- Revert SSHService exec() back to original (remove PTY parameter)
- AgentService now writes installer to /tmp/ first, then runs via
script -q -c to create a PTY for sudo (handles requiretty)
- Falls back to direct sudo bash if script is unavailable
- Cleans up temp files after execution
- Added mkdir -p for /usr/local/bin in installer
- Added file verification and byte-count after writing agent binary
- Add database migration 006 for agent_key, agent_installed, agent_install_path, agent_last_seen_at columns
- Add Server model methods: findByAgentKey, generateAgentKey, regenerateAgentKey, updateAgentLastSeen, setAgentInstalled
- Auto-generate agent_key on server creation
- Create AgentService for SSH-based install/uninstall of remote agent
- Create bin/agent.sh - bash agent script for remote servers
- Create install/agent-install.sh and install/agent-uninstall.sh
- Create install/servermanager-agent.service systemd unit
- Add POST /api/metrics/push endpoint (auth via agent_key)
- Add web routes for agent install/uninstall/regenerate-key
- Add agent status section to server detail view with install/uninstall modals
- Make MonitoringService::saveMetrics() public for reuse