$187 and 16 Hours: My First Million-Token Session

Two things landed in the same week: the 1 million token context window and the Claude Agentic Teams beta. One gave me room to think. The other gave me a way to parallelize. I did what any reasonable engineer would do: I immediately tried to break both with something too ambitious. The plan: build a complete cashback campaign web application — backend, frontend, full test suite, containerized deployment — in a single session. One orchestrator. Eight specialized agents spawned as a team. Don't sto