1ec05ea289
Replace pause-on-idle with full server shutdown after IDLE_SHUTDOWN_SECONDS (default 5 minutes). Next visitor gets a fresh simulation instance. - Idle checker stops server and clears st.cache_resource - init_session_state detects stopped server and recreates fresh state - Clears instruments and history for clean restart Configurable via IDLE_SHUTDOWN_SECONDS environment variable. Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>