Edition 12.1 — The cockpit edition. Every chapter so far has been about what the agents do; this page is about the two square meters in front of the human. Run 6–8 Claude Code sessions in parallel and the bottleneck stops being the model — it's you, alt-tabbing through identical black rectangles, typing into the wrong one. Fleet paint is the fix: a statusline that names every session, OSC escape codes that recolor each window by project, and a launchd watcher that keeps the whole fleet painted automatically — one palette file that both the window and the badge read, so they can never disagree. Built by Claude Code across two evenings, including the one where it disassembled the terminal to check which escape codes actually work, and the second one — "harden it, no silent failures" — that turned a demo into infrastructure.

The cockpit edition. Every chapter so far has been about what the agents do; this page is about the two square meters in front of the human. Run 6–8 Claude Code sessions in parallel and the bottleneck stops being the model — it's you, alt-tabbing through identical black rectangles, typing into the wrong one. Fleet paint is the fix: a statusline that names every session, OSC escape codes that…