbot;
+    }
+
+    # Nginx healthcheck endpoint
+    location /nginx-health {
+        access_log off;
+        return 200 "healthy\n";
+        add_header Content-Type text/plain;
+    }
+
+    # Before SSL is acquired, serve a placeholder
+    location / {
+        root /usr/share/nginx/html;
+        try_files /setup-pending.html =404;
+    }
+}