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_modules/m_frontend/m_auth/signin.php

@@ -80,6 +80,11 @@ if (intval($_POST["frontend_global_submit"] == 1) and $cfg["frontend_signin_sect
 $remember  = ($cfg["login_remember"] == 1 and $cfg["frontend_signin_section"] == 1) ? VLoginRemember::checkLogin('frontend') : null;
 $logged_in = VLogin::isLoggedIn();
 
+// Assign config values to smarty template
+$smarty->assign('frontend_signin_section', $cfg["frontend_signin_section"]);
+$smarty->assign('login_remember', $cfg["login_remember"]);
+$smarty->assign('signin_captcha', intval($cfg["signin_captcha"] ?? 0));
+
 $class_smarty->displayPage('frontend', 'tpl_signin', $error_message, $notice_message);
 
 $_SESSION["USER_ERROR"] = null;