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_modules/m_frontend/m_cron/chat-server/cfg.php

@@ -0,0 +1,14 @@
+<?php
+ini_set("error_reporting", E_ALL & ~E_STRICT & ~E_NOTICE & ~E_DEPRECATED);
+
+define('_ISVALID', true);
+
+/* database */
+$dbhost = getenv('DB_HOST') ?: 'db';
+$dbname = getenv('DB_NAME') ?: 'easystream';
+$dbuser = getenv('DB_USER') ?: 'easystream';
+$dbpass = getenv('DB_PASS') ?: 'easystream';
+/* main url */
+$base = getenv('CRON_BASE_URL') ?: 'http://localhost:8080';
+/* cron salt key */
+$ssk = getenv('CRON_SSK') ?: 'CHANGE_ME_IN_BACKEND';