Implement core platform: auth, projects, machines, sessions, agent
Full-stack implementation of the Reckue Dev platform:
API: JWT auth, CRUD for users/projects/machines/workspaces/sessions,
WebSocket gateway for real-time agent communication.
Web: Login/register, dashboard with stats, project/machine/session
management pages, sidebar navigation, dark theme.
Agent: Rust WebSocket client with PTY terminal management, heartbeat,
reconnection logic, Socket.IO protocol support.
Deploy: Updated docker-compose and env configuration.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>