feat: Add comprehensive documentation suite and reorganize project structure

- Created complete documentation in docs/ directory
- Added PROJECT_OVERVIEW.md with feature highlights and getting started guide
- Added ARCHITECTURE.md with system design and technical details
- Added SECURITY.md with comprehensive security implementation guide
- Added DEVELOPMENT.md with development workflows and best practices
- Added DEPLOYMENT.md with production deployment instructions
- Added API.md with complete REST API documentation
- Added CONTRIBUTING.md with contribution guidelines
- Added CHANGELOG.md with version history and migration notes
- Reorganized all documentation files into docs/ directory for better organization
- Updated README.md with proper documentation links and quick navigation
- Enhanced project structure with professional documentation standards

f_core/config.php

@@ -0,0 +1,29 @@
+<?php
+// Main configuration file
+if (!defined("_VALID_ACCESS")) { exit("Direct access not allowed"); }
+
+// Include all configuration files
+require_once "config.define.php";
+require_once "config.cache.php";  
+require_once "config.set.php";
+require_once "config.href.php";
+require_once "config.folders.php";
+require_once "config.paging.php";
+require_once "config.footer.php";
+require_once "config.smarty.php";
+require_once "config.autoload.php";
+require_once "config.keys.php";
+require_once "config.logging.php";
+require_once "config.database.php";
+
+// Load core classes and functions
+require_once "f_classes/class_adodb/adodb.inc.php";
+require_once "f_classes/class_mobile/MobileDetect.php";
+require_once "f_functions/functions.general.php";
+require_once "f_functions/functions.security.php";
+require_once "f_functions/functions.queue.php";
+
+// Initialize system
+$cfg = array();
+$db = null;
+$smarty = null;