feat: Add complete Docker deployment with web-based setup wizard

Major additions:
- Web-based setup wizard (setup.php, setup_wizard.php, setup-wizard.js)
- Production Docker configuration (docker-compose.prod.yml, .env.production)
- Database initialization SQL files (deploy/init_settings.sql)
- Template builder system with drag-and-drop UI
- Advanced features (OAuth, CDN, enhanced analytics, monetization)
- Comprehensive documentation (deployment guides, quick start, feature docs)
- Design system with accessibility and responsive layout
- Deployment automation scripts (deploy.ps1, generate-secrets.ps1)

Setup wizard allows customization of:
- Platform name and branding
- Domain configuration
- Membership tiers and pricing
- Admin credentials
- Feature toggles

Database includes 270+ tables for complete video streaming platform with
advanced features for analytics, moderation, template building, and monetization.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

f_core/f_classes/class.validation.php

@@ -17,7 +17,7 @@ defined('_ISVALID') or header('Location: /error');
 
 class VValidation
 {
-    public function checkEmailAddress($email)
+    public static function checkEmailAddress($email)
     {
         if (preg_match('/^([\w\!\#$\%\&\'\*\+\-\/\=\?\^\`{\|\}\~]+\.)*[\w\!\#$\%\&\'\*\+\-\/\=\?\^\`{\|\}\~]+@((((([a-z0-9]{1}[a-z0-9\-]{0,62}[a-z0-9]{1})|[a-z])\.)+[a-z]{2,6})|(\d{1,3}\.){3}\d{1,3}(\:\d{1,5})?)$/i', $email)) {
             return true;