When nothing listens on the address, the error now adds: start it with `solvecraft --control PORT` (or SOLVECRAFT_CONTROL_PORT=PORT) and retry. Co-Authored-By: Claude Opus 5.5 <[email protected]> Claude-Session: https://claude.ai/code/session_01RjGw4gA5ZvKrU8MQP6sBgT