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_backend/template_manager.php

@@ -0,0 +1,112 @@
+<?php
+/**
+ * Template Builder Management - Admin Interface
+ * Allows users to manage their custom templates
+ */
+
+// Include core
+require_once dirname(__FILE__) . '/../../f_core/config.core.php';
+
+// Check if user is logged in
+if (!isset($_SESSION['USER_ID']) || $_SESSION['USER_ID'] <= 0) {
+    header('Location: /signin.php');
+    exit;
+}
+
+// Initialize template builder
+require_once $cfg['classes_dir'] . '/class.templatebuilder.php';
+$templateBuilder = new VTemplateBuilder();
+
+// Handle actions
+$action = isset($_GET['action']) ? $_GET['action'] : 'list';
+$message = '';
+$messageType = '';
+
+switch ($action) {
+    case 'new':
+        // Show builder for new template
+        showBuilder(0, $templateBuilder);
+        exit;
+
+    case 'edit':
+        // Show builder for existing template
+        $templateId = isset($_GET['id']) ? (int)$_GET['id'] : 0;
+        showBuilder($templateId, $templateBuilder);
+        exit;
+
+    case 'delete':
+        $templateId = isset($_GET['id']) ? (int)$_GET['id'] : 0;
+        $result = $templateBuilder->deleteTemplate($templateId);
+        if ($result['success']) {
+            $message = 'Template deleted successfully';
+            $messageType = 'success';
+        } else {
+            $message = $result['error'];
+            $messageType = 'error';
+        }
+        break;
+
+    case 'duplicate':
+        $templateId = isset($_GET['id']) ? (int)$_GET['id'] : 0;
+        $result = $templateBuilder->duplicateTemplate($templateId);
+        if ($result['success']) {
+            $message = 'Template duplicated successfully';
+            $messageType = 'success';
+        } else {
+            $message = $result['error'];
+            $messageType = 'error';
+        }
+        break;
+
+    case 'toggle_active':
+        $templateId = isset($_GET['id']) ? (int)$_GET['id'] : 0;
+        $isActive = isset($_GET['is_active']) ? (int)$_GET['is_active'] : 0;
+        $result = $templateBuilder->updateTemplate($templateId, ['is_active' => $isActive]);
+        if ($result['success']) {
+            $message = 'Template ' . ($isActive ? 'activated' : 'deactivated') . ' successfully';
+            $messageType = 'success';
+        } else {
+            $message = $result['error'];
+            $messageType = 'error';
+        }
+        break;
+}
+
+// Get all templates
+$templates = $templateBuilder->getUserTemplates();
+$userPrefs = $templateBuilder->getUserPreferences();
+
+// Assign to Smarty
+$smarty->assign('templates', $templates);
+$smarty->assign('user_prefs', $userPrefs);
+$smarty->assign('message', $message);
+$smarty->assign('message_type', $messageType);
+
+// Display page
+echo $smarty->fetch('tpl_backend/tpl_template_manager.tpl');
+
+/**
+ * Show template builder interface
+ */
+function showBuilder($templateId, $templateBuilder)
+{
+    global $smarty, $cfg;
+
+    $template = null;
+    $templateJson = '{}';
+
+    if ($templateId > 0) {
+        $template = $templateBuilder->getTemplate($templateId);
+        if (!$template) {
+            header('Location: /account.php?s=templates&error=not_found');
+            exit;
+        }
+        $templateJson = json_encode($template);
+    }
+
+    $smarty->assign('template', $template);
+    $smarty->assign('template_json', $templateJson);
+    $smarty->assign('page_title', $templateId > 0 ? 'Edit Template' : 'New Template');
+
+    echo $smarty->fetch('tpl_frontend/tpl_builder/tpl_builder_main.tpl');
+}