Claude-Session: https://claude.ai/code/session_01JXneLTuvb5Gxim3DTN2tQa
Per the skill convention, document /spawn-session (purpose, usage, how it wraps claude-tmux, gotchas) and index it in MEMORY.md. Claude-Session: https://claude.ai/code/session_014oa7T7z1h5n34vu8vX9zGT