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>

.gitignore

@@ -0,0 +1,23 @@
+# Environment and secrets
+.env
+.credentials
+
+# Persistent data (created by setup.sh)
+websitebox-data/
+
+# Migration state
+.websitebox-migrations
+
+# OS files
+.DS_Store
+Thumbs.db
+
+# Editor files
+*.swp
+*.swo
+*~
+.vscode/
+.idea/
+
+# Node (if any tooling added later)
+node_modules/