feat: ummah2.falahos.my WordPress stack on Contabo + falah-shortcodes plugin

- docker-compose.yml: MariaDB 11 + WordPress 6.7 PHP8.3-FPM + Nginx
- nginx/default.conf: FastCGI pass, security headers, cache headers
- deploy.sh: one-command spin-up with WP-CLI install + plugin activation
- migrate-from-cpanel.sh: import cPanel backup (SQL/tar.gz/zip) with URL rewrite
- wordpress-plugins/falah-shortcodes: prayer times, dhikr, qibla, daily verse, nur/wallet/souq iframes
- wordpress-plugins/hermes-ai-bridge: REST API bridge with plugin install/activate endpoints

Migration path: cPanel → Contabo Docker (Imunify360 bypass)

ummah-wordpress/wordpress-config/php.ini

@@ -0,0 +1,10 @@
+memory_limit = 256M
+max_execution_time = 300
+upload_max_filesize = 64M
+post_max_size = 64M
+max_input_vars = 5000
+opcache.enable = 1
+opcache.memory_consumption = 128
+opcache.interned_strings_buffer = 8
+opcache.max_accelerated_files = 4000
+opcache.revalidate_freq = 60