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

deploy/cron/init.sh

@@ -0,0 +1,47 @@
+#!/bin/sh
+set -e
+
+# Write cron cfgs for chat-server and vod-server based on env
+CHAT_CFG="/srv/easystream/f_modules/m_frontend/m_cron/chat-server/cfg.php"
+VOD_CFG="/srv/easystream/f_modules/m_frontend/m_cron/vod-server/cfg.php"
+
+mkdir -p "$(dirname "$CHAT_CFG")" "$(dirname "$VOD_CFG")"
+
+cat > "$CHAT_CFG" <<'EOF'
+<?php
+ini_set("error_reporting", E_ALL & ~E_STRICT & ~E_NOTICE & ~E_DEPRECATED);
+
+define('_ISVALID', true);
+
+/* database */
+$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 */
+$ssk = getenv('CRON_SSK') ?: 'CHANGE_ME_IN_BACKEND';
+EOF
+
+cat > "$VOD_CFG" <<'EOF'
+<?php
+ini_set("error_reporting", E_ALL & ~E_STRICT & ~E_NOTICE & ~E_DEPRECATED);
+
+define('_ISVALID', true);
+
+/* path to recordings */
+$path = getenv('VOD_REC_PATH') ?: '/mnt/rec';
+/* main url */
+$base = getenv('CRON_BASE_URL') ?: 'http://localhost:8080';
+/* cron salt key */
+$ssk = getenv('CRON_SSK') ?: 'CHANGE_ME_IN_BACKEND';
+EOF
+
+# Ensure f_data is writable (best effort, may be a bind mount)
+chown -R 33:33 /srv/easystream/f_data 2>/dev/null || true
+chmod -R g+rwX /srv/easystream/f_data 2>/dev/null || true
+
+# Load crontab and start cron in foreground
+crontab /etc/cron.d/easystream
+cron -f